bs2

Document Sample
bs2 Powered By Docstoc
					                                                            Derived
 Critical / Info needed:                                    from No:




                           general considerations


Brief description:                  Name of the solution:

                                    Drawing No:

                                    Creator:

                                    Date:
                                                                                    Derived
 Critical / Info needed:                                                            from No:




Brief description:                                          Name of the solution:
  New chapter only looking for complete mass balance
                                                            Drawing No: 0.1
  All rotary motions are balanced with counterweights on
  the crankshaft!
                                                            Creator:
  This chapter only discusses oscillatory mass balance of
  1st and 2nd order
                                                            Date:
                                                                                                                                                                                                                                                                                                      Derived
 Critical / Info needed:      Functional                                                                                                                                                                                                                                                              from No:

                            decomposition                                                                                                                                Mass balance
                            (morphological
                              principal)              Support 1st order                                                                                                            Support 2nd order




                                                                                                                                                                                        Support position of mass balance
                                                          Support position of mass balance




                                                                                                                                                                                                                                                Support motion of mass balance
                                                                                                                   Support motion of mass balance
                                                                                              Transmit from what




                                                                                                                                                                                                                           Transmit from what
                                                                                                                                                    Transmit with what




                                                                                                                                                                                                                                                                                 Transmit with what
Brief description:                                                                           Name of the solution:

      This is just are very simple decomposition to                                          Drawing No: 0.2
           come up with different possibilities
                                                                                             Creator:

                                                                                             Date:
                                                                             Derived
 Critical / Info needed:                                                     from No:

                                                Mass balance
                                 principals to produce mass forces


                           • rotating mass (shaft)
                           • oscillating mass (linear moving mass)




Brief description:                                   Name of the solution:

                                                     Drawing No: 0.3

                                                     Creator:

                                                     Date:
                                                                         Derived
 Critical / Info needed:          Function: Position First Order         from No:


                               In this case: constraint: using shafts!
      Opposite
        forces
    always have            1
    to be on one
          line
      otherwise
       they will
       initiate a
       moment                                                       3
                           2




                                                                     4



Brief description:                    Name of the solution:

                                      Drawing No: 0.3

                                      Creator:

                                      Date:
                                                                             Derived
 Critical / Info needed:        Function: Position Second Order              from No:


                               In this case: constraint: using shafts!


                           1            Mass
                                      balancing
                                        shaft
                               crankshaft

                                                                     3

                           2




                                                                         4



Brief description:                    Name of the solution:

                                      Drawing No: 0.4

                                      Creator:

                                      Date:
                                                                                                                Derived
 Critical / Info needed:       Vertical forces cancelled by weight on                See next slide for our     from No:
                           crankshaft and horizontal forces created by that
                              weight canceled by the other two shafts?             interpretation of design B


•this is only a general
consideration about
where to place the
additional masses;
•in our understanding
B would be much
better because we
have only two
additional masses (2 x
mosc /2)




Brief description:                                                     Name of the solution:

                                                                       Drawing No: 0.5

                                                                      Creator:

                                                                       Date:
                                                                                                                Derived
  Critical / Info needed:                                                                                       from No:


                                Mass balance of the oscillating forces on the crankshaft with an additional shaft to
                                balance horizontal forces

       2nd order?
                             Unwanted horizontal component
  We can combine this
solution with another for                                                               More mass to balance vertical
       2nd order.                                                                            oscillating forces
 Please explain how
  this could work?


                                                             Wanted vertical component of the centrifugal force

                            Solution: additional shafts                               Shafts rotating counterclockwise, to
                                                                                         compensate horizontal forces.
                                                                                        Additional vertical forces will be
                                                                                      eliminated by the shafts themselves
                                                                                       (rotating with different direction).

Brief description:                                              Name of the solution:    Make it complicated

   The difference would be not to balance the vertical          Drawing No:
                                                                              0.5.1
   forces with the extra shaft. The background is that you
   may vary the counterweight on the crankshaft for each       Creator: USA
   test without disassembling the whole mass balance
                                                                Date: 2/7/00
                                                                                         Derived
 Critical / Info needed:   shaft 2 should                        Fv1       F1            from No:

                           be up here to
                            eliminate the
  It looked like the           moment                        1             Fh1   Fv2
   way you had B
drawn that you were
creating a horizontal
force to the right. Is                                                           Fv1
    that what you
 intended or is this
  drawing correct?                                                        Fh2      Fh1
                                              F2             Fv2

                                                                                         F=0
                                                                                  -Fc+Fv1+Fv2=0
                                            Fh2
                                                                                      -Fh2+Fh1=0
                                                                  2

                                  Fc                                             Fc

Brief description:                                Name of the solution:

                                                  Drawing No: 0.5.2

                                                  Creator:

                                                  Date:
                                                                                   Derived
 Critical / Info needed:                                                           from No:
                           Support motion of mass balance (1st order)
                           Function: Transmit from what

                             • 1 use motion of crankshaft
                             • 2 use motion of camshaft
                             • 3 use external device
                                        • 3.1 hydraulics
                                        • 3.2 electrical engine
                                        • 3.3 pneumatics
                                        • 3.4 electrical field forces
                                        • 3.5 magnetic field forces
                             • 4 use motion of 2nd order balancing system




Brief description:                                         Name of the solution:

                                                           Drawing No: 0.6

                                                           Creator:

                                                           Date:
                                                                                  Derived
 Critical / Info needed:                                                          from No:
                           Support motion of mass balance (2nd order)
                            Function: Transmit from what

                             • use motion of crankshaft
                             • use motion of camshaft
                             • use external device
                                        • hydraulics
                                        • electrical engine
                                        • pneumatics
                                        • electrical field forces
                                        • magnetic field forces
                             • use motion of 1st order balancing system




Brief description:                                        Name of the solution:

                                                          Drawing No: 0.7

                                                          Creator:

                                                          Date:
                                                                                                    Derived
 Critical / Info needed:                                                                            from No:
                           Transmit with what (solutions for both orders!)

                            • direct (positive connection(=Formschluß? formfit)) Some kind of part lock)
                                   • chain
                                   • gear
                                   • rods
                                   • belt
                                   • excenter
                            • friction
                                   • wheel
                                   • belt
                                   • fluid friction
                                            • oil circuit with two pumps


Brief description:                                           Name of the solution:

                                                             Drawing No: 0.8

                                                             Creator:

                                                              Date:
                                                                                      Derived
 Critical / Info needed:                                                              from No:



                                                  Oscillating Forces
                                                  •1st order: produced by acceleration/retardation
                                                  of piston and con-rod in vertical direction
                                                  (direction of cylinder-liner)
                                                  •2nd order:produced by acceleration/retardation
                                                  of con-rod in horizontal direction; dependent on
                           F2nd order             double crankshaft-speed because of
                                                  mathematical model
                           F1st order

                                                         In our opinion, these
                                                          are rotating forces.
                                                         Oscillating forces are
                                                             always in one
                                                          direction (vertical in
                                                               this case).

Brief description:           F1st order   Name of the solution:

                                          Drawing No: 0.9
                           F2nd order
                                          Creator:

                                          Date:
                                                               Derived
 Critical / Info needed:                                       from No:




                               Brainstormed solutions
                           (based on systematic approach!)



Brief description:                     Name of the solution:

                                       Drawing No:

                                       Creator:

                                       Date:
                                                                    Derived
 Critical / Info needed:                                            from No:

   • Decreases only
  natural frequencies
 (Mass forces remain
      the same)




Brief description:         Name of the solution:    S-Class-block

                           Drawing No:        1.1

                           Creator:   Team Darmstadt

                           Date:   02/03/00
                                                                 Derived
 Critical / Info needed:                                         from No:


 •Not avoiding only
 reducing mass forces




                                                       dampers


Brief description:         Name of the solution:    Dampers

                           Drawing No:        1.2

                           Creator:   Team Darmstadt

                           Date:   02/03/00
                                                                        Derived
 Critical / Info needed:                                                from No:

  •Only for oscillating
  forces
  •rotating forces have
  to be compenstaed by
  counterweights
  •yes, thats absolutely
  right; just one thing:
  I don‘t want to use
  the camshaft which is
  already in an engine,
  it ment to be
  additional one
 Does the camshaft
  induce a vibration
                                                     Is this the whole engine
 equal and opposite
                                                    or only part of the engine
    to the engine
 vibration to cancel
        it out?

Brief description:         Name of the solution:        camshaft 2000

                           Drawing No:        1.3

                           Creator:   Team Munich

                           Date:   02/08/00
                                                                           Derived
 Critical / Info needed:                                                   from No:



 •Only for oscillating
                                                Different strokes for different folks!
 forces
 •rotating forces have
 to be compenstaed by
 counterweights                                       General Question: Is it ok to
                                                      balance the vibrations of the
                                                       whole engine or should we
                                                        concentrate on balancing
                                                     vibrations inside the engine?
                                                       Part of the need to balance
                                                          vibrations is to help the
                                                        measuring systems. Are
                                                        there measuring systems
                                                      inside the engine that would
                                                     still experience vibrations in a
                                                           design like this one?



Brief description:         Name of the solution:           hydro pulser

                           Drawing No:        1.4

                           Creator:   Team Munich

                           Date:   02/08/00
                                                           Derived
 Critical / Info needed:                                   from No:




                             mass balance of
                           rotating mass forces


Brief description:                 Name of the solution:

                                   Drawing No:

                                   Creator:

                                   Date:
                                                                                                 Derived
 Critical / Info needed:                                        Con-Rod                          from No:




   •Compensates
   only rotary mass
   forces



   Could also be
  used to balance
  1st order(~50%)




                                                  Counterweight

Brief description:                                   Name of the solution:    2 Counterweights

      Different counterweights to allow varying      Drawing No:        2.1

                                                     Creator:   Team Darmstadt

                                                     Date:   02/03/00
                                                                                               Derived
 Critical / Info needed:                                        Con-Rod                        from No:


  •Causes additional
  stress of crankshaft




                                                  Counterweight

Brief description:                                   Name of the solution:   1 Counterweight

      Different counterweights to allow varying      Drawing No:    2.1.1

                                                     Creator:   Team Darmstadt

                                                     Date:   02/03/00
                                                                       Derived
 Critical / Info needed:              Con-Rod                          from No:




                                                                 Excentric
                                                               Counterweight




Brief description:         Name of the solution:   Counterweight on Crankshaft

                           Drawing No:    2.1.2

                           Creator:   Team Darmstadt

                           Date:   02/03/00
                                                                                                Derived
 Critical / Info needed:                                        Con-Rod                         from No:


  Won’t this add only
    weight to the
       conrod?                                                                               done

    That´s right.




                                                  Counterweight

Brief description:                                   Name of the solution:    Compensating Con-rod

      Different counterweights to allow varying      Drawing No:        2.2

                                                     Creator:   Team Darmstadt

                                                     Date:   02/03/00
                                                                                                        Derived
 Critical / Info needed:                                                                                from No:




 •Compensates only                                                                                       done
 rotating forces
 •Easily combined
 with compensation of
 oscillating forces
                                                                                   Crankshaft axis
                                      Counterweight
   Could be a good                                           a
  idea with some of
 the variable stroke
 ideas … when you
  change the crank
   radius you could
   also change the
    counterweight                                                                    Crank pin
        radius


Brief description:                                        Name of the solution:    Variable counterweight-radius

                                                          Drawing No:        2.3
  Mass of counterweight remains the same only a changes
                                                          Creator:   Team Darmstadt

                                                          Date:   02/03/00
                                                                                                Derived
 Critical / Info needed:                                                                        from No:




                                  counterweight




Brief description:                                  Name of the solution: Rotary club balance


          Compensation only of rotary mass forces   Drawing No:        2.4

                                                    Creator:   Team Darmstadt

                                                    Date:   02/03/00
                                                           Derived
 Critical / Info needed:                                   from No:




                               mass balance of
                           oscillating mass forces
                                   1st order



Brief description:                 Name of the solution:

                                   Drawing No:

                                   Creator:

                                   Date:
                                                                                                         Derived
 Critical / Info needed:                                                                                 from No:




                           Counterweights
                                                                                             Counterweights


                                     ω                                                 Balance of oscillating
                                                                                         forces 1st order
                                                                                   ω


                                                                                       Balance of rotary forces




Brief description:                                        Name of the solution: Lancaster for Daimler-Chrysler

  No compensation of oscillating mass forces 2nd degree   Drawing No:        3.1

                                                          Creator:   Team Darmstadt

                                                          Date:   02/03/00
                                                                          Derived
 Critical / Info needed:                                                  from No:



This is probably why
two gears are used
 on the crankshaft                                              Engine enclosure

                                           crankshaft




                                                        Gears




Brief description:         Name of the solution: Daimler-Chrysler with gears

                           Drawing No:    3.1.1

                           Creator:   Team Darmstadt

                           Date:   02/08/00
                                                                             Derived
 Critical / Info needed:                                                     from No:

 •Direction of
 rotation of shafts
 important? We think                                      Engine enclosure
 it is not. What do you    Rotate in same direction
 think?
 •Problems with
 durability of belts?

 Shafts must rotate
    in opposite
   directions to
 cancel horizontal                                       Belts/Chains
       forces




Brief description:           Name of the solution: Daimler/Chrysler with belts/chains

                             Drawing No:    3.1.2

                             Creator:   Team Darmstadt

                             Date:   02/08/00
                                                                                                            Derived
 Critical / Info needed:                                                                                    from No:   7

  The writing is hard
  to read, so we don´t
  understand. Maybe
    Americans have
  better eyes because
   of the vitamin D in
   the cheeseburgers


               Carrots from
             Jonathon’s garden


  Isn’t this the same
 principle as drawing
       A on 0.5?




Brief description:                                                Name of the solution:    Happy new gear
 •If we want to compensate the mass forces of 1st order with
 an additional mass mosc1 at the crank shaft, we have to          Drawing No:        3.2
 eliminate the horizontal force this mass creates, e.g. through
 two shafts that rotate in opposite direction.
                                                                  Creator:   Team Munich
 •This will be compatible with other solutions for 2nd order as
 well.
                                                                  Date:   02/08/00
                                                                                                     Derived
 Critical / Info needed:                                                                             from No:



   Uses only one
   shaft instead of
          two
    Possible to
      add two
     additional
   shafts for 2nd            100% rotating
       order.
                           and 50% oscillating

     Why is it
    expired, it
   seems good!

Produces moment
about contact point
    of 2 gears


Brief description:                                     Name of the solution:
 Use weight on crankshaft to eliminate 50% of 1st
 order vibrations and another shaft to eliminate the   Drawing No: 3.3
 other 50% … could easily be adopted to add 2nd
 order support                                         Creator:   Stolen from some hard working American guy /
                                                                                    Clemson
 US Patent # 04800852 (expired)                        Date:   02/08/00
                                                                                                                                      Derived
 Critical / Info needed:                                                                                                              from No:

 •Oscillating forces 1st
 order compensated
 •lubrication
 •Second order not
 compensated ?
 •If the movement of the
 lever and the
 counterweights are a
 strict Sinus-curve then
 second order mass
 forces are not
 compensated, but if
 the movement is like
 the piston (please refer
 to the literature) then
 it would be a complete
                            This solution does not compensate oscillating forces 2nd order only first order is compensated refer to picture No.0.9.
 balance for Fosc
                            For compensation of second order an additional guaideline has to be provided in perpentigular position.


Brief description:                                                      Name of the solution:                       guideline

                                                                        Drawing No:          3.4.1.

                                                                        Creator:        Team Munich

                                                                         Date:     02/08/00
                                                                        Derived
 Critical / Info needed:                                                from No:




 •Only oscillating 1st
 order, second order
 possible using                    This won´t work smoothly!!!
 additional guideline
 2
 •this solution is ment
 to be similar to 3.4.1
 but with the
 difference that the
 mechanism with the
 guide is in the center
 of the crankshaft =>
 additional moment




Brief description:         Name of the solution:          guideline 2

                           Drawing No:    3.4.2

                           Creator:   Team Munich

                           Date:   02/08/00
                                                                               Derived
 Critical / Info needed:                                                       from No:




                                     mass balance of
                           oscillating mass forces 2nd order
                                  (also maybe 1st and rotating mass-balance)




Brief description:                              Name of the solution:

                                                Drawing No:

                                                Creator:

                                                Date:
                                                                                                    Derived
 Critical / Info needed:                                                                            from No:


Advantages to the shaft
design:
Possible to eliminate close                                     Balance of oscillating forces 2nd order
to 100% of vibrations
                              Counterweights   2ω
oil temperature rises
(friction)                                                             2ω              Counterweights

Disadvantages to shaft
design:                                   ω                                      Balance of oscillating
Need a lot of space                                                                forces 1st order
                                                                           ω
Higher weight
Friction
High revolutions (12,000                                                         Balance of rotary forces
rpm in 2nd order shafts)
Higher forces in the
engine (because gasforces
are not compensated by
oscillating forces)
More complicated design




Brief description:                                  Name of the solution:       Lancaster-balance

     Complete mass balance of one-cylinder engine   Drawing No:     4.1.

                                                    Creator:   Team Darmstadt

                                                    Date:   02/03/00
                                                                        Derived
 Critical / Info needed:                                                from No:


 •Direction of
 rotation of shafts
 important? We think
                                                  Engine enclosure
 it is not. What do
 you think?We mean
 relatively to the
 crank shaft, not to
 each other!

   It doesn’t matter
   which gear turns
  in which direction                                   Gears
    as long as they
  move in opposite
     directions and
  cancel the vertical
      forces of the
       crankshaft

Brief description:         Name of the solution: Lancaster-balance with gears

                           Drawing No:    4.1.1

                           Creator:   Team Darmstadt

                           Date:   02/08/00
                                                                        Derived
 Critical / Info needed:                                                from No:

 •Direction of
 rotation of shafts
 important? We think
 it is not. What do you                           Engine enclosure
 think?
 •Problems with
 durability of belts??

 Same problem as
 3.1.2 (wheels turn
     in the same
 direction and don’t                                   Belts/Chains
       eliminate
 horizontal forces)




Brief description:         Name of the solution: Lancaster-balance with belts/chains

                           Drawing No:    4.1.2

                           Creator:   Team Darmstadt

                           Date:   02/08/00
                                                                                            Derived
 Critical / Info needed:   1st order force generated through:          Rotating shaft       from No:
                           2nd order force generated through:          Rotaing shaft
 The red pair has to       Position of 1st order system:               Above (parallel)
                           Position of 2nd order system:               Under (parallel)
  move in opposite         Motion generating device (1st order)        Crankshaft
    directions to          Motion generating device (2nd order)        Shaft first order
                           Motion transmitting device (1st order)      Gear
    themselves!            Motion transmitting device (2ndorder)       gear
  Otherwise there
   are horizontal
   forces or the
   vertical would
 compensate each
       other.
  The same for the
       blue gears.
  If you use 2 gears
  on the crankshaft
    like 4.1 you can
  make the 2 shafts
    turn in opposite
        directions
Brief description:                                                  Name of the solution:

                                                                    Drawing No: 4.1.3.

                                                                    Creator:

                                                                    Date:
                                                                 Derived
 Critical / Info needed:                                         from No:
                                                   w
                                                                w




 We should keep the
                                                       w
 variation in mind, it
   could be very                                       One of the shaft has to
                                                         turn the other way
        useful!                                                around




Brief description:         Name of the solution:

                           Drawing No: 4.1.4

                           Creator:

                           Date:
                                                                                                   Derived
 Critical / Info needed:                                                                           from No:


  2nd order forces
   are horizontal
      forces!

                                                                        Oscillating forces
                                                                           1st order




                           2w


                                              2w


                                half radius

Brief description:                                 Name of the solution:        Happy new gear 2
   complete mass balance                           Drawing No:        4.2

                                                   Creator:   Team Munich

                                                   Date:   02/08/00
                           1st order force generated through:         Liner moving mass     Derived
 Critical / Info needed:   2nd order force generated through:         Rotaing shaft         from No:
                           Position of 1st order system:              Under
                           Position of 2nd order system:              Under (parallel)
                           Motion generating device (1st order)       Pneumatic cylinder
    Blue shafts            Motion generating device (2nd order)       Crankshaft
                           Motion transmitting device (1st order)     rod
   have to rotate          Motion transmitting device (2ndorder)      gear
    in different
     directions

    Thermodynamic
       influence



  Piston is only for
  mass balance …
     there is no
    combustion




Brief description:                                                  Name of the solution:

                                                                    Drawing No: 4.3

                                                                    Creator:

                                                                    Date:
                                                                                            Derived
 Critical / Info needed:                                                                    from No:



 •Camshaft typically
 rotates at half the
 speed of the
 crankshaft
 •Balance of the
 camshaft?
 •Complete
 balanced (Fosc and                                                           This way is better for
 Frot) engine due to                                                         mass balance but that
 180° Crankshaft;                                                             doesn’t matter … we
 with 2 Cylinder                                                             only have one cylinder,
 We shouldn´t use                                                                  remember?
  the camshaft                                                    This should be drawn
                                                                differently, the 2 cylinders
                                                                combust at the same time
                                                                because it´s a four-stroke-
                                                                          engine!
Brief description:                            Name of the solution:
                                                                                          Tell this guy!
  Uses motion of crankshaft and camshaft to   Drawing No: 4.4.1
  balance mass
  US Patent # 04651689                        Creator:   Stolen from some hard working Austrian guy /
                                                                          Clemson
                                              Date:   2/8/00
                                                                       Derived
 Critical / Info needed:                                               from No:




 •balance oscillating
 forces by using a
 double cylinder; then
 second cylinder is
 only for balancing
 (=> not fired)                                            Doubles mass forces!
                                                         (oscillating first order and
                                                                   rotating)
    Influence on
  thermodynamic?
  Piston is only for
  mass balance …
     there is no
    combustion

    Lots of mass
    moments!

Brief description:         Name of the solution:   TWIN Engine

                           Drawing No: 4.4.2

                           Creator:

                           Date:
                                                                                                Derived
                               1st order force generated through:           Liner moving mass          39
 Critical / Info needed:                                                                        from No:
                               2nd order force generated through:           Rotaing shaft
         Will                  Position of 1st order system:                Above ?????
                               Position of 2nd order system:                Under (parallel)
      produce a                Motion generating device (1st order)         Crankshaft
       moment                  Motion generating device (2nd order)         Crankshaft
         !!!!                  Motion transmitting device (1st order)       rod
                               Motion transmitting device (2ndorder)        gear
  If there are 2 conrods
   (moving in opposite
  directions), you won’t
  need the two shafts, it
 will be balanced already
     How is the piston
      arranged on the
 crankshaft?There are two
  possibilities see scetch!!

 Blue shafts have to
 rotate in different
 directions
Thermodynamic
influence



Brief description:                                                      Name of the solution:

                                                                        Drawing No: 4.4.3

                                                                        Creator:

                                                                        Date:
                                                                                   Derived
 Critical / Info needed:                                                           from No:




                           Additional ideas which don´t fit to one of the topics




Brief description:                         Name of the solution:

                                           Drawing No:

                                           Creator:

                                           Date:
                                                                        Derived
 Critical / Info needed:                                                from No:

 • No info needed it
 seems to work
 •only 2nd order; 1st
 order balanced by
 the 4 cylinder
 engine itself




Brief description:         Name of the solution:    BMW Solution (318 i) E46

                           Drawing No:        5.2

                           Creator:       BMW

                           Date:   02/03/00
                                                                                         Derived
 Critical / Info needed:                                                                 from No:



  Why not use the
  boxer engine !!!


                           Using a BMW M52 6-cylinder-engine for thermodynamic testing
                                            (12-cylinder too expensive)
                                           advantage: using series parts

 Using a one-cylinder-
    boxer-engine is
  completely new!!!!


   It also would be
   making barking
        noises!


Brief description:                             Name of the solution:       Best Engine

                                               Drawing No:         5.3

                                               Creator:   Team Darmstadt

                                                Date:   02/03/00
                                                                   Derived
 Critical / Info needed:                                           from No:


•What about the
oscillating forces ? Is
this a solution for mass-
balance
• 6000 rpm are not
possible using
hydraulic power
•It is only a general
idea




Brief description:          Name of the solution:    NoFear 2000

                            Drawing No:        5.4

                            Creator:   Team Munich

                            Date:   02/08/00
                                                     Derived
 Critical / Info needed:                             from No:




Brief description:         Name of the solution:
                                               FEV
                           Drawing No: 5.5

                           Creator:

                                      2/9/00
                           Date:
                                                   Derived
 Critical / Info needed:                           from No:




Brief description:         Name of the solution:

                           Drawing No:
                                         5.6
                           Creator:

                                      2/9/00
                           Date:

				
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
views:4
posted:12/9/2011
language:
pages:50