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motorcycle-engine pdf

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									Te c h n i c a l                        N o t e



Torque Pulsation of a 1340 cc Harley Davidson
Motorcycle Engine for Various Operating Conditions




January, 2002
                                                                                                     TECHNICAL
                                                                                                       NOTE

                                                                Torque Pulsation of Motorcycle Engine




Engine at Idle Conditions
                                                           Engine Torque vs Crank Shaft Angle


                         500.0




                         400.0




                         300.0
Engine Torque (Ft*Lbs)




                         200.0




                         100.0




                           0.0
                              -360   -270           -180          -90           0               90       180        270       360



                         -100.0




                         -200.0
                                                                   Crank Shaft Angle (Degrees)

Throttle Position (%)                           6          Ave Torque (Ft*Lb)          0.6            PMEP (Bars)         -0.55
Engine Speed (Rpm)                          1000           Output Power (Hp)           0.1            FMEP (Bars)          0.09
Pre-Ignition Angle                            0.0          IMEP (Bars)                0.54            BMEP (Bars)          0.08
2                                        Torque Pulsation of Motorcycle Engine
                                                         TECHNICAL NOTE


    Engine at 2500 Rpm with Wide Open Throttle

                                                                    Engine Torque vs Crank Shaft Angle


                             500.0




                             400.0




                             300.0
    Engine Torque (Ft*Lbs)




                             200.0




                             100.0




                               0.0
                                  -360        -270           -180          -90           0               90      180        270       360



                             -100.0




                             -200.0
                                                                            Crank Shaft Angle (Degrees)

    Throttle Position (%)                             100           Ave Torque (Ft*Lb)         70.6           PMEP (Bars)         -0.55
    Engine Speed (Rpm)                               2500           Output Power (Hp)          33.6           FMEP (Bars)         -0.06
    Pre-Ignition Angle                                 0.0          IMEP (Bars)                9.58           BMEP (Bars)          8.97
Engine at 2500 Rpm with Wide Open Throttle and Misfire on the First Cylinder

                                                           Engine Torque vs Crank Shaft Angle


                         500.0




                         400.0




                         300.0
Engine Torque (Ft*Lbs)




                         200.0




                         100.0




                           0.0
                              -360   -270           -180          -90           0               90      180        270       360



                         -100.0




                         -200.0
                                                                   Crank Shaft Angle (Degrees)


Throttle Position (%)                        100           Ave Torque (Ft*Lb)         33.7           PMEP (Bars)         -0.55
Engine Speed (Rpm)                          2500           Output Power (Hp)          16.0           FMEP (Bars)          0.04
Pre-Ignition Angle                            0.0          IMEP (Bars)                4.79           BMEP (Bars)          4.28




                                                             TECHNICAL NOTE
                                                             Torque Pulsation of Motorcycle Engine                               3
4                                        Torque Pulsation of Motorcycle Engine
                                                         TECHNICAL NOTE


    Engine at 2500 Rpm with Wide Open Throttle and Misfire on the Second Cylinder

                                                                    Engine Torque vs Crank Shaft Angle


                             500.0




                             400.0




                             300.0
    Engine Torque (Ft*Lbs)




                             200.0




                             100.0




                               0.0
                                  -360        -270           -180          -90           0               90      180        270       360



                             -100.0




                             -200.0
                                                                            Crank Shaft Angle (Degrees)

    Throttle Position (%)                             100           Ave Torque (Ft*Lb)          33.1          PMEP (Bars)         -0.55
    Engine Speed (Rpm)                               2500           Output Power (Hp)           15.7          FMEP (Bars)         -0.03
    Pre-Ignition Angle                                 0.0          IMEP (Bars)                 4.79          BMEP (Bars)          4.21
Engine at 5000 Rpm with Wide Open Throttle

                                                                Engine Torque vs Crank Shaft Angle


                          500.0




                          400.0




                          300.0
 Engine Torque (Ft*Lbs)




                          200.0




                          100.0




                             0.0
                                   -360   -270           -180           -90            0          90      180        270       360



                          -100.0




                          -200.0

                                                                       Crank Shaft Angle (Degrees)

Throttle Position (%)                             100             Ave Torque (Ft*Lb)       64.7        PMEP (Bars)         -0.55
Engine Speed (Rpm)                               5000             Output Power (Hp)        61.6        FMEP (Bars)         -0.27
Pre-Ignition Angle                                 0.0            IMEP (Bars)              9.04        BMEP (Bars)          8.22




                                                                    TECHNICAL NOTE
                                                                    Torque Pulsation of Motorcycle Engine                          5
6                                             Torque Pulsation of Motorcycle Engine
                                                                  TECHNICAL NOTE


    Engine at 5000 Rpm with Wide Open Throttle and Misfire on the First Cylinder

                                                                          Engine Torque vs Crank Shaft Angle


                              500.0




                              400.0




                              300.0
     Engine Torque (Ft*Lbs)




                              200.0




                              100.0




                                 0.0
                                       -360        -270            -180            -90            0          90      180        270       360



                              -100.0




                              -200.0

                                                                                  Crank Shaft Angle (Degrees)

    Throttle Position (%)                                  100               Ave Torque (Ft*Lb)       30.5        PMEP (Bars)         -0.55
    Engine Speed (Rpm)                                    5000               Output Power (Hp)        29.1        FMEP (Bars)         -0.09
    Pre-Ignition Angle                                      0.0              IMEP (Bars)              4.52        BMEP (Bars)          3.88
Engine at 5000 Rpm with Wide Open Throttle and Misfire on the Second Cylinder

                                                               Engine Torque vs Crank Shaft Angle


                         500.0




                         400.0




                         300.0
Engine Torque (Ft*Lbs)




                         200.0




                         100.0




                            0.0
                                  -360   -270           -180           -90             0          90     180         270      360



                         -100.0




                         -200.0

                                                                      Crank Shaft Angle (Degrees)

Throttle Position (%)                            100              Ave Torque (Ft*Lb)       30.0        PMEP (Bars)         -0.55
Engine Speed (Rpm)                              5000              Output Power (Hp)        28.5        FMEP (Bars)         -0.16
Pre-Ignition Angle                                0.0             IMEP (Bars)              4.52        BMEP (Bars)          3.81




                                                                   TECHNICAL NOTE
                                                                   Torque Pulsation of Motorcycle Engine                            7
                            UNICO–Worldwide

                            Corporate                United States         South America         Asia
                            Headquarters             Novi, Michigan        El Tigre, Venezuela   Osaka, Japan
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                            USA                                            Siegen, Germany
Specifications subject to                            Canada
change without notice.      voice:   262.886.5678    Mississauga,          49.271.5015.0
                            fax:     262.504.7396    Ontario
9129 1/02                   www.unicous.com          905.602.4677

								
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