Detroit Diesel PowerPoint Template - PowerPoint by 43ZdcL50

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									SouthEast Diesel Collaborative
   Clean Diesel Initiatives
  Kirk Gavaghan 27-Jun-07
         EPA Emissions Requirements




Technical Solution to meet EPA07 emissions standard
 Optimized EGR to meet NOx emissions levels
 Diesel Particulate Filter (DPF) aftertreatment system to meet
  PM emission levels



                                                         DaimlerChrysler Truck Group   1
Several Key Vehicle Technologies are being introduced!



                                                       New
                                                     Exhaust
                                                     Systems

                                                                 New
                                                                Cooling
                                                               Packages


                                                                                       Modified
                                                                                        Front
                                                                                       Frames
  Aftertreatment
     Devices

                          Various
                          Engine
                         Upgrades
                                                                    DaimlerChrysler Truck Group   2
               2007 Series 60 Engine Changes



                                    Right Side View
                                                      Cold Pipe



    VG Turbo                                          Fan Bracket/
                                                      Radiator Mount


                                                      Increased Flow
HC Doser                                                Water Pump




Higher-Capacity                                               Front
  EGR Cooler                                             Engine/Radiator
                                                            Mounting
                                                       DaimlerChrysler Truck Group   3
                  2007 Series 60 Engine Changes



                                   Left Side View               New Intake
                                                               Manifold and
  EGR Valve                                                     EGR Mixer
 With Electric
   Actuator

                                                        HC Doser Controls

Intake Throttle
     Valve                                                           MCM
                                                                    All new
                                                                    electronics and
                                                                    software




                                                    DaimlerChrysler Truck Group   4
           DDEC VI Engine Electronics




 Receives input from temperature and pressure sensors on the
  Aftertreatment Device (ATD)
 Controls the intake throttle valve to raise exhaust
  temperatures as required

 Controls the doser to periodically add a small amount of fuel into
  the exhaust system to raise exhaust temperatures there by
  providing active regeneration




                                                           DaimlerChrysler Truck Group   5
            Aftertreatment System (ATS)




                                        Aftertreatment Device (ATD)
                                              • Diesel Particulate Filter (DPF)
                                              • Diesel Oxidation Catalyst (DOC)
                                        Doser
                                        Intake throttle
                                        DDEC VI controls

 Intake
                                       Doser
Throttle
  Valve                                                               Aftertreatment Device
                                                                               (ATD)


                                          T     T      P          T




           Diesel Oxidation Catalyst
                    (DOC)                                  Diesel Particulate Filter (DPF)


                                                                                 DaimlerChrysler Truck Group   6
                       Doser System


 The doser system is used to inject a small amount of diesel fuel
  into the exhaust stream
 Temperature is increased as the fuel passes through the oxidation
  catalyst exhaust to burn off soot in the DPF
 The system is controlled by DDEC VI and has two primary components
      1. Doser block controls fuel flow based on input from DDEC VI
      2. Doser valve injects a fine mist of fuel into exhaust steam which evaporates prior to
         reaching the filter



  Fuel pressure
    regulator                             Doser block
                                           assembly




                                                              Doser coolant
                                                               return line



             Doser fuel line                                  Doser valve


                                                                            DaimlerChrysler Truck Group   7
             Particulate Matter (PM) Filtration




 Engine exhaust passes through the
  porous walls of the particulate filter
  where soot is trapped

 Accumulated soot is periodically
  regenerated or “burnt-off”

 Ash is a residual non-combustible
  material (created by small amounts
  of lube oil in the exhaust) which
  remains in the filter cells that must
  periodically be removed




                                                  DaimlerChrysler Truck Group   8
Aftertreatment Device Components


                                                                                    Exhaust Gas
                                      Temperature              Temperature
                                                                 Sensor
                                                                                    From Engine
                                        Sensor
 Temperature                                        Pressure
   Sensor      Pressure                              Sensor
                Sensor




  Exhaust
    Out




                          Coated Diesel             Coated Diesel
                           Particulate               Oxidation
                              Filter                  Catalyst

                                                                             DaimlerChrysler Truck Group   9
Aftertreatment Regeneration Animation


Thermal Management Goal is to have only transient regeneration utilized to
eliminate PM (soot) accumulation in almost all segment applications..….




                                                                    DaimlerChrysler Truck Group
                             EPA 2010 Requirements

•    Regulatory
     83% reduction in NOx compared to EPA ’07
         From ~1.20 to 0.20 g/hp-hr
     OBD* requirements
     NTE** enforced through in-use emissions test run by
      manufacturer


•    Customer                                                                                Diesel Particulate
     Fuel economy, performance, heat rejection, durability /
                                                                                -90%         Filter for EPA 2007
      reliability and cost comparable or better relative to EPA ’07


•    Other                                                                                      Increased EGR
                                                                                                Dual Actuator Fuel System
     Minimize unregulated emissions                                                            Optimized Combustion
         e.g. Vanadium, NH3, N2O
                                                                               -83%

                                                                      Optimized Combustion
                  * OBD – On-board Diagnostics                        NOx Aftertreatment
                  ** NTE – Not-to-Exceed

                                                                                                     DaimlerChrysler Truck Group   11
    Urea-SCR Remains the Lead NOx Aftertreatment Technology for 2010 Heavy-Duty

•      Mature Technology
        Durability and Reliability for End-Customer
•      Fuel Economy
•      Material Cost
•      Impact on Vehicle Cooling System


•      Requires Secondary Fluid
        Urea Infrastructure Required
        Compliance / Anti-Tampering Measures Required


•      Progress is being made on both the infrastructure and the compliance issue, in collaboration with other engine and vehicle OEMs, the EPA
       and the Engine Manufacturers Association (EMA)
        Certification Procedure Guidance Document Issued March, 2007




                                                                                                                   DaimlerChrysler Truck Group   12
Low Emissions Combustion, DPF and Urea SCR Integrated on a Vehicle Test-bed




             Example System Integration                                     2010 Technology Vehicle at
          Installation for Long Sleeper Cabs                              the DEER 2006 Vehicle Display




                                                                                            DaimlerChrysler Truck Group   13
Urea Infrastructure (Through DC Network)

               Freightliner, Sterling & Western Star Brands, DDC Distributors & TA Service Point Locations




                                                                                                             DaimlerChrysler Truck Group   14
                             Biodiesel Position Statement

Detroit Diesel supports the development of alternative and renewable fuels because:


      It helps to reduce America’s dependence on foreign oil
      It helps to reduce environmental contaminant concerns
           Lifecycle reduction in carbon dioxide
           Reduction in particulate matter
           Reduction in carbon monoxide
           Reduction in volatile organic compounds
           Reduction in sulfur dioxide
      It supports local economies




                                                                                      DaimlerChrysler Truck Group   15
                             Biodiesel Position Statement, Cont




Excerpt from 7SE270 Publication, “Lubricating Oil, Fuel and Filters”


      5.1.3 BIODIESEL FUELS
     Biodiesel fuels are alkyl esters of long chain fatty acids derived from renewable resources. Detroit Diesel highly recommends
     biodiesel fuels made from soybean or rapeseed oil through the proper transesterification reaction process. Other feedstock
     source of biodiesel fuels such as animal fat and used cooking oils are not recommended by Detroit Diesel. Biodiesel fuels
     meeting ASTM D 6751 specification and from a BQ-9000 accredited producer, prior to blending can be mixed up to 5%
     maximum by volume in petroleum diesel fuel. The resulting mixture must meet the fuel properties listed in Table 5-1 and
     ASTM D 975 specification. Failures attributed to the use of biodiesel fuel will not be covered by Detroit Diesel product
     warranty. Also, any engine performance problem related to the use of biodiesel fuel would not be recognized nor considered
     Detroit Diesel's responsibility.




                                                                                                        DaimlerChrysler Truck Group   16
                                 Biodiesel Specifications



 Inconsistent quality across the nation is a significant concern
       Promote the use of BQ-9000 or similar programs intended to provide consistent product
       Greater enforcement of standards nationwide
 B5 and B20 Specifications
       DD supports the inclusion of B5 into ASTM D 975
       Collaborate with biodiesel community, FIE and fuel filter manufacturers to develop needed specifications
      Industry Specification for Final B20 Blend
            Support B20 EMA test specification
            Develop stand alone ASTM B20 specification
            ASTM D 6751 for biodiesel (B100) is nearly complete but lacks:
                    Density
                    Cold soak filtration requirement
 Desirable to harmonize ASTM D 6751 and EN14214 European spec for B100 and blends for all testing parameters



                                                                                                                   DaimlerChrysler Truck Group   17
                       Testing Plans with B20 In 2007 Engines


 Detroit Diesel continues to actively investigate the impact of B20 on current 2007 hardware including:
      Overall engine durability
      High pressure fuel injection systems
      Aftertreatment devices
      Seal compatibility with ULSD blends
      Performance and emissions evaluation
 Testing is focused on the MBE900 medium duty engine
      B20 is popular in bus fleet applications
      All DD engines are being evaluated with B20 blends




                                                                                                     DaimlerChrysler Truck Group   18
                    Biodiesel Effect and Concerns On 2007 Engines


 Engine Emissions
   Engines are certified with petroleum ULSD Fuel
       Potential NOx effect must be resolved
 EPA willingness to support biodiesel
   Concerns about recommendations without sufficient data on emissions effect
 Long-term field experience
   Engine seal compatibility with the reduction of aromatics in the ULSD fuel and biodiesel
   DPF contamination and regeneration process
   Fuel system performance & risk (deposits, corrosion, oxidation stability)
   Potential decrease in oil drain interval
       Sludge formation, viscosity increase/decrease, TBN depletion
   Reduced cold flow properties
   Fuel filter plugging:
       B20 solvency effect
       Microbial and water contaminations
       Oxidation and storage stability




                                                                                               DaimlerChrysler Truck Group   19
THANK YOU!

								
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