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Production Intent DME Fuel System Design - PowerPoint PPT Presentation


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Production Intent DME Fuel System Design. Design Approach. Designed for CNC Manufacture-Avoids Capital Investment 35% Fewer Parts-Low Cost, Improved Reliability Higher Pressure Capability (400 Bar +) Poppet Solenoid, Low Leakage 75 HP/Cylinder Capability. Design Features-Pump.

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Presentation Transcript
design approach
Design Approach
  • Designed for CNC Manufacture-Avoids Capital Investment
  • 35% Fewer Parts-Low Cost, Improved Reliability
  • Higher Pressure Capability (400 Bar +)
  • Poppet Solenoid, Low Leakage
  • 75 HP/Cylinder Capability
design features pump
Design Features-Pump
  • 5-Cyl. Pump (vs 7)
  • Ø10.5 Plungers (vs Ø12.5)
  • 5 cc/rev (vs 11.7cc/rev)
  • Bolt-on Cam w/Cermet Insert
  • Machined Housings-No Castings
  • 8-Bolt Pattern-No Special Seals Needed
pump assembly
Pump Assembly

LOADING…

common rail features
Common Rail Features
  • Vacuum Brazed Tube & Block
  • No Secondary Operations (Grinding or Straightening)-Proven Process
  • Integral Poppet Solenoid (Zero Leak)
  • No Solenoid O-Rings
  • Screw-In Fittings for Tubes
fuel injector features
Fuel Injector Features
  • Ø17mm Primary Diameter
  • Ø25mm Maximum Diameter
  • Axi-symmetric Design
  • No Leak-Vent Needed
  • Simple to Manufacture
  • Low Cost
control module
Control Module
  • Similar to Previous Design
  • Housing Modified for Bolt-On Bracket
  • New Rail Pressure Valve (Lower Cost)
  • Electronic Backpressure Valve Will Be Replaced w/Passive Valve
  • New, Low Cost Internal Filter
prototype low volume production 2000 units year
Prototype & Low Volume Production (2000 Units/Year)
  • AFT Can Produce Housings, Shafts, Cylinders, Semi Finished Plungers, Guide Plates, Injectors, Covers & Modules
  • Have Ordered State of Art CNC Equipment-Delivery in 6 Weeks
  • Outsource Finished Plungers, Slippers, Nozzle Valves, Solenoid Valves
  • Assembly & Test Can Be Done In-House
prototype cost lead times
Prototype Cost & Lead Times
  • Prototype Cost & Lead Times Reduced by 50%
  • Changes Can Be Made Rapidly
  • Assembly Simplified-Field Serviceable
  • Easily Adaptable to Many Engines
  • Production Planned 2009