Westport Innovations High Pressure Direct Injection of Natural Gas
Westport & Alternative Fuels Westport Innovations is a public company started in 1995 as a spin-off from research at the University of British Columbia The company has specialized in alternative fuels, with an emphasis on Natural Gas Core technology is High Pressure Direct Injection (HPDI) of natural gas Considerable research into Hot Surface Ignition of high pressure natural gas on a diesel cycle engine Work also continues with hydrogen Direct Injection (supporting Ford and BMW programs)
Primary Westport Products, Activities, and Partners Mid-Range Truck/Bus Industrial Hydrogen Research Heavy Duty Truck LNG Tanks
HPDI System Common-rail diesel fuel pump hydraulic pump  (drives LNG Pump) fuel conditioning module control units (chassis mounted) fuel injectors (under valve cover) LNG tank and pump (chassis mounted) warm,  high-pressure natural gas
HPDI Technology Pilot diesel injected just prior to natural gas to provide energy for auto-ignition of gas injection Natural gas injected at high pressure at end of compression stroke (no pre-mixed air/fuel) Low diesel usage under all conditions Average of 6% diesel over vehicle operating cycle Diesel Engine Performance remains Same high power and torque Same or higher efficiency Robust combustion over wide range of fuel composition (no premixed air/fuel so no chance of detonation) Typical Emission Reductions (Australian Targets) 30% lower NOx 60% lower PM 20% lower GHG
Common-rail style injector Directly replaces diesel injector Capable of independently injecting diesel and gas at up to 30 MPa injection pressure Diesel used as an ignition source, actuation fluid, lubricant, and coolant High Pressure Direct Injection Diesel HPDI
HPDI Trucks

Mobilis 2008 - A4 : High Pressure Direct Injection of Natural Gas

  • 1.
    Westport Innovations HighPressure Direct Injection of Natural Gas
  • 2.
    Westport & AlternativeFuels Westport Innovations is a public company started in 1995 as a spin-off from research at the University of British Columbia The company has specialized in alternative fuels, with an emphasis on Natural Gas Core technology is High Pressure Direct Injection (HPDI) of natural gas Considerable research into Hot Surface Ignition of high pressure natural gas on a diesel cycle engine Work also continues with hydrogen Direct Injection (supporting Ford and BMW programs)
  • 3.
    Primary Westport Products,Activities, and Partners Mid-Range Truck/Bus Industrial Hydrogen Research Heavy Duty Truck LNG Tanks
  • 4.
    HPDI System Common-raildiesel fuel pump hydraulic pump (drives LNG Pump) fuel conditioning module control units (chassis mounted) fuel injectors (under valve cover) LNG tank and pump (chassis mounted) warm, high-pressure natural gas
  • 5.
    HPDI Technology Pilotdiesel injected just prior to natural gas to provide energy for auto-ignition of gas injection Natural gas injected at high pressure at end of compression stroke (no pre-mixed air/fuel) Low diesel usage under all conditions Average of 6% diesel over vehicle operating cycle Diesel Engine Performance remains Same high power and torque Same or higher efficiency Robust combustion over wide range of fuel composition (no premixed air/fuel so no chance of detonation) Typical Emission Reductions (Australian Targets) 30% lower NOx 60% lower PM 20% lower GHG
  • 6.
    Common-rail style injectorDirectly replaces diesel injector Capable of independently injecting diesel and gas at up to 30 MPa injection pressure Diesel used as an ignition source, actuation fluid, lubricant, and coolant High Pressure Direct Injection Diesel HPDI
  • 7.