Westport InnovationsHigh 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 ColumbiaThe company has specialized in alternative fuels, with an emphasis on Natural Gas

Core technology is High Pressure Direct Injection (HPDI) of natural gasConsiderable research into Hot Surface Ignition of high pressure natural gas on a diesel cycle engineWork also continues with hydrogen Direct Injection (supporting Ford and BMW programs)

Mid-Range Truck/Bus

Industrial Hydrogen Research

Heavy Duty Truck

Primary Westport Products, Activities, and Partners

LNG Tanks

HPDI System

Common-raildiesel

fuel pumphydraulicpump (drives LNG Pump)

fuel conditioningmodule

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 injectionNatural 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 remainsSame high power and torqueSame 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 NOx60% lower PM20% lower GHG

Common-rail style injectorDirectly replaces diesel injectorCapable of independently injecting diesel and gas at up to 30 MPa injection pressureDiesel used as an ignition source, actuation fluid, lubricant, and coolant Diesel HPDI

High Pressure Direct Injection

HPDI Trucks