|Challenger Motor Freight Driver, Robert Brodie, with truck 60170, powered by Westport’s HPDI technology|
Westport Innovations Inc. has deployed its next-generation
heavy-duty natural gas engine technology along Highway 401, Canada’s busiest
The deployment is part of a $3 million development and
demonstration project supported Sustainable Development Technology Canada
(SDTC) and a Westport-led consortium. Consortium members include Challenger
Motor Freight Inc., Enbridge Gas Distribution Inc., Natural Resources Canada
and Transport Canada.
Challenger Motor Freight Inc., based in Cambridge, Ontario,
will operate five new Volvo trucks equipped with 450-horsepower Cummins ISX
engines using Westport’s High-Pressure Direct-Injection (HPDI) technology.
Fuelled by LNG, the trucks will travel Ontario and Michigan, a route dubbed by
the project partners as "The Clean Air Corridor." A new LNG fuel
station has been installed at Challenger’s truck terminal in London, Ontario to
support fueling of the trucks during the one-year demonstration project.
HPDI trucks match the power, torque, and fuel efficiency of
current state-of-the-art diesel trucks but with significantly reduced
emissions. This field demonstration project follows the successful field trial
of Westport’s first-generation HPDI engines that began almost four years ago in
California. Since then, Norcal Waste’s fleet of 13 trucks in San Francisco have
logged more than 6.5 million kilometres (4.2 million miles) of in-service
operation hauling city waste from a transfer station to the landfill and
reducing smog-forming emissions of nitrogen oxides and unburned hydrocarbons
(NOx and NMHC) by more than 20 tonnes.
Westport says the Challenger HPDI trucks incorporate several
major improvements over those first-generation vehicles, demonstrating improved
vehicle performance, lower emissions and higher reliability. New features
include the first deployment of Westport’s proprietary low heat-leak LNG tanks
with integrated LNG pumps, higher pressure improved common-rail injection
system for better combustion and emissions at all operating conditions, and a
high reliability integrated fuel conditioning module (FCM) that monitors and
regulates fuel flow to the engine. By carefully coupling these design features
with the advanced turbocharger and exhaust gas recirculation (EGR) control from
the Cummins diesel engine, the next generation HPDI system has increased power
and torque ratings of 450 horsepower and 1,650 lb-ft with efficiency with the
same or better fuel economy of the latest diesel engines.
Together, the new technology is expected to produce 50
percent lower emissions of NOx compared to the first generation systems while
retaining particulate matter (PM) at approximately 80 percent lower than
today’s environmental standards. In addition to combining low NOx and PM with
high fuel efficiency, the HPDI system also reduces greenhouse gas emissions by
20 to 25 per cent compared to equivalent diesel trucks. This emission reduction
is due largely to the HPDI technology substituting natural gas for diesel fuel
in the combustion process, with a small amount of diesel fuel injected to
LNG provides two-and-a-half times the energy storage as the
same volume of compressed natural gas (CNG), which allows for on-board fuel
capacity on the Challenger trucks to achieve 500-mile (800 km) range.
Information supplied by Westport Innovations