Isuzu Motors Ltd. and Westport Innovations Inc. agree to develop a prototype Isuzu Elf truck powered by a Westport Cycle natural gas engine. Isuzu initiated the project and will fully fund it. The prototype Elf will use a diesel engine of about 4L in displacement that will run solely on natural gas using Westport’s hot surface ignition technology. Isuzu says the natural gas engine should have the same performance and fuel efficiency as the diesel-fueled engine but with lower emissions and ...

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