In America, the average mpg of a semi truck sits firmly in single-digit territory. Efficiency improvements mean that today's trucks now average around seven mpg, but some states still see trucks ...

Engineered Propulsion Systems of Wisconsin has reached the final stage of design for its Graflight 8 diesel engine, freezing the design in preparation for certification. “That does not mean that we ...

You're driving a loaded diesel rig down a mountain pass, foot hovering over the brake pedal, heart racing. How do you slow 20,000 pounds safely without cooking your brakes? Cue the exhaust brake -– ...

A tech firm smashed the record for diesel engine thermal efficiency, hinting at future fuel savings for both motorists and businesses. Achieving a whopping 53.09 per cent in thermal efficiency, this ...