A city bus will often have its engine installed in the rear, but how does that impact the bus versus installing the engine in ...

Less fuel and emissions, more power, higher revs. EcoMotors' OPOC engine promised it all. Investors, including Bill Gates, gave money. And lost money.

While the Scuderi Split-cycle engine may be very new (his patent was filed in July 2001), it is based on a design that's been ...