Porsche's new patented six stroke engine might not be a thing of reality yet, but the new technology is still very ...

Both pistons and valves move in and out of a space at the top of engine cylinders known as the “combustion chamber”.

The phrase "Atkinson cycle" is as synonymous with hybrids as the words "Toyota" and "Prius". But what does that even mean and ...

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

Oregonians may be waking up to cold temperatures this week, but despite a commonly held belief, your car doesn't need to warm ...

This could also mean a cleaner, more environmentally friendly combustion engine with reduced emissions and more complete ... with designs ranging from water-injection systems to more complex piston ...

Declining fuel economy can be a sign of a problem with your car. Here are a few reasons you're not getting as many miles per ...

From trains to tanks to finally tearing up the 24 Hours of Le Mans, today diesel outperforms gas for power, efficiency and ...

The Environmental Protection Agency and California Air Resources Board have established that NOx and particulate emissions ...

We hung out with Clay Millican’s Parts Plus Top Fuel dragster to learn what it takes to go from 0 to 330 mph in under four seconds.