The power stroke extracts work from these gases as they expand and force the piston to BDC. In the exhaust stroke, the exhaust valve is open and the combustion products are expelled from the cylinder.

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

Join us as we examine the history of the motorcycle engine from steam to stroke. Read more: 10 Of The Most Reliable Motorcycles Ever Built The number of cylinders and strokes an engine uses to ...

“What kind of engine would take the best advantage of ... the waste heat from the exhaust as part of a steam bottoming cycle. Although the ARPA-E contract did not include demonstrations of ...