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.

The German automaker sees your four-stroke engine and raises you... two more strokes. Ready for some math? Porsche just ...

Along with a TIG welder and mechanical ingenuity bordering on genius-level, all of which come to bear on this fridge compressor to four-stroke engine build. The video posted by [Let’s Learn ...

The maritime industry has worked with a single fuel source for over a century and with the rush to meet emission standards in ...