On a 4 stroke, the piston will travel from TDC to BDC four ... When fueling up a 4 stroke, you just have to add fuel just like you do on a car. Emissions standards come into play with deciding ...

starts with the piston at the top of the cylinder (TDC) and the intake valve open to admit air and fuel. At bottom-dead-center (BDC) the inlet valve is closed and the compression stroke (b) starts.

You may have heard your car has a four-stroke engine, but you're not sure what that means. Why are there four? And what is a stroke, anyway? A modern gas engine most commonly uses pistons and a ...

The company describes the new engine as having a "working cycle" of three complete crankshaft revolutions with two distinct top dead center (TDC) and two bottom dead center (BDC) piston heights.