The induction stroke is the first stroke in the four-stroke cycle. In the induction stroke the piston descends and the intake valve(s) open, drawing in air or an air-fuel mixture (depending on the type of engine).
The induction stroke is the first stroke in the four-stroke cycle. In the induction stroke the piston descends and the intake valve(s) open, drawing in air or an air-fuel mixture (depending on the type of engine).