Question

In a four-stroke cycle aircraft engine, when does the ignition event take place?

Answer 1

In a four-stroke cycle aircraft engine, the ignition event takes place during the power stroke.

Step-by-step explanation:

In a four-stroke cycle aircraft engine, the ignition event takes place during the power stroke.

The power stroke has two distinct parts. First, the air-fuel mixture is ignited, converting chemical potential energy into thermal energy almost instantaneously, which leads to a great increase in pressure. Then, the piston descends, and the gas does work by exerting a force through a distance in a nearly adiabatic process.