Question

On this stroke, in a four stroke engine, the inlet valve is open while the piston moves downward:

Select one:
a. compression stroke
b. intake stroke
c. power stroke
d. exhaust stroke

Answer 1

Option B). The intake stroke occurs when the inlet valve is open and the piston moves downward, drawing air and fuel into the combustion chamber.

Step-by-step explanation:

In a four-stroke internal combustion engine, the intake stroke is the part of the engine's operation where the piston descends and the inlet valve is open. The combustion chamber is filled with a mixture of fuel and air thanks to this stroke. The air-fuel mixture is compressed with the valves closed during the intake stroke, which comes before the compression stroke. The power stroke, which comes after the compression stroke, ignites the air-fuel mixture, causing it to expand and push the piston downward. The cycle is finally completed when the exhaust stroke removes the spent gases from the chamber.