Question

On this stroke, in a four stroke engine, the exhaust valve remains open while the piston moves upwards:

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

Answer 1

Option C). In a four-stroke internal combustion engine, the phase where the exhaust valve remains open while the piston moves upwards is known as the exhaust stroke.

Step-by-step explanation:

The exhaust stroke is the portion of a four-stroke internal combustion engine's operation when the piston is moving upward and the exhaust valve is still open. The primary purpose of this phase, which follows the power stroke, is to clear the combustion chamber of used gases so that the engine is ready for a new cycle. The air-fuel mixture is introduced during the intake stroke, compressed during the compression stroke, and ignited during the power stroke to produce the force necessary to move the vehicle. As a result, exhaust stroke is the right response to the question.