Question

During which stroke of a four-stroke internal combustion engine is work done to the system of gases?

A. Exhaust stroke
B. Intake stroke
C. Compression stroke
D. Power stroke

Answer 1

never mind the answer is D

Answer 2

I don't see how. The power stroke to me is when the small chamber of gasoline fires and the piston is driven down and drives the wheels. It appears to me that the system of gases is doing work on its surroundings.

Answer 3

is compression stoke, cortney u are wrong

Answer 4

C. Compression stroke