Which of the following operates at the highest temperatures?
A) exhaust valves
B) intake valves
C) solid lifters
D) rockers

Question

Quizplus · Accepted Answer

Exhaust valves operate at the highest temperatures because they are in direct contact with the hot gases exiting the combustion chamber, which are much hotter than the air-fuel mixture entering through the intake valves. Solid lifters and rockers are components that operate within the valve train but do not directly contact the combustion gases, hence they are exposed to lower temperatures compared to exhaust valves.

Which of the Following Operates at the Highest Temperatures