If an engine is run for maximum mechanical efficiency, where should peak cylinder combustion pressure be achieved?
A) TDC
B) around 15 degrees ATDC
C) around 45 degrees ATDC
D) at 90 degrees ATDC

Question

Quizplus · Accepted Answer

Peak cylinder combustion pressure for maximum mechanical efficiency is typically achieved around 15 degrees After Top Dead Center (ATDC). This timing allows for the effective conversion of combustion energy into mechanical work, as the pressure acts on the piston over a longer distance during the power stroke.

If an Engine Is Run for Maximum Mechanical Efficiency, Where