Question 29Motor Plants - Assistant Engineer70% to pass
The highest pressure in a diesel engine cylinder normally occurs_______________.
AI Explanation
The correct answer is C) after TDC (Top Dead Center).
In a diesel engine, the highest pressure in the cylinder normally occurs after Top Dead Center (TDC) during the power stroke. As the piston reaches TDC, the fuel is injected and ignited, causing the rapid increase in pressure and temperature that drives the piston down during the power stroke. The peak pressure occurs slightly after TDC, as the expanding gases continue to push the piston downward.
The other options are incorrect because: A) the pressure peaks after TDC, not at TDC; B) the pressure peaks after TDC, not before; and D) air starting is a separate process not related to the peak cylinder pressure during normal engine operation.
Related Questions
#27 The thermal energy produced by an internal combustion engine is transformed into_______________.#28 In describing engine operation, what does the term "cycle" mean? #30 Modern marine diesel engines equipped with mechanical fuel injection operate on a combustion cycle which is_______________.#31 The load is always placed on the lower half of the main bearings in a/an_______________. #32 The camshaft drive is designed to maintain proper camshaft speed relative to crankshaft speed. In maintaining this relationship, the camshaft drive causes the camshaft to rotate at_______________.