A two-stroke/cycle diesel engine requires less starting air than a four-stroke/cycle diesel engine, of equal displacement, because the two-stroke/cycle diesel engine __________.

Correct Answer: Option D — operates without energy absorbing intake and exhaust strokes

Two-stroke diesel engines omit energy-absorbing intake and exhaust strokes during continuous operation and starting. Consequently, less starting air and cranking energy are required to rotate the crankshaft and initiate combustion compared to four-stroke designs of identical displacement.