Why do most diesel engines tend to be undersquare?
A) To produce high compression ratios.
B) Turbocharging is easier to accomplish in undersquare engines.
C) To increase thermal efficiency therefore reducing rejected heat.
D) It cost less to make undersquared engines.

Question

Quizplus · Accepted Answer

Undersquare engines have a longer stroke, which allows for a larger combustion chamber and therefore a higher compression ratio. High compression ratios are desirable in diesel engines because they improve efficiency and power output.

Why Do Most Diesel Engines Tend to Be Undersquare