In a typical medium speed, 4-stroke cycle diesel engine
A)fuel injection starts at 10° before to dead center and ends at 20° after tor dead center
B)fuel injection starts at top dead center and ends at 20° after top dead center
C)fuel injection starts at just before top dead center and ends just after top dead center
D)may start and end anywhere

Question

Quizplus · Accepted Answer

In a typical medium speed, 4-stroke cycle diesel engine, fuel injection usually starts just before the piston reaches the top dead center (TDC) to ensure that the fuel has enough time to mix with the air and start the combustion process as the piston starts its power stroke. Ending the injection after TDC allows for a complete and efficient burn of the fuel. The specific degrees mentioned in option A (starting at 10° before TDC and ending at 20° after TDC) are within the typical range for such engines, ensuring proper combustion and efficiency.

In a Typical Medium Speed, 4-Stroke Cycle Diesel Engine