Question 101Motor Plants - Assistant Engineer70% to pass
Which statement about diesel engine combustion is true?
AI Explanation
The correct answer is D) Maximum cylinder firing pressure is not developed until the piston passes TDC.
This is correct because in a diesel engine, combustion begins before top dead center (TDC) and the maximum cylinder pressure is reached after the piston has passed TDC on the power stroke. The delay between ignition and maximum pressure is due to the combustion process taking time to fully develop.
The other options are incorrect: A) is false because combustion begins before the power stroke, B) is false because maximum pressure is reached after TDC, and C) is false because turbulence actually helps the ignition and combustion process, not delays it.
Related Questions
#99 The pressure in an operating diesel engine cylinder continues to rise for a short period after the piston passes top dead center as a result of the_______________. #100 On the cylinder indicator diagram illustrated, the maximum rise in pressure occurs during the period labeled as_______________. Illustration MO-0033 #102 Fuel combustion in a diesel engine cylinder should begin just before the piston reaches top dead center and should_______________.#103 On the cylinder indicator diagram illustrated, the dotted line indicated as 'L' is describing the_______________. Illustration MO-0033 #104 Which area of the indicator diagram illustrated, indicates the afterburning period in a diesel engine cylinder? Illustration MO-0033