Question 93Motor Plants - 1st Asst/Chief70% to pass
Fuel combustion in a diesel engine cylinder should begin just before the piston reaches top dead center and should_______________.
AI Explanation
The correct answer is D) continue through the afterburning period.
In a diesel engine, fuel combustion should begin just before the piston reaches top dead center and continue through the afterburning period. This allows for complete combustion of the fuel, maximizing the engine's efficiency and power output. The fuel injection is timed to start slightly before top dead center to allow for the ignition delay period, ensuring the fuel is fully combusted by the time the piston reaches top dead center.
The other options are incorrect because: A) Fuel injection completion does not necessarily mark the end of combustion; B) Combustion should not be exactly completed at top dead center; and C) Combustion should not end at bottom dead center, as that would result in incomplete fuel burn.
Related Questions
#91 Catalytic fines comprised of aluminum oxide and/or silicon dioxide are a common contaminant of residual fuels. Which diesel engine components would be most effected by catalytic fines in fuel? #92 When is fuel injected into a cylinder of diesel engines? #94 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 _______________.#95 The rate of pressure rise during the period following fuel ignition in a diesel engine is influenced by the length of the ignition delay period and the _______________.#96 The purpose of the interlocked three-way valve shown in the illustration is to _______________. Illustration MO-0058