Question 377Motor Plants - Assistant Engineer70% to pass
Why will a turbocharged diesel engine produce black smoke if excessive additional load is applied too quickly?
AI Explanation
The correct answer is B) The inertia of the turbocharger rotor causes a time lag which delays the turbocharger speed increase.
When an excessive additional load is applied too quickly to a turbocharged diesel engine, the turbocharger rotor's inertia causes a delay in the speed increase. This delay results in insufficient air supply to the engine, leading to incomplete combustion and the production of black smoke from the exhaust.
The other options are incorrect because:
A) Exhaust energy would not draw excess air, but rather insufficient air due to the turbocharger lag.
C) Exhaust gas pumping losses are not the primary cause of the black smoke.
D) Exhaust gas back pressure does not fall slightly, but rather remains insufficient due to the turbocharger lag.
Related Questions
#375 Aftercooling of a turbocharged diesel engine will result in_______________.#376 The process of scavenging a two-stroke cycle diesel engine serves to_______________. #378 The average exhaust temperature of a two-stroke cycle diesel engine with a turbine- driven supercharger is lower than a similar four-stroke cycle diesel engine at equal loads because_______________. #379 The diesel engine shown in the illustration, is provided with an auxiliary blower to_______________. Illustration MO-0003 #380 A loop or cross scavenged engine utilizes the motion of its pistons and a turbocharger to provide scavenging air. Which of the listed mechanical designs prevents the air under the pistons from being pumped back through the scavenge ports during the piston power stroke?