Question 379Motor Plants - Assistant Engineer70% to pass
The diesel engine shown in the illustration, is provided with an auxiliary blower to_______________. Illustration MO-0003
AI Explanation
The correct answer is A) provide scavenge air pressure at low load.
The auxiliary blower in the diesel engine illustration is used to provide additional air pressure to the engine's scavenge air system, particularly at low engine loads. This helps ensure sufficient air flow through the engine cylinders, which is crucial for complete combustion and efficient operation, especially when the engine is not generating enough natural air flow on its own at low loads.
The other answer choices are incorrect because: B) maintaining a positive pressure on the crankcase is not the primary function of the auxiliary blower, C) increasing scavenge air pressure at full load is not necessary as the engine's natural air flow is sufficient at high loads, and D) maintaining a vacuum on the crankcase is not the role of the auxiliary blower.
Related Questions
#377 Why will a turbocharged diesel engine produce black smoke if excessive additional load is applied too quickly? #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_______________. #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? #381 The power consumed during the scavenging process of a diesel engine is known as the_______________. #382 During the valve overlap period, the exhaust pressure of a turbocharged, four-stroke cycle diesel engine must be less than the intake manifold pressure to ensure_______________.