Question 153Motor Plants - 1st Asst/Chief70% 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 D) provide scavenge air pressure at low load.
The diesel engine shown in the illustration is equipped with an auxiliary blower, which is used to provide scavenge air pressure at low load conditions. At low engine loads, the engine's turbocharger may not be able to generate sufficient scavenge air pressure on its own. The auxiliary blower supplements the turbocharger's output to ensure adequate air supply to the engine under these conditions, maintaining proper combustion and engine performance.
The other answer choices are incorrect because: A) maintaining positive crankcase pressure is not the purpose of the auxiliary blower, B) increasing scavenge air pressure at full load is the function of the turbocharger, not the auxiliary blower, and C) maintaining a vacuum on the crankcase is not the role of the auxiliary blower in this system.
Related Questions
#151 In the common rail system, excessive pressure in the header may be caused by_______________.#152 Poor combustion in a diesel engine can be caused by _______________.#154 In a two cycle diesel engine, a Roots-type blower is usually_______________.#155 Which of the following devices will increase the power output of a diesel engine without increasing its frictional load? #156 Clearance volume scavenging in a turbocharged, four-stroke cycle diesel engine is accomplished _______________.