Question 188Motor Plants - Assistant Engineer
70% to passWhen an air started, four-stroke cycle diesel engine is being cranked over, the starting air is admitted to each cylinder during the beginning of its_______________.
Aintake stroke
Bcompression stroke
Cpower stroke
Dexhaust stroke
AI Explanation
The correct answer is C) power stroke. When an air-started, four-stroke cycle diesel engine is being cranked over, the starting air is admitted to each cylinder during the beginning of its power stroke. This is because the power stroke is the phase of the engine cycle where the piston is moving downward, and the combustion of the air-fuel mixture provides the force to turn the crankshaft and start the engine. The other options are incorrect because the starting air would not be admitted during the intake, compression, or exhaust strokes, as those are not the optimal points in the engine cycle for starting the engine.
Related Questions
Q387:In a Roots-type rotary blower, the volume of air delivered is directly proportio... Q369:As a general rule, what would be the recommended operating water jacket outlet t... Q383:Air scavenging of the cylinder shown in the illustration begins between figures_... Q454:In the common rail system, excessive pressure in the header may be caused by ___... Q282:Where does the shoot cycle operating liquid first come in contact with the rotat...
Ready to test your knowledge?
Take a Motor Plants - Assistant Engineer Practice ExamOfficial Resources