Question 378Motor Plants - Assistant Engineer70% to pass
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_______________.
AI Explanation
The correct answer is C) two-stroke cycle diesel engines have a lower M.E.P. (mean effective pressure) than four-stroke cycle diesel engines.
The reason for this is that two-stroke cycle diesel engines have a lower M.E.P. compared to four-stroke cycle diesel engines, which results in a lower exhaust temperature. This is because the two-stroke cycle engine has a shorter power stroke and a higher proportion of the cycle is devoted to intake and exhaust, leading to a lower M.E.P.
The other options are incorrect because: A) and C) are contradictory statements, and B) the scavenging air in four-stroke engines would actually lead to a higher exhaust temperature, not a lower one.
Related Questions
#376 The process of scavenging a two-stroke cycle diesel engine serves to_______________. #377 Why will a turbocharged diesel engine produce black smoke if excessive additional load is applied too quickly? #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? #381 The power consumed during the scavenging process of a diesel engine is known as the_______________.