Question 146Motor Plants - 1st Asst/Chief
70% to passSurface irregularities, such as erosion and pitting on injection pump plungers, will _______________.
Aaffect fuel oil metering
Baffect engine performance at low-speed only
Cdisappear due to fuel oil abrasion
Dincrease ignition delay
AI Explanation
The correct answer is A) affect fuel oil metering. Surface irregularities, such as erosion and pitting on injection pump plungers, can alter the precise metering of fuel oil into the engine's cylinders. This change in fuel delivery can negatively impact the engine's performance across all speed ranges, not just at low speeds as suggested in option B. Options C and D are incorrect because the surface irregularities do not simply disappear due to fuel oil abrasion, nor do they increase ignition delay.
Related Questions
Q29:The lower end of the piston rod, shown in the illustration, is fitted into the__... Q94:The pressure in an operating diesel engine cylinder continues to rise for a shor... Q151:In the common rail system, excessive pressure in the header may be caused by____... Q43:When two cams of the same diameter, one with tangential flanks and the other wit... Q124:According to the illustration, initial timing of fuel injection into the cylinde...
Ready to test your knowledge?
Take a Motor Plants - 1st Asst/Chief Practice ExamOfficial Resources