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What results in the use of a high degree of overlap inat lower engine speed?(a) Loss of torque(b) Gain of performance(c) loss of torque and performance(d) Gain of torque and performanceI have been asked this question during an interview for a job.The doubt is from Variable Valve Timing topic in chapter Valve Timing Technologies of Automotive Engine Design

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Right ANSWER is (C) loss of torque and performance

The best I can explain: The use of a high DEGREE of valve overlap results in a loss of torque and performance at lower engine speeds. Moreover, the engine idling is also unstable-the engine hunts and misses, on STALL.



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