PROBLEMS


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PROBLEMS
PROBLEMS 6.1. For four-stroke cycle engines, the inlet and exhaust valve opening and closing crank angles are typically: IVO 15° BTC; IVC 50° ABC; EVO 55° BBC; EVC 10° ATC. Explain why these valve timings improve engine breathing relative to valve opening and closing at the beginnings and ends of the intake and exhaust strokes. Discuss the additional design issues that are important. 6.2. For four-stroke engines, the inlet and exhaust valve opening and closing crank angles are typically: IVO: 15° BTC IVC: 50° ABC
Citation
John B. Heywood: Internal Combustion Engine Fundamentals, Second Edition. PROBLEMS, Chapter (McGraw-Hill Professional, 2018), AccessEngineering Export