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问:气门头部直径和气门升程是如何决定的?答:进气门和排气门的头部直径及气门升程直接影响发动机的进气和功率。下面以发动机的容积效率和充量系数为基础,从如何保证燃烧所需新鲜气体的绝对量和流入量来讨论气门头部直径和气门升程。
Q: How does the head diameter of the valve and how the valve lift is determined? A: The head diameter of the intake valve and the exhaust valve and the valve lift directly affect the intake air and power of the engine. The following is based on the volumetric efficiency of the engine and the charge coefficient, discussing the valve head diameter and valve lift from how to ensure the absolute amount and inflow of fresh gas required for combustion.