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(1)基本原则发动机气门间隙过小或没有间隙,会使气门关闭不严而漏气,严重时发动机不能启动;间隙过大不仅配气机构产生异响,而且气门开启行程和开启持续角度也会减小,导致排气不彻底,进气不充分,发动机功率下降。较先进的发动机气门挺杆采用液压技术,可自动调整,但多数发动机还需人工调整。气门间隙的检查与调整必须在气门完全关闭的状态下进行。在检查与调整气门间隙之前,必须分析判断气门所处的工作状态,以确定可调气门。基
(1) The basic principle Engine valve clearance is too small or there is no gap, the valve will be closed and lax strictness, the engine can not start serious; gap is too large not only abnormal gas valve mechanism, and the valve opening stroke and opening angle Will be reduced, resulting in incomplete exhaust, intake is not sufficient, the engine power down. More advanced engine valve lifter hydraulic technology, can be automatically adjusted, but most of the engine also need to manually adjust. Valve clearance inspection and adjustment must be fully closed valve state. Before checking and adjusting the valve clearance, you must analyze and judge the working status of the valve to determine the adjustable valve. base