有一台1105柴油机,进气门摇臂折断后,还继续工作。机手虽然买了新件,但仍不换上,并把这种缺件带“病”工作视为“发明革新”。在其影响下,有的卸掉了进气门推杆。其实这样的“发明革新”是有害无益的。大家知道,一般柴油机进气门在排气行程上止点前曲轴转角8°～16°时打开,在进气行程下止点后22°～50°时关闭。这样才能保证发动机进气充足,柴油燃烧充分。如果不装进气门推杆或摇臂,在进气行程,只有气缸内产生的真空吸力克服了气门弹簧的弹力时,进气门才能打开,向气缸内充气;活塞下行 There is a 1105 diesel engine, the intake valve rocker arm broken, but also continue to work. Although the driver bought a new one, he still did not put it on and considered this missing one as a “invention innovation”. Under its influence, some unload the intake valve putter. In fact, such “innovation” is detrimental. We all know, the general intake valve in the exhaust stroke before the crank angle of 8 ° ~ 16 ° open when the intake stroke at the bottom dead center 22 ° ~ 50 ° off. In order to ensure sufficient engine intake, diesel combustion. If you do not install the valve into the lever or rocker arm, the intake stroke, only the vacuum suction generated by the cylinder to overcome the spring force of the valve spring, the intake valve can be opened to inflate the cylinder; piston down