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维修拖拉机经常见到发动机上的气缸盖、活塞、缸套、气门、喷油嘴等部位,牢固地粘附着一层积炭.积炭是燃料和窜入燃烧室中的润滑油,未能充分燃烧而形成的.积炭的成份包括沥青、油焦和灰分等.造成燃料燃烧不良或润滑油窜入燃烧室的原因:①活塞与缸套、活塞环与环槽磨损,配合间隙过大,封闭不严,产生漏气,致使燃料燃烧不完全,同时又能使润滑油窜入燃烧室.②柴油机供油量过多,汽油机混合气过浓,造成雾化不良,影响燃料燃烧,③柴油机的喷油器,汽油机的火花塞,工作不正常,导致燃料不能充分燃烧.④柴油机的供油角度不准确,汽油机的点火时间过早或过晚.⑤空气滤清器堵塞,配气机构发生故障,致使充气不足,
Tractor repair often see the engine cylinder head, piston, cylinder liner, valves, fuel injectors and other parts, firmly attached to a layer of coke. Coking is the fuel and fleeing into the combustion chamber of the oil, failed to Full combustion and the formation of carbon composition, including asphalt, oil coke and ash, etc. Cause fuel combustion or lubricating oil fleeing into the combustion chamber of the reasons: ① piston and cylinder liner, piston ring and ring groove wear, with the gap is too large , Closed lax, resulting in leaks, resulting in incomplete combustion of fuel, but also make the lubricant fleeing into the combustion chamber.② diesel engine over supply, gasoline mixture is too thick, resulting in poor atomization, affecting fuel combustion, ③ Diesel fuel injector, gasoline engine spark plugs, not working properly, resulting in the fuel can not be fully burned. ④ Diesel fuel supply angle is not accurate, the ignition timing of the gasoline engine is too early or too late. ⑤ air filter blockage, the valve body occurs Failure, resulting in lack of inflation,