The injector of oil machine generally uses the axle needle type and the porous type two kinds of forms, the injector has the more precise needle valve even piece, its match clearance only 0. 002^-0. $number mm, if there is impurity in diesel, it is easy to make needle valve stuck. In addition, the nozzle head in the combustion chamber for a long time with high temperature, high-pressure gas contact, easy to make the needle valve gradually expanded, deformation, wear, and then affect the normal operation of diesel engine.Diesel Engine Parts
Fuel injector oil failure phenomenon, when the machine temperature is low, the exhaust pipe will emerge from the strands of white smoke, the machine a rise then become black, sometimes exhaust pipes will emit irregular sound, exhaust pipe sometimes also produces oil phenomenon. If you stop supplying oil to the cylinder, exhaust fumes and firecrackers disappear. The cause of the malfunction, the needle valve is blocked by charcoal or is bitten dead in the open position, so that the needle valve can not be returned; When the injector is working, the seal cone of the needle valve body is impacted frequently by the needle valve, and then the high-pressure oil flow is continuously ejected from the place, and the cone will appear nicks and spots. And gradually lose the tightness, high pressure spring break or high pressure screw loosening The sealing is not tight; These barriers can easily lead to oil injectors.Diesel Engine Parts
Failure phenomenon engine work feebly, shivering, unstable, exhaust pipe appeared "Teng, teng" sound and black smoke out of the phenomenon. Failure causes the water or acidic substance in the diesel to cause the needle valve to rust or to live p, in addition, the needle valve seal cone damage, the cylinder can be combustible gas will also channeling the formation of carbon to make the needle valve die, injector can not spray oil, the cylinder stopped working, diesel engine power drop.
The needle valve pieces can be heated until boiling smoke in the waste oil. Then use the hand clamp pad soft cloth clip the needle valve tail end slowly activity will pull it out, another dip clean oil so that needle valve in the needle valve body repeatedly grind until the needle valve pieces upside down, the needle valve can from the needle valve body slowly exit. If the fuel injector is still not qualified after the test, the needle valve pair should be replaced.Diesel Engine Parts