Diesel Injector Fuel Injector 095000-6700 Denso Injector for Zhongqi, Sinotruck HOWO

Low-speed truck uphill without flaring off, downhill automatic flaring off This low-speed truck generally has the following two characteristics, one is that there is always air in the oil pipeline, the other is that the engine is weak. The main reason for this strange fault is that the needle valve of the injector is badly worn. There is a low-speed truck with S1110 diesel engine, which is basically normal when running on flat road and uphill, but when going downhill, as long as the oil door is reduced, the diesel engine will automatically stall. The production of this phenomenon, most cases are due to the oil pipeline joint joint suction air caused by. However, after changing all the gaskets at the pipeline joints, the fault still cannot be eliminated. After repeated inspection, it was found that the needle valve of the injector was seriously worn out. When the low-speed truck was driving on the flat road and uphill, the gas in the cylinder could not enter the injector because of the large throttle and the high pressure oil circuit was full of high pressure fuel. However, when the vehicle goes downhill, because the throttle decreases, the high pressure oil path is basically in the state of stopping the oil supply, so the high pressure fuel in the cylinder takes the virtual into the needle valve couple, and enters the low pressure oil path through the oil return pipe, resulting in the automatic flout of the diesel engine. Most of these failures occur in single cylinder diesel engines with poor technical condition. In addition, the pressure regulating spring of the single cylinder diesel injector is broken or the elastic force is too small, which will also produce a similar failure.