1. Repair method for stuck nozzle of diesel generator set
First put the stuck nozzle into diesel oil or oil to heat, and then take out the cloth wrapped, and then clamp the needle valve and slowly move, remove the needle valve from the needle valve body. Drop a small amount of clean oil in the needle body, so that the needle valve in the needle body repeated activities, until the needle valve can move freely in the needle body. If there are burn marks on the sealing surface of the needle valve, it should be ground with grinding paste. When grinding, pay attention to the amount of grinding paste and grinding time. Clean the bell valve parts on the injector, and adjust the injection pressure can be reused.
2. The main reason for the stuck nozzle of diesel generator set
(1) Diesel oil is not clean, there are impurities in the high pressure oil pipe, and the wear and tear of the needle valve couple of the crankjet is forced out, so that the needle valve couple is not strictly closed, the high pressure gas in the combustion chamber is backflowing, and the needle valve couple is burned out. In addition, the injector pressure regulating spring, tappet and other parts of the dirty things through the injector tappet moved to the upper part of the injector needle valve, or on the oil road to prevent oil leakage of cotton rope, lead wire through the high pressure tubing into the injector, will make the needle valve parts stuck.
(2) The temperature of the machine is too high, the cooling of the crankjet is not good, and the valve couple of the manufactured tiger is stuck. But the oil supply time is too late, the cooling channel scale is too much or blocked, the pump impeller end face wear, the engine long-term overload and so on will make the engine overheat.
(3) The exhaust valve wear, so that the fuel injector stops the phenomenon of dripping oil, resulting in the nozzle burning coke and carbon accumulation, stuck fault.
(4) jet buckling pressure is too low, resulting in high pressure gas backchanneling in the combustion chamber;
(5) When the injector is installed, the gasket or gasket is damaged, resulting in air leakage, causing the local temperature of the injector to be too high and stuck.
(6) parts manufacturing reasons, such as cylinder head injector installation hole with injector too tight, needle valve body and cylinder head on the installation hole gap is too small, cylinder head injector installation hole processing is too deep.
Jiangsu Meiao Power Technology Co., Ltd. is an important manufacturer of diesel generators. Us ao-generator set manufacturers mainly manufacture and sell diesel generator sets, the power of generator sets is 3-3000KW, mobile station is 24-600KW, Marine emergency diesel generator set 24-800KW, gas generator set, heavy oil generator set and all kinds of imported series, special series (trailer, silent speaker, mobile lighthouse, container, etc.) diesel generator Group at the same time engaged in generator set maintenance and generator set accessories after-sales service.
