ERIKC 0445120048 General exchange Injector 0 445 120 048 Original For BOS Fuel Injector 0445 120 048 for MITSUBISHI

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Our company's main products :For BOS denso For Delp  piezo common rail injector ,  valve , nozzle , pump , repair kit , Fuel metering valve , Solenoid valve ,injector nozzle tester , injector repair tool and shim copper oring other injector parts

Injector FAQ

FAQ: Common faults? Injector pressure is low

ERIKC Answer: Fault performance: The diesel engine is not easy to start, and the exhaust gas emits black smoke and the power is reduced during operation.

Analysis of the cause of the malfunction: The fuel injector pressure is not adjusted properly, the pressure regulating nut is not locked, the spring preload is not enough or the spring stiffness is too small, the pressure regulating spring is broken, linear deformation occurs, and the injector pressure is too low, so that the fuel injection The atomizer quality deteriorates and the quality of the mixture gas deteriorates. The pressure regulating spring adjusts the injection pressure of the injector, and its stiffness directly affects the fuel atomization quality of the injector and the life of the needle valve. The spring stiffness is too small during injection. At the end of the process, the needle valve cannot be seated quickly, causing drip and gas backflow, contamination, and heating of the needle valve assembly, which may cause the needle valve to jam. If the stiffness is too large, the impact force of the needle seat will increase exponentially, which will accelerate the wear of the needle valve coupling and cause poor atomization.

Treatment measures: (1) The pressure-regulating spring shall not be cracked, and the two ends shall not be subject to eccentric wear, twisting and twisting, and the bad shall be replaced. The inferior circular concave surface of the lower spring seat needle valve shall be replaced. To ensure the free height of the pressure regulating spring, the compression and load characteristics meet the technical requirements. (2) After adjusting the spring pressure, lock the nut. (3) Check if the spring is broken, adjust the pressure spring and replace it to adjust the pressure.