Genuine Quality Common Rail Injector Nozzle DLLA148P2232 Diesel Fuel Injector Nozzle Engine Spare Parts

Failure 1: Uneven atomization, “bias” type of fuel injection
The performance of some of the fuel was large particles of oil droplets sprayed, some of the normal fog, resulting in fuel and air in the combustion chamber imbalance. The cause is mostly carbon and gum inside the fuel nozzle. Long-term use of low-quality fuel, impurities, unsaturated hydrocarbons, etc. at high temperatures in the nozzle hole and the internal flow path precipitation, polymerization, change the trajectory and shape of the fuel injection, like a faucet is clogged with debris, the water flow is skewed and dispersed. Also, the injector for a long time high load operation, its own heat to promote the fuel in the internal coking, destroying the original uniform spray pattern.

Solution, the use of special fuel system cleaner, proportional mixing with fuel, so that the mixture of clean, dissolved components of the fuel in the engine running through the injector, gradually dissolve carbon, gum, dredge the holes and runners, to restore the smooth spraying and atomization of fuel uniformity. Serious clogging, the need to disassemble the injector, with the help of ultrasonic cleaning equipment, the use of high-frequency vibration “shake off” stubborn dirt, and then fine calibration of the injection parameters, to ensure the consistency of fuel injection.

Failure 2: poor atomization, fuel “clumping” ejection
The overall fuel to a thick beam of oil sprayed, can not form a fine mist droplets, so that the combustion efficiency plummeted. This is often triggered by abnormal injection pressure, such as the old mechanical pump injection system, spring fatigue, plunger wear, resulting in insufficient injection pressure, the fuel does not have enough “punch” broken atomization; high-pressure common rail system, rail pressure sensor failure, high-pressure pump valve failure, so that the rail pressure is out of control, deviating from the normal atomization of the required pressure value.

Maintenance, for mechanical pump, accurate measurement of spring elasticity, plunger wear, replacement of damaged parts as needed, adjust the injection pressure to the standard range; high-pressure common rail system with the help of professional diagnostic instrument, read the rail pressure data, check the sensor, regulator valve circuit and mechanical failure, damaged parts in time to replace the new, and then diagnostic instrument to match the calibration of the rail pressure to ensure that the injection pressure is stable to adapt to the atomization needs.

Failure three: oil injection leakage, “out of control” out of oil
Injector off state still have fuel seepage, leakage, not only waste of fuel, but also let the engine “choking” idle instability, startup difficulties. The root cause is the needle valve and valve seat wear, sealing bad, long-term frequent opening and closing, high-pressure fuel impact plus fuel corrosion, resulting in increased clearance; or injector solenoid coil aging, suction is insufficient to pull the needle valve back in time to tightly closed position.

Disposal methods, minor wear and tear can grind the needle valve and valve seat, with fine grinding paste with professional techniques to repair the flatness of the sealing surface to restore the seal; severe wear or solenoid coil damage, it is necessary to replace the brand new injector assembly, and after the installation of strict testing of the injection opening pressure, sealing and atomization effect, to eliminate the potential risk of dripping and leaking.

In the daily maintenance, adhere to the use of clean compliant fuel, regularly add fuel additives to clean the injection system, to avoid prolonged engine idling or overloading, can prevent problems before they occur, guard the injector nozzle atomization “vitality”, to ensure that the engine is healthy and efficient operation.