Diesel Injector Fuel Injector 0445110290 0445110126 Bosch

If the fuel injector power supply, control signal, and electromagnetic injector coil electric positive are normal, but the injector still cannot work normally, the electromagnetic injector needs to be disassembled from the engine, and the fuel supply port at the upper end of the injector should be connected to the wire plug. On the special fuel injector detection instrument.
One is to check the quality of spray atomization and atomization angle. Start the fuel injector tester and turn on the light, observe the jet beam of fuel atomization at idle speed, medium speed and maximum speed. The spray angle should meet the design requirements of the automobile manufacturer, and there should be no deflection. The atomized particles are uniform and of the same size. , The same length. For pintle injectors, the atomization distribution is in an umbrella shape, for hole injectors the atomization is in 2 or 4 cone angles, the atomization must not produce large particles of oil droplets
The second is the detection of fuel injection quantity: there are three working conditions for the detection of fuel injection quantity. The idle speed condition is moderately suitable for the working condition and the heavy load condition. The inspection time for each working condition is 15 seconds. Measure the fuel injection quantity with a special measuring cylinder. Under normal circumstances, the difference between the maximum and minimum fuel injection volume of the fuel injector should not exceed 5%. If the difference is too large, it will affect the uniformity of the work of each cylinder and the smooth operation of the engine. The fuel injector should be cleaned or replaced.