Diesel engine fuel injector (unit injector), in the form of a machine combination consisting essentially of a high-pressure pump, a solenoid valve and a spray nozzle. The unit injector forms part of a fuel injection system and increases the pressure from 2-3 bar to 300 - 2000 bar. It should be mounted in the engine top cover and driven mechanically with a rocker arm and a camshaft from the engine. The pump is considered to be the main task.
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[1][1]. SEBTITV-2019-06898#662138