If you have a metering valve adjustment device. Use the suction control valve adjusting device (signal generator) on the pump to adjust the driving current of the suction control valve to see the change of rail pressure.The diesel suction control valve can be removed from the pump, and the driving current of the valve can be adjusted by the suction control valve common rail diesel adjusting device (signal generator) to see the movement of the spool.
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In a diesel electronically controlled high-pressure common rail injection system, the common rail pressure control valve plays a very important role. As the first "checkpoint" of the high-pressure oil circuit, it is also a common wearing part in addition to the fuel injector when the engine is in use.
Nissan Navara Suction Control Valve，SCV Nissan Navara，Nissan Navara pressure suction control valve A6860-VM09A
Because the engine ECU controls the injection system including injection pressure, injection rate and injection timing, it is not affected by engine speed or load. This can ensure that a stable injection pressure is always maintained, especially in the low engine speed range, and can greatly reduce the amount of black smoke usually emitted by diesel engines during start-up and acceleration. Therefore, exhaust emissions are cleaner and reduced, and a higher power output is achieved.
Diesel engine fuel metering unit inspectionAfter the fuel metering unit is disassembled, it is mainly composed of the following parts. The electromagnetic coil is integrated into the shell. Front iron gasket. case. Piston, spring, adjusting washer.There are two types of fuel metering units: normally