Because the nozzle of diesel engine is in poor atomization state, there is dripping phenomenon, which will cause exhaust gas to emit black smoke and so on. However, the abnormal operation of high-pressure oil pump will lead to abnormal engine performance and power decline. Therefore, it is necessary to replace or adjust the fuel injector.

The oil pump proposes an oil pump having a housing made of an aluminum-containing material and a movable molded part arranged in the housing, wherein the movable molded part is at least partially made of a sinterable material containing at least one austenitic iron-based alloy.

And wherein the thermal expansion coefficient of the molded part made of the sinterable material is at least 60% of that of the shell.

Extended data:

Precautions:

(a) The power supply wiring should be connected to the zero line, and the insulation conditions everywhere should be checked at any time to avoid electric shock; When in use, always check whether the connection or initial contact of the power cord is reliable, so as to prevent the motor from burning out due to lack of phase operation.

(2) Pipes and joints shall be manufactured according to specifications and checked at any time to prevent bursting accidents. When the oil pump is under pressure, the joints, pipelines and oil meters shall not be disassembled.

(3) Check the pressure gauge from time to time to prevent accidents caused by faults.

(4) Before driving, open the control valve (no-load start). When in use, check whether the regulating pressure of the safety valve is appropriate, and always ensure its sensitivity and reliability.

(5) The bearing installed on the upper body shall be replaced with lubricating oil in time according to the situation.

(6) When the oil level is too low, the plane bearing in the pump body shall not work under pressure for a long time.

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