Oil supply pump assembly impurity collection device

Abstract

The impurity collection device of the fuel supply pump assembly includes a frame with upper and lower layers. The fuel supply pump is installed on the upper layer, driven by a motor, and the first liquid storage bottle is located on the lower layer. The outlet pipeline of the first liquid storage bottle is connected to the filter. The fuel chamber of the fuel supply pump, the fuel pump chamber and the oil inlet of the lubricating chamber are respectively connected through the flow diversion device; the two oil outlets of the fuel chamber of the fuel supply pump and the oil return port of the fuel chamber are respectively connected with output pipelines, and the three output After the pipelines converge, they are connected to the inlet pipeline of the liquid storage bottle 2 through the filter one, and the outlet pipeline of the liquid storage bottle 2 is connected to the fine filter and then connected to the inlet of the liquid storage bottle 1; The pipeline of filter 2 is connected, the oil outlet of the lubricating chamber of the oil supply pump is connected to the pipeline of filter 3, and the output pipelines of filter 2 and filter 3 are merged and connected to the inlet of liquid storage bottle 2 through the pipeline. The present invention can collect impurities on the oil supply pump assembly without dismantling the oil supply pump, and has high impurity collection efficiency and reliable operation.

Description

technical field [0001] The invention relates to the technical field of diesel engines, in particular to a fuel injector for a diesel engine, in particular to a device for collecting impurities in a fuel injector suitable for a high-pressure common rail system. Background technique [0002] The fuel supply pump is an important part of the diesel engine. It can convert low-pressure oil into high-pressure oil and deliver it to the fuel injector. The fuel reserve required for a rapid rise in rail pressure and the required system pressure. The fuel supply pump directly provides high-pressure fuel for the diesel engine, and its performance has an important impact on the performance of the entire diesel fuel injection system. Due to long-term use, the oil supply pump will inevitably invade dust, water and impurities. With the accumulation of intruded impurities to a certain extent, it may corrode the oil in the oil supply pump. Once the oil is mixed with water or deteriorates, the...

AI Technical Summary

Problems solved by technology

This method of disassembling the oil supply pump assembly has the following disadvantages: During the disassembly process of the oil supply pump assembly, interference factors such as thread burrs and surface impurities will be brought in, which will affect the detection accuracy of the cleanliness of the assembly; On the one hand, the dismantling method collects impurities in the fuel pump assembly, which takes a long time and affects the processing and assembly accuracy of parts

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