Mounting tool for engine fuel injector

Abstract

The invention discloses a mounting tool for an engine fuel injector. The mounting tool comprises a correcting plate and a correcting shaft, wherein a shaft hole, a key groove circumferentially formed in the shaft hole and four through holes circumferentially and uniformly distributed in the correcting plate are formed in the center of the correcting plate; the key groove and a center connection line of the two through holes in one column form a certain included angle; the included angle is equal to that between a high-pressure connection pipe mounting hole and a center connection line of two valve rods corresponding to the two through holes in one column; a strip positioning key matched with the key groove is arranged at the upper part of the correcting shaft; a bayonet is arranged at the lower part of the correcting shaft; a fuel inlet of the fuel injector has the same direction as the strip positioning key when an opening in the upper end of the fuel injector is blocked by the bayonet; and the correcting shaft penetrates into the shaft hole of the correcting plate and is locked into the key groove through the strip positioning key to move up and down in the key groove. The mounting tool can effectively guarantee the fuel inlet of the fuel injector to be aligned to the high-pressure connection pipe mounting hole so as to avoid influence of engine performance due to bad operation of the fuel injector caused by fuel leakage from a high-pressure connection pipe and the fuel inlet of the fuel injector.

Description

technical field [0001] The invention relates to the field of engines, in particular to an engine fuel injector installation tool. Background technique [0002] When assembling the fuel injector of the diesel engine, it is necessary to ensure that the oil inlet hole of the fuel injector is aligned with the installation hole of the high-pressure connecting pipe that supplies fuel to the fuel injector, so as to ensure the working performance of the fuel injector. The oil inlet hole of the injector should be aligned with the installation hole of the high-pressure connecting pipe. The upper and lower axial directions are guaranteed by the design and processing of the cylinder head, and the left and right circumferential directions are guaranteed by assembly. [0003] Since the high-pressure connection pipe hole on the cylinder head is not perpendicular to the outer surface of the cylinder head it extends into, it forms a certain angle with the axis of the fuel injector installati...

AI Technical Summary

Problems solved by technology

[0004] This assembly method cannot effectively ensure that the fuel inlet hole of the fuel injector is aligned with the installation hole of the high-pressure connecting pipe, which will cause fuel to leak from the high-pressure connecting pipe and the fuel inlet hole of the fuel injector, resulting in poor work of the fuel injector and affecting engine performance; at the same time, The efficiency of this assembly method is very low, affecting the overall assembly efficiency of the diesel engine

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