Split assembling mechanism of common rail injection system of diesel engine

Abstract

The invention discloses a split assembling mechanism of a common rail injection system of a diesel engine, which comprises a base, a common rail pipe fixing component and an oil injector fixing component. In the split assembling mechanism, a common rail pipe and an oil injector are respectively fixed to mounting positions opposite to each other, and an oil pipe and relative sealing joints are mounted hermetically. After being mounted, the integral common rail injection system is subjected to hermetical detection and then mounted on an engine after being qualified in the hermetical detection. Since the assembling of the common rail injection system and the process of mounting the common rail injection system onto the engine which have the same requirements for clean environment are carried out simultaneously, assembling time is saved, assembling efficiency is higher, the single unit occupies smaller clean space but requires shorter assembling cycle, and the split assembling mechanism is applicable to assembling of diesel engines in various types. Further, to the small-size diesel engines, limitation on assembling space is removed, assembling difficulty is reduced and working efficiency is improved favorably. Meanwhile, testing of the engine body is omitted in the online leakage test for sealing joints of parts of the injection system, so that test is simplified relatively and production cost is reduced.

Description

technical field [0001] The invention relates to a power machine component, in particular to an auxiliary tool for installing a common rail injection system of a diesel engine. Background technique [0002] Common rail technology refers to a fuel supply method that completely separates the generation of injection pressure and the injection process from each other in a closed-loop system composed of a high-pressure oil pump, a pressure sensor and an ECU. It uses a high-pressure oil pump to deliver high-pressure fuel to the public fuel supply pipe. By accurately controlling the oil pressure in the public fuel supply pipe, the pressure of the high-pressure fuel pipe has nothing to do with the engine speed, which can greatly reduce the fuel supply pressure of the diesel engine. changes, thus reducing the defects of traditional diesel engines. [0003] Electronically controlled common rail diesel injection technology represents the current development level and development direct...

AI Technical Summary

Problems solved by technology

In the prior art, the components of the common rail injection are generally directly assembled on the engine, and it has high requirements for environmental cleanliness, which takes up a large space and takes a long time to assemble, wasting production costs; at the same time, due to the large number of parts, The off-line time of the engine is relatively long, reducing work efficiency, especially for small engines, too many parts are assembled in the engine, the space for display is small, and the impact on assembly efficiency is more obvious; Due to the complex structure of the engine body and other reasons, it brings difficulties to the online leak test of the sealing joints of the injection system components

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