Arrangement type of high-pressure common-rail fuel injection system of V-shaped eight-cylinder diesel engine

Abstract

The invention relates to an arrangement type of a high-pressure common-rail fuel injection system of a V-shaped eight-cylinder diesel engine. The arrangement type includes that a high-pressure pump (1) is mounted inside a V-shaped included angle of the diesel engine and is close to a transmission end, right-row common-rail pipes (3) are arranged on right gas inlet pipes of the engine, left-row common-rail pipes (8) are arranged on left gas inlet pipes of the engine, common-rail diesel injectors (5) are arranged on cylinder covers (2), the right-row common-rail pipes (3) are communicated with the corresponding common-rail diesel injector (5) via high-pressure pipelines (4), the left-row common-rail pipes (8) are communicated with the corresponding common-rail diesel injector (5) via high-pressure pipelines (4), the right-row common-rail pipes (3) are communicated with the left-row common-rail pipes (8) via a lower high-pressure pipeline (6), and the high-pressure pump (1) is communicated with the left-row common-rail pipes (8) via an upper high-pressure pipeline (7). The arrangement type has the advantages that the high-pressure capacity of the integral system can be reduced, and accordingly the arrangement type is favorable for controlling starting and the rail pressure of the engine.

Description

technical field [0001] The invention belongs to the field of high-pressure common-rail systems for diesel engines, and in particular relates to an arrangement type of a high-pressure common-rail fuel injection system for a V-shaped 8-cylinder diesel engine. Background technique [0002] The arrangement type of the high-pressure common rail fuel injection system is divided into: in-line type and V type according to the overall type of the engine. Specific to the arrangement of components of the high-pressure common rail system, it can be divided into: single high-pressure pump, single common-rail pipe, and common-rail injectors lined up according to the arrangement of the cylinders; single high-pressure pump, double common-rail pipe, common The rail injectors are respectively installed in the mounting holes of each cylinder head according to the layout structure of the V-type machine. However, the existing high-pressure common rail system with single high-pressure pump and ...

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Problems solved by technology

[0003] The present invention solves the problems of complex high-pressure pipeline arrangement and large high-pressure volume of the V-type engine in the prior art, and provides a layout type of the high-pressure common rail fuel injection system of the V-type 8-cylinder diesel engine

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