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A high-pressure fuel rail assembly for an engine

A high-pressure oil and engine technology, which is applied to engine components, machines/engines, mechanical equipment, etc., can solve the problems of fast fuel heating and heating, slow fuel heating, affecting the effect of fuel atomization, etc. Compact structure and fast start-up effect

Active Publication Date: 2019-02-15
ZHEJIANG GEELY NEW ENERGY COMML VEHICLES CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the existing problems of the existing high-pressure fuel rail assembly of the engine, such as large external dimensions, unfavorable arrangement in the engine compartment, slow fuel heating and temperature rise, and affecting the fuel atomization effect in low-temperature environments. Provide a high-pressure fuel rail assembly for the engine, which is not only compact in structure and easy to arrange in the engine compartment, but also has a fast heating and heating speed of the fuel, which can realize the rapid start of the engine in a low temperature environment

Method used

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  • A high-pressure fuel rail assembly for an engine
  • A high-pressure fuel rail assembly for an engine
  • A high-pressure fuel rail assembly for an engine

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] Such as figure 1 As shown, an engine high-pressure fuel rail assembly includes a tubular fuel rail 1 with a rectangular cross section and four fuel injectors 2 . In order to facilitate processing and installation, the oil rail 1 of the present invention adopts a split structure. Specifically, the oil rail 1 includes a long box body 11, and the box body 11 forms an opening on one side of the length direction, thereby having two opposite A box cover 12 is welded on the opening of the box body 11 on the side surfaces, the bottom surface connecting the two sides, and the end surfaces at both ends. In addition, an oil inlet pipe 3 is provided in the middle of one side of the box body 11 to facilitate the input of high-pressure fuel, and a mounting bracket 4 is provided on the bottom surface of the box body 11 to install and fix the oil rail ...

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Abstract

The invention discloses a high-pressure oil rail assembly of an engine. The high-pressure oil rail assembly of the engine comprises a tubular oil rail. A mounting support and an oil inlet pipe are arranged on the oil rail. At least two pits which are concave inwards and downwards are formed in the side wall of the oil rail. Oil outlets are formed in the bottom surfaces of the pits. Oil sprayers which communicate with the oil outlets are arranged in the pits correspondingly. A heating device which stretches into the oil rail is arranged in the position, located beside each pit, of the side wall of the oil rail. Each heating device comprises a heating shell, wherein a PTC heating body is arranged in the heating shell, and the space between the PTC heating body and the heating shell is filled with a compression body which is formed by folding a metal wire. The high-pressure oil rail assembly of the engine is compact in appearance structure and can be arranged in an engine compartment conveniently; and in addition, the heating speed of fuel oil is high, and rapid starting of the engine in a low-temperature environment can be achieved.

Description

technical field [0001] The invention relates to the technical field of automobile engines, in particular to an engine high-pressure oil rail assembly. Background technique [0002] The high-pressure fuel rail assembly of the engine usually includes a high-pressure fuel rail made of stainless steel pipes. On the high-pressure fuel rail, there are oil inlet pipes, fuel injectors and mounting brackets for fixing. The high-pressure liquid fuel enters the high-pressure oil from the oil inlet pipe. Rail, and then injected into the engine through the injector. In order to improve the cold start performance of the engine in a low-temperature environment, people usually add a corresponding electric heating device to the high-pressure fuel rail assembly to increase the temperature of the fuel injected from the injector, thereby improving the injection Fuel atomization effect. In the prior art, there are two most common structures of the heating device. One is to integrate the heatin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M55/02
CPCF02M55/025
Inventor 陈冲
Owner ZHEJIANG GEELY NEW ENERGY COMML VEHICLES CO LTD
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