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High-pressure pump

A technology for high-pressure pumps and fuel oil, which is applied in the direction of pump components, fuel injection pumps, liquid displacement machines, etc. It can solve the problems of increasing the volume of high-pressure pumps and achieve the effect of small space

Active Publication Date: 2021-05-14
VITESCO AUTOMOTIVE ELECTRONICS (CHANGCHUN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This setting increases the volume of the high pressure pump

Method used

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  • High-pressure pump
  • High-pressure pump

Examples

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Embodiment Construction

[0024] see Figure 1 to Figure 5 As shown, the present invention provides a high-pressure pump 100, which includes a housing 1, a plunger 3, a fixing member 2, a spring 4, a fuel inlet port 5, a fuel outlet port 6, a solenoid valve control port 7, a damper 8 and a seal Holder 9. The fuel inlet port 5 is provided with a fuel inlet channel 51 , and the fuel outlet port 6 is provided with a fuel outlet channel 61 . A fuel inlet port 5 and a fuel outlet port 6 are fixed to the housing 1 .

[0025] The housing 1 is provided with a central axis L. As shown in FIG. The housing 1 includes a plunger channel 12 , a plunger cavity 11 connected to the plunger channel 12 and a protruding portion 14 extending outward. The protruding portion 14 has a first mating surface 141 . The housing 1 also includes a buffer chamber 13 arranged around the plunger passage 12 and a connecting passage 15 connecting the buffer chamber 13 with the fuel inlet passage 51 . The damper 8 is fixed in the buf...

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PUM

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Abstract

The invention provides a high-pressure pump, which comprises a fuel inlet end provided with a fuel inlet passage, a fuel outlet end provided with a fuel outlet passage, a casing, a plunger and a damper. The housing is provided with a central shaft, and the fuel inlet port and the fuel outlet port are fixed to the housing. The casing includes a plunger channel, a plunger cavity connected to the plunger channel, a buffer chamber arranged around the plunger channel, and a connecting passage connecting the buffer chamber with the fuel inlet channel. The plunger is arranged in the plunger passage and can reciprocate in the plunger passage along the direction of the central axis. The damper is fixed in the buffer chamber. The invention reduces the space occupied by the high-pressure pump by fixing the damper in the buffer chamber arranged around the plunger channel.

Description

technical field [0001] The invention relates to a high-pressure pump, especially a high-pressure pump with a damper. Background technique [0002] The high-pressure fuel pump is used to deliver high-pressure fuel to the oil distribution pipe to ensure continuous high-pressure fuel supply to the fuel injectors. The high-pressure fuel pump supplies fuel through the low-pressure fuel pump in the fuel tank, pressurizes it and delivers it to the fuel supply pipe, and cooperates with the fuel pressure regulator to establish a certain fuel pressure. In order to reduce the noise emitted when the fuel flow is reduced, a damper is usually provided in the high pressure pump. [0003] Chinese Patent Publication No. CN102052220B discloses a high-pressure pump, which places a damper above the plunger channel. This setting increases the volume of the high pressure pump. Contents of the invention [0004] The object of the present invention is to provide a high-pressure pump with a sma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M63/02F02M55/04F02M59/10F02M59/44F04B11/00
CPCF02M55/04F02M59/10F02M59/442F02M63/0265F04B11/0008
Inventor 王永涛
Owner VITESCO AUTOMOTIVE ELECTRONICS (CHANGCHUN) CO LTD