低噪音高压燃油泵

By designing a sound-insulating shell and honeycomb groove structure on the high-pressure fuel pump, combined with a fixing mechanism that facilitates installation, the problem of high operating noise of the high-pressure fuel pump is solved, achieving the effects of noise reduction and convenient installation.

CN224515291UActive Publication Date: 2026-07-17RUIAN HENGXING AUTO PARTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
RUIAN HENGXING AUTO PARTS CO LTD
Filing Date
2025-07-03
Publication Date
2026-07-17

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Abstract

本实用新型涉及高压燃油泵技术领域，且公开了低噪音高压燃油泵，包括高压燃油泵本体，高压燃油泵本体的外表面固定安装有连接板，高压燃油泵本体的外表面套接有隔音机构，连接板的上表面固定安装有两组固定机构，固定机构的插接端和隔音机构相插接。本实用新型通过隔音壳及其内部的蜂窝槽能够有效吸收和阻隔高压燃油泵工作时产生的噪音，大大降低了燃油泵运行时的噪音分贝，减少了对周围环境的影响，提高了使用环境的舒适度。
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Claims

1. A low-noise high-pressure fuel pump, comprising a high-pressure fuel pump body (1), the outer surface of the high-pressure fuel pump body (1) is fixedly provided with a connecting plate (2), characterized in that: The outer surface of the high-pressure fuel pump body (1) is fitted with a sound insulation mechanism (3), and two sets of fixing mechanisms (4) are fixedly installed on the upper surface of the connecting plate (2). The plug-in end of the fixing mechanism (4) is plugged into the sound insulation mechanism (3). The sound insulation mechanism (3) includes a sound insulation shell (301), which is sleeved on the outer surface of the high-pressure fuel pump body (1). A positioning block (302) is fixedly installed on the outer surface of the sound insulation shell (301). The number of positioning blocks (302) is fixed to two. Several honeycomb grooves (303) are opened inside the sound insulation shell (301). The fixing mechanism (4) includes a limiting shell (401), which is fixedly installed on the upper surface of the connecting plate (2). A positioning block (302) is inserted into the inside of the limiting shell (401). An installation shell (402) is fixedly installed on one side of the limiting shell (401). A spring (403) is fixedly installed at one end inside the installation shell (402). A movable plate (404) is slidably connected inside the installation shell (402). One side of the movable plate (404) is fixedly connected to one end of the spring (403). A pull rod (405) is fixedly installed on one side of the movable plate (404), the pull rod (405) extends to the outer surface of the mounting shell (402), and an extension rod (406) is fixedly installed on the other side of the movable plate (404), the extension rod (406) extends to the outer surface of the mounting shell (402). One end of the extension rod (406) is rotatably connected to the extension plate (407).

2. A low noise high pressure fuel pump according to claim 1, characterized in that: One end of the extension plate (407) is fixedly installed with a plug rod (408), which is inserted into the interior of the limiting shell (401) and the positioning block (302).