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High-flow low-noise fuel pump

A low-noise, fuel pump technology, applied in the direction of pumps, pump components, pump control, etc., can solve the problems of high frequency, reduce friction, improve pumping efficiency, and reduce leakage

Pending Publication Date: 2021-03-12
SHANGHAI JTR AUTOMOTIVE COMPONENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In addition, the oil outlet plate, internal and external gear pairs and oil inlet plate of the traditional gear pump are all made of powder metallurgy metal materials; the oil inlet plate, oil outlet plate, rollers, star wheel, and fixed ring of the traditional roller pump are all powder metallurgy Metal materials; during operation, due to the mutual friction of similar materials, high-frequency sounds are generated, which is unacceptable to the drivers and passengers of passenger cars

Method used

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Embodiment approach

[0037] In further embodiments of the present invention, please continue to refer to Figure 1 to Figure 4 As shown, the middle part of the oil outlet plate 1 is provided with an inner hole penetrating the pump chamber 3, the inner wall of the oil outlet plate 1 is provided with an inner fixed ring 13, and the outer periphery of the oil outlet plate 1 is provided with an outer fixed ring 14. 1. The pump cavity 3 is formed between the inner fixed ring 13, the outer fixed ring 14, and the oil inlet plate 1. The inner circumference of the star wheel 5 cooperates with the outer circumference of the inner fixed ring 13, and the outer circumference of the outer fixed ring 14 and the outer circumference of the outer fixed ring 14 Cooperate with the activities in the inner week.

[0038] In a further embodiment of the present invention, a guide tongue 15 is provided on the oil outlet 4 of the oil outlet plate 1 and the oil inlet of the oil inlet plate 2 .

[0039] In a further embodim...

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Abstract

The invention discloses a high-flow low-noise fuel pump. The high-flow low-noise fuel pump comprises an oil outlet plate and an oil inlet plate mounted on the oil outlet plate, wherein a pump cavity is formed between the oil outlet plate and the oil inlet plate; an oil outlet is formed in the oil outlet plate; an oil inlet is formed in the oil inlet plate; a star wheel, a plurality of rollers anda gear ring are sequentially arranged in the pump cavity in the radial direction of the oil outlet plate from inside to outside in a transmission manner; a plurality of grooves are formed in the outerperiphery of the star wheel; a plurality of concave teeth are arranged on the inner periphery of the gear ring; the grooves and the concave teeth are arranged in odd-even numbers; the rollers are respectively arranged in the grooves; the side walls of the rollers are respectively propped against the inner walls of the grooves; and the side walls of the rollers are respectively propped against theinner periphery of the gear ring; and a volume cavity is formed among the outer periphery of the star wheel, the inner periphery of the gear ring and every two adjacent rollers. The high-flow low-noise fuel pump is high in assembling efficiency, good in process stability and low in pump body impact noise.

Description

technical field [0001] The invention relates to the technical field of fuel pumps used in fuel supply systems for passenger cars, in particular to a high-flow and low-noise fuel pump. Background technique [0002] Electric fuel pump is a key part of automobile fuel supply system. According to the existing technology, its structure mainly adopts turbine, roller and gear structure. The viscosity of alcohol gasoline is small, and there is little difference in viscosity between low temperature and high temperature, so the pumps of the three structures mentioned above can be used, while diesel oil has a higher temperature (up to 100 °C or more) when it works, and at the same time It has a high viscosity at low temperature, and even appears as gel, so the traditional turbo fuel pump is not enough to meet the requirements of diesel oil at low temperature. [0003] In order to solve the temperature characteristics of diesel pumps, more roller pumps and gear pumps are used. Since th...

Claims

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Application Information

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IPC IPC(8): F04C2/113F04C15/00F04C15/06F02M37/04
CPCF02M37/04F04C2/084F04C2/086F04C2/113F04C15/00F04C15/0057F04C15/0088F04C15/06F04C2210/1044F04C2240/20F04C2240/30F04C2270/13
Inventor 史俊鸿
Owner SHANGHAI JTR AUTOMOTIVE COMPONENT CO LTD