Parallel type low-slope pressure character pressure adjusting device of fuel pump

A technology of pressure characteristics and pressure regulation, applied in the direction of charging system, liquid fuel feeder, engine components, etc., can solve the problems of affecting fuel injection, large pressure changes, unstable fuel system pressure, etc., to ensure system pressure, Solve the effect of large flow slope

Inactive Publication Date: 2017-05-10
CHONGQING WANLI LIANXING IND GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the electric fuel pump uses a single valve to adjust the pressure. The principle of the single valve is simple in structure and low in cost. The disadvantage is that when the flow rate of the fuel system changes, the pressure changes greatly, resulting in unstable pressure in the fuel system and affecting fuel injection.

Method used

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  • Parallel type low-slope pressure character pressure adjusting device of fuel pump

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Experimental program
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Embodiment 1

[0016] Such as figure 1 As shown, the fuel pump parallel low-slope pressure characteristic pressure regulating device of the present invention is composed of a regulator mounting seat 1, a valve housing 2, a valve core 3, a pressure regulating spring 4, a spring support seat 5 and an O-ring 6 and other components. .

[0017] At least two pressure regulating valve installation cavities 1a are arranged side by side in the regulator installation seat 1, and two are selected here. An oil inlet passage 1b and an oil outlet passage 1c communicating with each pressure regulating valve installation chamber 1a are arranged on the regulator mounting seat 1, the oil inlet passage 1b and the oil outlet passage 1c are arranged oppositely, and the oil inlet passage 1b is located on the left side, The oil outlet passage 1c is located on the right side, all the oil inlet passages 1b are located on the same side of the regulator mounting seat 1, and a pressure regulating valve is installed in...

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Abstract

The invention discloses a parallel type low-slope pressure character pressure adjusting device of a fuel pump. The parallel type low-slope pressure character pressure adjusting device comprises an adjuster installing base (1). At least two pressure adjusting valve installing cavities (1a) are formed in the adjuster installing base (1) side by side. The adjuster installing base (1) is provided with oil inlet channels (1b) and oil outlet channels (1c), wherein each oil inlet channel (1b) and the corresponding oil outlet channel (1c) communicate with the corresponding pressure adjusting valve installing cavity (1a). Each oil inlet channel (1b) is opposite to the corresponding oil outlet channel (1c). The oil inlet channels (1b) are located on the same side of the adjuster installing base (1), and each pressure adjusting valve installing cavity (1a) is internally provided with a pressure adjusting valve. The parallel type pressure adjusting device is adopted for well solving the problem that the flow and slope are large. When flow is greatly changed, the pressure is slightly changed, and accordingly system pressure stability is guaranteed.

Description

technical field [0001] The invention relates to a fuel pump pressure regulator, in particular to a fuel pump parallel low-slope pressure characteristic pressure regulator. Background technique [0002] The fuel pump pressure regulator is one of the common components of the fuel injection system of EFI vehicles. Function: A component that guarantees the normal fuel pressure in the oil circuit of the automobile. [0003] At present, electric fuel pumps use a single valve to adjust the pressure. The principle of the single valve is simple in structure and low in cost. The disadvantage is that when the flow rate of the fuel system changes, the pressure changes greatly, resulting in unstable pressure in the fuel system and affecting fuel injection. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a parallel low-slope pressure characteristic pressure regulator. [0005] The technical solution of the present invention ...

Claims

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Application Information

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IPC IPC(8): F02M37/00F02M37/04
CPCF02M37/0029F02M37/0052F02M37/04
Inventor 杜春雷李阳刘诗会
Owner CHONGQING WANLI LIANXING IND GROUP
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