High-pressure in-line plunger pump and high-pressure common-rail fuel injection system

A plunger pump and in-line technology, applied in fuel injection pumps, fuel injection devices, charging systems, etc., can solve the problems of high processing difficulty, poor low-speed start-up performance, and high cost

Pending Publication Date: 2021-05-11
钧风电控科技泰州有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide a high-pressure in-line plunger pump and a high-pressure common rail fuel injection system to at least solve the problem

Method used

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  • High-pressure in-line plunger pump and high-pressure common-rail fuel injection system
  • High-pressure in-line plunger pump and high-pressure common-rail fuel injection system

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Embodiment Construction

[0026] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the specific embodiments described in the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the scope of the concept of the present invention.

[0027] refer to figure 1 and figure 2 , this embodiment provides a high-pressure in-line plunger pump, which is mainly used in a high-pressure common rail fuel injection system, including: a pump body part 1, and a fuel delivery pump 3 installed on the pump body part 1, an eccentric drive mechanism, a column Plug coupler 14, oil valv...

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Abstract

The invention discloses a high-pressure in-line plunger pump. The high-pressure in-line plunger pump comprises a pump body component, and further comprises an oil delivery pump, an eccentric driving mechanism, a plunger and barrel assembly, an oil valve component, an oil outlet valve, an oil control valve tightening cap and an oil inlet metering valve which are mounted on the pump body component, wherein the eccentric driving mechanism drives the plunger and barrel assembly to do reciprocating motion in the pump body component, high-pressure oil output by the oil delivery pump passes through the oil inlet metering valve and then enters a high-pressure cavity formed by the oil valve component and the plunger and barrel assembly, and through the reciprocating motion of the plunger and barrel assembly, high-pressure oil flows out of the oil outlet valve and the oil control valve tightening cap in sequence. The invention further discloses a high-pressure common-rail fuel injection system which comprises the high-pressure in-line plunger pump.

Description

technical field [0001] The invention relates to a plunger pump, in particular to a high-pressure in-line plunger pump and a high-pressure common rail fuel injection system. Background technique [0002] With the rapid development of electronic control technology and stricter emission regulations, the electronically controlled high-pressure common rail fuel injection system for diesel engines has become one of the development trends of modern diesel engine technology. The diesel engine electronically controlled high-pressure common rail fuel injection system can accurately and flexibly control the fuel injection quantity, fuel injection timing and injection pressure of the diesel engine, mainly depending on the plunger pump used. However, the existing plunger pumps used in electronically controlled high-pressure common rail fuel injection systems have the problems of poor usability to fuel impurities, affecting the service life of the product, high processing difficulty, high...

Claims

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Application Information

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IPC IPC(8): F02M59/04F02M59/10F02M59/46F02M59/36F02M59/44F02M59/48F02M55/02F02M37/44F04B53/06
CPCF02M55/025F02M59/04F02M59/102F02M59/36F02M59/44F02M59/46F02M59/48F04B53/06F02M37/44
Inventor 解芳奚阳于建锋臧广辉潘慧于春朝白阳李世明
Owner 钧风电控科技泰州有限责任公司
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