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Component type high-pressure common rail device

A high-pressure common rail and component-based technology, which is applied in fuel injection devices, charging systems, engine components, etc., can solve problems such as low pressure stability and pressure fluctuations, so as to improve pressure stability, reduce pressure fluctuations, The effect of ensuring pressure stability

Inactive Publication Date: 2011-09-07
北京建筑工程学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to avoid the shortcomings in the above-mentioned prior art, the present invention provides a component type high-pressure common rail device to solve the problems of low pressure stability and easy pressure fluctuations in the common rail pipe

Method used

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  • Component type high-pressure common rail device
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  • Component type high-pressure common rail device

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Embodiment Construction

[0019] see Figure 1 ~ Figure 4 , a component type high-pressure common rail device, including a common rail pipe 10, a pressure limiter 6 is provided on the drain hole 5 of the common rail pipe 10, and an inner Pressure sensor 9 for chamber pressure. The common rail pipe 10 includes an inner pipe 2 and an outer pipe 1 sleeved on the inner pipe 2 and having openings at both ends; The inner peripheral surfaces of the tubes 1 are matched with each other and there is a gap fit between the two; the inner tube 2 and the outer tube 1 are provided with a circumferential limit for limiting the circumferential rotation between the inner tube 2 and the outer tube 1 device; the two ends of the outer tube 1 are fixedly sleeved with a sealing cover 3 for sealing the two ends of the outer tube 1; one end of the sealing cover 3 is a closed end, the other end of the sealing cover 3 is an open end, and the sealing cover The opening end of 3 is sleeved on the outer peripheral surface of the o...

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Abstract

The invention discloses a component type high-pressure common rail device. A common rail pipe is provided with a pressure sensor and a pressure limiter. The common rail pipe comprises an inner pipe and an outer pipe; a circumferential limit device is arranged between the inner pipe and the outer pipe; the two ends of the outer pipe are fixedly sleeved with a seal cover and the seal covers are used for sealing the two ends of the outer pipe; the circumferential surface of the common rail pipe is provided with an oil inlet and multiple oil outlets; and on the inner circumferential surface of the inner pipe, an annular inward-convex table stretching along the circumferential direction of the inner pipe is respectively arranged between the oil inlet and an oil outlet adjacent to the oil inlet and between two adjacent oil outlets. The component type high-pressure common rail device disclosed by the invention can improve the pressure stability in the common rail pipe, reduce the fluctuation of pressure, and guarantee stability of fuel injection of the high-pressure common rail system.

Description

technical field [0001] The invention relates to a component-type high-pressure common rail device, in particular to a component-type high-pressure common-rail device for a diesel engine high-pressure common-rail fuel injection system. Background technique [0002] In recent years, the country has increasingly strict requirements on diesel engines in terms of energy saving and environmental protection. In order to save energy and reduce emissions, the high-pressure common rail electronically controlled fuel injection technology, which is known for its flexible control, has become an important direction for the development of diesel engine technology. High-pressure common rail fuel injection system generally includes high-pressure oil pump, common rail pipe, electronically controlled fuel injector, various sensors and electronic control unit ECU, which does not rely on engine speed to achieve high-pressure injection, but uses public control oil passage—— The common rail pipe ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M55/02
Inventor 刘永峰秦建军仇滔杨建伟孙建民朱爱华周庆辉
Owner 北京建筑工程学院
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