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Oil inlet metering valve of split type cone valve structure and electric control fuel oil supply system

An oil inlet metering valve, split type technology, applied in the testing of machines/structural components, charging systems, measuring devices, etc., can solve the problem of low flow control accuracy of ball valves, poor stability of rail pressure fluctuations, and small fit gaps of slide valves, etc. problems, to achieve the effect of ensuring structural strength requirements, enhancing airtightness, and meeting airtightness requirements

Pending Publication Date: 2021-03-12
钧风电控科技泰州有限责任公司
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0007] The purpose of the embodiments of the present invention is to propose a fuel inlet metering valve with a split cone valve structure and an electronically controlled fuel system, so as to at least solve the problem of low flow control accuracy of the ball valve in the small flow section and easy jamming due to the small matching clearance of the slide valve in the related art. The problem of poor stability of rail pressure fluctuations caused by hysteresis

Method used

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  • Oil inlet metering valve of split type cone valve structure and electric control fuel oil supply system

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Embodiment Construction

[0023] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0024] Such as figure 1 As shown, the oil inlet metering valve with a split poppet valve structure includes: a valve body assembly, the valve body assembly includes a valve body, a driving member and a flow control assembly, and the valve body is provided with an oil inlet and outlet valve. The valve body includes a valve cover 01, a pole shoe 03, a magnetic isolation ring 09 and a sleeve 11. One end of the pole shoe 03 is sealed by the valve cover 01, and the other end of the pole shoe 03 and the sleeve 11 are sealed by The magnetic isolation ring 09 is fixedly connected to form a closed space, the driving part and the flow control assembly are installed in the closed space, and the driving p...

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Abstract

The invention discloses an oil inlet metering valve of a split type cone valve structure. The oil inlet metering valve comprises a valve body assembly, and a coil assembly, wherein the valve body assembly comprises a valve body, a driving piece and a flow control assembly, an oil inlet and outlet opening is formed in the valve body, the valve body comprises a valve deck, a pole shoe, a magnetism isolating ring and a sleeve, one end of the pole shoe is sealed through the valve deck, the other end of the pole shoe is fixedly connected with the sleeve through the magnetism isolating ring to forma closed space, the driving piece and the flow control assembly are mounted in the closed space, and the driving piece abuts against the flow control assembly; and the coil assembly is arranged outside the closed space in a sleeving mode and drives the driving piece to move. The invention further discloses an electronic control fuel oil supply system which comprises the oil inlet metering valve ofthe split type cone valve structure.

Description

technical field [0001] The invention relates to the field of fuel-inlet metering valves, in particular to an oil-inlet metering valve with a split cone valve structure and an electronically controlled fuel supply system. Background technique [0002] The fuel inlet metering valve is used in the electronically controlled fuel system of the diesel engine. According to the ECU signal, the movement of the spool is controlled by adjusting the PWM signal, and the amount of fuel entering the plunger chamber of the high pressure fuel pump is adjusted. [0003] Most of the existing solenoid valves adopt a slide valve structure, and the machining of the piston pair is difficult and costly. It needs to be selected during assembly, the efficiency is low, and the guide gap is small, which is easy to cause sticking. The control of the small flow section of the ball valve structure is unstable, resulting in poor rail pressure stability and affecting the fuel injection effect. [0004] The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M63/00F02M61/18F02M61/16F02M65/00
CPCF02M61/16F02M61/18F02M63/0017F02M65/001
Inventor 辛超超于建锋徐小松刘洋秦龙潘慧
Owner 钧风电控科技泰州有限责任公司
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