Electronic control oil sprayer for injection valve

An electronically controlled fuel injection and fuel injector technology, which is applied to fuel injection devices, machines/engines, charging systems, etc., can solve problems such as difficult processing and difficulty in processing throttle cone holes.

Inactive Publication Date: 2013-04-17
WUXI KIPOR POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In electronically controlled fuel injectors, the seal between the pilot valve seat and the throttle orifice is very important, especially the seal between the valve core and the throttle hole in the throttle orifice. , the machining of the throttle cone is very difficult, and it is difficult to process

Method used

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  • Electronic control oil sprayer for injection valve
  • Electronic control oil sprayer for injection valve
  • Electronic control oil sprayer for injection valve

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with specific examples.

[0017] As shown in the figure, the electronically controlled fuel injector of the injection valve has a fuel injector body oil hole 11.1 in the fuel injector body 11, and the fuel injector body oil hole 11.1 and the oil inlet port on the fuel injector body 11 Connected, the injector body 11 is provided with a lining ring 5 and a pilot valve seat 6, the pilot valve seat 6 is located below the lining ring 5, and the pilot valve seat 6 is provided with a pilot valve seat oil hole 6.1 and an armature rod guide hole , a throttle orifice 9 is provided below the guide valve seat 6, and a control chamber 28, an oil inlet orifice 27, a throttle orifice oil inlet 29, and a connecting oil hole 30 are provided on the throttle orifice 9. , the oil return orifice 24 and the oil hole 25 under the orifice plate, the aperture of the oil inlet orifice 27 is smaller than the aperture of the oil ...

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Abstract

The invention relates to an electronic control oil sprayer for a diesel engine injection valve. An oil sprayer body oil hole is arranged in an oil sprayer body and communicated with an oil inlet port positioned on the oil sprayer body, a bushing ring and a guiding valve seat are arranged in the oil sprayer body, the guiding valve seat is located below the bushing ring and provided with a guiding valve seat oil hole, and a throttling orifice plate is arranged below the guiding valve seat and provided with a control chamber, an oil inlet throttling orifice, a throttling orifice plate oil inlet hole, a connecting oil hole, an oil returning throttling orifice and a throttling orifice plate oil discharging hole. A control piston sleeve is arranged below the throttling orifice plate and provided with a control piston sleeve oil hole, the lower end face of a control flat valve is a plane, and the upper end face of the throttling orifice plate is provided with a pressure relief ring groove, an outer ring groove and a flow guiding groove. The outer ring groove is sleeved outside the pressure relief ring groove, and the pressure relief ring groove is selectively communicated with the oil returning throttling orifice. The electronic control oil sprayer reduces processing difficulty and improves tightness and production rate.

Description

technical field [0001] The invention relates to an electronically controlled fuel injector for a diesel engine, in particular to an electronically controlled fuel injector for an injection valve. Background technique [0002] Compared with the traditional mechanical fuel system, the electronically controlled high-pressure common rail fuel injection system has significant advantages such as reducing engine noise, reducing emissions, improving economy, and high reliability, so it has been widely used abroad. In China, due to the continuous improvement of emission regulations, the high-pressure common rail system has become an inevitable choice. [0003] In the high-pressure common rail system, the electronically controlled fuel injector is the most critical and complex part. It controls the needle valve body through the opening and closing of the solenoid valve according to the signal sent by the ECU, and injects the high-pressure fuel in the common rail pipe. into the combus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M51/06F02M61/10
Inventor 肖亨琳张传斌
Owner WUXI KIPOR POWER CO LTD
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