Oil injector with double air inlet channels

A fuel injector and double-injection technology, which is applied in the direction of fuel injection control, machine/engine, fuel injection device, etc., can solve the problems of unfavorable fuel consumption, reduction, engine power waste, etc., to achieve supply, fast response speed, Flexible and changeable fuel injection schedule

Active Publication Date: 2017-12-26
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under such a high injection pressure, the atomization effect of fuel is greatly improved, and simply increasing the injection pressure will cause a waste of engine power, which is not conducive to the reduction of fuel consumption

Method used

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  • Oil injector with double air inlet channels
  • Oil injector with double air inlet channels
  • Oil injector with double air inlet channels

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0026] In order to realize the flexible switching of the two injection pressures in a single injection cycle, such as figure 1 As shown, a fuel supply system for a diesel engine includes a fuel tank 1, a low-pressure fuel pipe 2, a high-pressure fuel pump 3, a high-pressure fuel pipe 4, a high-pressure common rail pipe 5, a medium-low pressure common rail pipe 8, an electromagnetic switch valve 6, and double oil inlet nozzles. Oil tank 7, check valve with orifice 9, ECU (Electronic Control Unit) 10 and electric control wiring harness 11;

[0027] The fuel tank 1 is connected to the high-pressure fuel pump 3 through the low-pressure fuel pipe 2; the high-pressure fuel pump 3 is respectively connected to the high-pressure common rail pipe 5 and the medium-low pressure common rail pipe 8 through the high-pressure fuel pipe 4; It is supplied to the high-pressure o...

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PUM

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Abstract

The invention provides an oil injector with double air inlet channels. The oil injector comprises an oil injector body, a first oil inlet channel, a second oil inlet channel, an electromagnet, an armature, an armature rod, a ball seat, a control valve seat, a first spring, a ball valve, a throttling hole plate, a control piston, a second spring, an ejector rod, a needle valve, a needle valve body, a transition block, a first oil inlet hole, a second oil inlet hole and an oil injection nozzle, wherein the oil injector body, the transition block and the needle valve body are assembled from top to bottom into a whole the first oil inlet channel and the second oil inlet channel are positioned in the oil injector body, the transition block and the needle valve body; in the down direction, the first oil inlet channel and the second oil inlet channel both communicate with the oil injection hole channel of the oil injection nozzle; and in the up direction, the first oil inlet channel and the second oil inlet channel correspondingly communicate with a first oil inlet throttling hole and a second oil inlet throttling hole which are formed in the throttling hole plate. The oil injector can be applied to a diesel engine fuel oil supply system of which the oil injection rate is variable and adjustable at any time; the injection demand at different pressure can be met; and accordingly, the engine combustion heat release rate can be improved and the emission can be reduced.

Description

technical field [0001] The invention relates to the technical field of internal combustion engines, in particular to a fuel injector for an electronic injection diesel engine. Background technique [0002] With the depletion of petroleum resources and the increasingly stringent emission requirements, reducing fuel consumption and reducing emissions has become the main research direction of new engine technology. In order to achieve full combustion, it is necessary to improve the atomization effect of the fuel, and increasing the injection pressure becomes the main means. With the development of high-pressure common rail technology, the injection pressure has been greatly improved. The high-pressure common rail system launched by BOSCH, DENSO and other companies has an injection pressure above 250MPa. Under such a high injection pressure, the atomization effect of fuel is greatly improved, and simply increasing the injection pressure will cause a waste of engine power, whic...

Claims

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Application Information

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IPC IPC(8): F02M51/00F02M51/06F02M55/00F02M55/02F02M61/16F02M61/10F02D41/30
CPCF02D41/3082F02M51/005F02M51/06F02M55/00F02M55/002F02M55/025F02M61/10F02M61/16
Inventor 汪祥本俞建达刘文超黄俊徐广兰董庆远雷超胡凯耀杨翔宇
Owner CHINA FIRST AUTOMOBILE
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