Electronic control split-type fuel injector
A fuel injector and electronic control technology, which is applied in the direction of machines/engines, fuel injection devices, engine components, etc., can solve the problems of large penetration of oil particles, insufficient fuel atomization, difficulty in controlling fuel injection volume and fuel injection time Large and other problems, to achieve the effect of good atomization, improved efficiency, easy design and manufacture
Inactive Publication Date: 2012-04-04
朱小平
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Problems solved by technology
[0003] The present invention aims at the problems in the prior art that the fuel injector requires high precision during processing, the penetration of oil particles is large during fuel injection, the fuel atomization is not sufficient, and the control of fuel injection quantity and fuel injection time is relatively difficult, and provides An electronically controlled split fuel injector with a large fuel spray cone angle, good atomization effect, and easy control of processing and working conditions
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[0009] Example: such as figure 1 As shown, an electronically controlled split fuel injector is mainly composed of a housing 7, a fuel injection stress rod 4, a sealing ring 8, a fixing nut 9, a stress adjusting nut 10 and a locking nut 11. A high-speed solenoid valve is installed on the split injector; the fuel injection stress rod 4 is installed inside the casing 7, and an oil hole 6 is opened in the middle of the casing 7, and an oil passage 5 is left between the casing 7 and the stress rod 4 The lower end of the stress rod 4 is processed with a circulation groove 3 and a sealing head 1. There is an annular sealing surface 2 between the sealing head 1 and the housing 7. The oil passage 5 communicates with the annular sealing surface 2 through the circulation groove 3. The high-pressure fuel is passed through the high-speed solenoid valve. Entering the oil passage 5 of the split injector, the compression stress rod 4 produces elastic deformation, the stress rod 4 elongates, a...
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The invention relates to an electronic control split-type fuel injector. A fuel injection stress bar is arranged in the shell of the split-type fuel injector; an annular seal surface is arranged between a seal head at the lower end of the stress bar and the shell; the upper part of the stress bar is provided with a retaining nut, a stress regulating nut and a locking nut; a fuel hole is arranged in the middle part of the shell; the middle part of the valve body of the high-speed electromagnetic valve is provided with a valve core; the valve core is provided with a fuel passing slot; one side of the middle part of the valve body is provided with a fuel outlet; the fuel outlet is communicated with the middle part of the valve body and is butted and communicated with the fuel hole of the split-type fuel injector; and the other side of the valve body is provided with a high-pressure fuel inlet and a fuel return hole. When the high-speed electromagnetic valve moves up, the oil passing slot is connected across between the fuel inlet and the fuel outlet, and the high-pressure fuel is conducted and is injected from the annular seal surface of the fuel injector. Since the outlet pressure of the fuel injected by the fuel injector is high and the injecting angle is good, the atomization condition of the fuel is better and the combustion efficiency is higher.
Description
technical field [0001] The invention belongs to the technical field of fuel injectors for internal combustion engines. Background technique [0002] In the prior art, fuel injectors for internal combustion engines are divided into two categories, one is a hole injector, and the other is a pintle injector. The two types of injectors have common shortcomings. The hole injector There is an oil storage area inside, the area of the final oil injection hole is fixed, and the degree of atomization of the oil injection is affected; the oil injection area of the pintle injector is small, the spray cone angle is small, and the oil particles after atomization are concentrated, not It is conducive to the uniform mixing of oil and air; the two types of injectors require high precision in processing, and the penetration of oil particles is large when injecting oil. In order to fully burn the sprayed oil mist, the shape design of the combustion chamber is complex and the appearance Re...
Claims
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IPC IPC(8): F02M51/06
Inventor 朱小平
Owner 朱小平