Preparation method of wear-resistant control valve for fuel injection system
A fuel injection system and control valve technology, which is applied in fuel injection devices, charging systems, mechanical equipment, etc., can solve problems such as wear and corrosion at valve ports, improve wear resistance and corrosion resistance, and prolong service life Effect
Active Publication Date: 2017-11-28
STARARC COATING TECH SUZHOU
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Problems solved by technology
The control valve plays a vital role in the injection system. The existing control valve is in constant contact with the valve ball, and at the same time, it is also subject to fuel injection, which easily leads to wear and corrosion at the valve port
Method used
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Embodiment Construction
[0018] Such as figure 1 , the wear-resistant control valve for the fuel injection system of the present invention, the control valve includes a valve body 1 and a valve ball (not shown in the figure), and the cross section of the valve body 1 is T-shaped. The valve ball is in contact with the valve body 1, so that the control valve can communicate and close the medium in the valve body. The upper end 2 of the valve body is provided with a conical groove 3, the valve ball is placed in the conical groove 3 of the valve core, and the center of the valve body is provided with an injection port 4, which is in line with the conical The grooves 3 are coaxial, the cross-section of the tapered groove 3 is triangular, and the groove surface of the tapered groove 3 is coated with a wear-resistant layer. The wear-resistant layer is composed of a metal bottom layer and at least two CrN nanometer layers placed on the metal bottom layer. The thickness of the metal bottom layer is 0.1 μm-1 ...
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Abstract
The invention discloses a wear-resistant control valve used in a fuel injection system. The control valve includes a valve body and a valve ball. The cross section of the valve body is T-shaped. The valve ball is in contact with the valve body, so that The control valve carries out the circulation and closing of the medium in the valve body. The upper end of the valve body is provided with a conical groove, the valve ball is placed in the conical groove of the valve core, and the center of the valve body is provided with an injection port. The injection port is coaxial with the tapered groove, the cross section of the tapered groove is triangular, and the groove surface of the tapered groove is coated with a wear-resistant layer. The outstanding effects of the invention are: the wear resistance and corrosion resistance of the control valve in the fuel injection system are improved, and the service life of the control valve is greatly extended.
Description
technical field [0001] The invention relates to a fuel injection system control valve and a preparation method thereof, in particular to a wear-resistant control valve for the fuel injection system. Background technique [0002] The fuel injection system refers to a fuel supply device that uses a fuel injector to directly inject a certain amount of fuel into the cylinder or intake passage under a certain pressure. According to the different types of injected fuel, it can be divided into gasoline injection system, diesel injection system, gas fuel injection system, etc. According to the different control methods, it can be divided into mechanical control, electronic control and electromechanical hybrid control. The control valve plays a vital role in the injection system. Because the existing control valve is constantly in contact with the valve ball and is also injected by fuel, it is easy to cause wear and corrosion at the valve port. Contents of the invention [0003] ...
Claims
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IPC IPC(8): F02M61/04F02M61/16C23C14/28C23C14/06
Inventor 钱涛焦飞
Owner STARARC COATING TECH SUZHOU