Fuel injector micro leakage test and seal test system

A leak test and test system technology, applied in the direction of measuring the acceleration and deceleration rate of fluid, using liquid/vacuum for liquid tightness measurement, etc. The effect of high test accuracy

Active Publication Date: 2016-11-23
WUXI VOCATIONAL & TECHN COLLEGE
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Problems solved by technology

[0003] The leakage of the fuel injector is extremely small in many cases, and the traditional method is difficult to detect or the detection cost is relatively high. To solve this

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  • Fuel injector micro leakage test and seal test system

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Embodiment Construction

[0012] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.

[0013] see figure 1 , the specific embodiment adopts the following technical solutions: it includes a fuel supply system, a pressure regulation system, a test system and a control system. The fuel supply system includes a fuel tank 1, an electric oil pump 2, a heat exchanger 5, a fuel filter 6, and an oil pipe 8; the pressure regulation system includes an energy storage tank 3, a pressure regulator 4, and a self-operated pressure regulator 7 The test system includes solenoid valve A9, pressure sensor A10, oil rail 11, differential pressure sensor 12, standard pressure cha...

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Abstract

The invention provides a fuel injector micro leakage test and seal test system and relates to the technical field of an engine part test device. A fuel tank is connected with an electric fuel pump, and provides fuel to an energy storage tank through the electric fuel pump, thereby ensuring sufficient fuel in a fuel path, and meanwhile, playing a certain pressure stabilization role; a pressure regulator is connected with an outlet of the energy storage tank; the pressure regulator carries with a fuel return system to ensure stable primary pressure in the fuel path and ensure the redundant fuel to the fuel tank; a heat exchanger is connected with the pressure regulator, and is used for ensuring change range of temperature of the fuel to be always kept within +/-1 degree in the test process; a fuel filter is connected with the heat exchanger, and is used for filtering impurities in the fuel; and a self-reliant pressure regulator is connected with the fuel filter, and is used for providing a certain pressure of fuel to a fuel rail and a standard pressure chamber, and controlling opening and closing of the fuel path between the self-reliant pressure regulator and the fuel rail through a solenoid valve A. The fuel injector micro leakage test and seal test system is fast in response speed, high in test precision, good in reliability and simple and quick to use.

Description

technical field [0001] The invention relates to the technical field of engine component testing devices, in particular to a micro-leakage testing and sealing test system for fuel injectors. Background technique [0002] Gasoline Direct Injection (GDI) technology injects gasoline directly into the cylinder, and gasoline evaporation cools the air in the cylinder, which can increase the compression ratio of the gasoline engine and improve the thermal efficiency of the gasoline engine. The fuel injection pressure of the GDI gasoline engine is relatively high, and the gasoline oil is atomized well, which can ensure the instantaneous vaporization of micron-sized droplets, so that enough gasoline injected in a short period of time can form a good combustible mixture. In-cylinder direct injection technology is one of the effective measures to reduce gasoline engine fuel consumption, improve fuel economy, and reduce pollutant emissions. With the increasingly stringent emission regula...

Claims

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Application Information

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IPC IPC(8): G01M3/26
CPCG01M3/26
Inventor 王忠冯渊张美娟陈珣
Owner WUXI VOCATIONAL & TECHN COLLEGE
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