Method for detecting complete machine matching performance of oil sprayer
An inspection method and fuel injector technology, applied in the direction of machines/engines, instruments, mechanical equipment, etc., can solve the problems of low measurement accuracy and high cost, and achieve the effects of improving measurement accuracy, facilitating collection, and reducing testing costs
Active Publication Date: 2020-02-28
CHINA NORTH ENGINE INST TIANJIN
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Problems solved by technology
[0003] In view of this, the present invention aims to propose a method for checking the performance of the fuel injector matching the whole machine to solve the problems of low measurement accuracy and high cost of the existing fuel injector working state and performance law
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[0021] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0022] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be interpreted...
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The invention provides a method for detecting the complete machine matching performance of an oil sprayer. The to-be-detected oil sprayer is involved, a vibration sensor is installed at the inlet of the to-be-detected oil sprayer, one end of the to-be-detected oil sprayer is installed on an oil sprayer performance tester and the other end of the to-be-detected oil sprayer is connected to a test common rail pipe during state calibrating, and the vibration sensor is connected to an oil sprayer performance testing electronic control unit through signals and collects normal work vibration signalsof the oil sprayer; during complete machine matching, one end of the to-be-detected oil sprayer is installed on a diesel engine cylinder, the other end of the to-be-detected oil sprayer is connected to a diesel engine high-pressure oil pipe, and the vibrator sensor is connected to a diesel engine electronic control unit through signals and collects vibration signals of the oil sprayer; the normalwork vibration signals of the oil sprayer are compared with the vibration signals, so the working state and the performance rule of the to-be-detected oil sprayer during a complete machine matching test are detected. By means of the method for detecting the complete machine matching performance of the oil sprayer, the testing precision can be improved and the testing cost can be reduced without influencing the airtightness and performance of the oil sprayer.
Description
technical field [0001] The invention belongs to the field of engines, and in particular relates to a method for checking the performance of a fuel injector matching complete machine. Background technique [0002] Generally, the working state and performance of the fuel injector cannot be directly checked when the fuel injector of a diesel engine is matched with the performance test of the whole machine. When electronically controlling the diesel engine, it is impossible to directly detect the working status of each injector when the whole machine is matched. In the test of the fuel supply combustion system, some use the pressure sensor in the cylinder to measure the deflagration moment. This test method is easily affected by the complex combustion process of the mixture of air, fuel and residual exhaust gas in the cylinder, which interferes with the injector itself. Measurement of working conditions. Some use a hole in the oil tank of the fuel injector and place a pressure...
Claims
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CPCF02M65/00
Inventor 顾娇娇吴小军况涪洪徐春龙何双毅奚星孙树平李亚芬张丽
Owner CHINA NORTH ENGINE INST TIANJIN