The detection method of the correlation between the abnormal blow-by gas of the engine and the supercharger
A detection method and engine technology, applied in engine testing, machine/structural component testing, instruments, etc., can solve problems such as inability to clearly determine gas and leakage, and achieve the effect of speeding up troubleshooting and improving production efficiency
Active Publication Date: 2016-02-24
GUANGXI YUCHAI MASCH CO LTD
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[0006] The object of the present invention is to provide a detection method for the correlation between the abnormal blow-by gas of the engine and the supercharger, so as to overcome the shortcoming that it is impossible to clearly judge the cause of gas leakage other than the wear of the engine piston ring and cylinder liner
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[0012] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.
[0013] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.
[0014] Such as figure 1 As shown, the method of whether supercharger gas leakage of the present invention is the main cause of engine blow-by abnormality comprises the steps:
[0015] Start the engine that has failed, and use the detection equipment to detect the amount of blow-by of the engine as the first amount of blow-by;
[0016] Stop the engine, pull out the oil return pipe of the engine supercharger from the oil re...
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The invention discloses a method for detection of the correlation between blow-by abnormity of an engine and a supercharger. The method comprises the following steps that the engine with a failure is started, and the blow-by amount of the engine is detected through a detection device and serves as the first blow-by amount; the engine is stopped, an oil return pipe of the supercharger of the engine is pulled out of an oil return hole, and then the oil return hole is blocked through a plug; the engine is started again, and the blow-by amount of the engine is detected through the detection device and serves as the second blow-by amount; the correlation between the blow-by abnormity of the engine and the supercharger is judged, and if the second blow-by amount is smaller than the first blow-by amount, it is determined that the blow-by abnormity of the engine is related to gas leakage of the supercharger; otherwise, it is determined that the blow-by abnormity of the engine is unrelated to gas leakage of the supercharger, and then the wear conditions of a piston ring and a cylinder sleeve of the engine are checked. According to the method, by means of changing the failure removal order, the correlation between the blow-by abnormity of the engine and gas leakage of the supercharger is judged rapidly, the failure handing speed can be increased, and production efficiency can be improved.
Description
technical field [0001] The invention relates to the field of engines, in particular to a method for detecting the correlation between engine blow-by abnormalities and superchargers. Background technique [0002] Abnormal engine blow-by gas directly affects the performance of the engine. If the amount of blow-by gas exceeds the technical requirements, the output power of the engine will decrease, the fuel consumption of engine oil will exceed the standard, and environmental pollution and other adverse consequences will be caused. There are many reasons for abnormal engine blow-by. The maintenance personnel will first judge whether the main cause is the wear of the engine piston ring and cylinder liner. However, the engine needs to be disassembled, and the operation is complicated, time-consuming and labor-intensive. [0003] Gas leakage inside the supercharger is another reason. When the turbocharger is working, the air pressure at the compressor end, the gas pressure at the...
Claims
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IPC IPC(8): G01M15/00
Inventor 梁哲何炳才
Owner GUANGXI YUCHAI MASCH CO LTD