Oil control valve (OCV) detection method

Abstract

The invention discloses an oil control valve (OCV) detection method which comprises the following steps: performing operating detection on an engine by virtue of a hot-firing test bench rack; electrifying the oil control valve (OCV) while operating the engine, observing an operating state of the engine, stopping electrifying the OCV, and observing the operating state of the engine; and judging that the OCV is normal when the engine jitters during electrification and the jittering disappears during power failure, and otherwise, judging that the OCV fails. The oil control valve (OCV) detection method disclosed by the invention has the advantages that the operation of the engine is detected on the hot-firing test bench rack, the OCV is actively opened by inputting a voltage of 12V, then the input of the 12V voltage is closed, and the engine jittering condition while connecting the voltage of 12V and after closing the 12V voltage is observed so as to judge failure conditions of the OCV, sothat the defect that the OCV cannot be detected by the hot-firing test bench rack of the engine is overcome. Moreover, the method is simple to operate and high in practicability.

Description

technical field [0001] The invention relates to the field of engine detection, in particular to a method for detecting an OCV engine oil control valve. Background technique [0002] The engine was assembled and rolled off the assembly line without any consideration for the assembly technology and the quality of parts. Through the ignition and hot test of the engine, it is possible to check whether the engine has abnormal noise, water leakage, oil leakage and other intuitive phenomena, but the OCV oil control valve is not affected during the whole process. Can detect whether there is a stuck phenomenon; [0003] Due to the increase in engine production capacity, the production capacity planning of the hot test bench is basically consistent with the assembly line. Under the condition of ensuring the production capacity of the engine, there are specific regulations on the hot test conditions of the engine, and all must be guaranteed. The quality of the production engine. [0...

AI Technical Summary

Problems solved by technology

Therefore, under the idling speed and high warm-up conditions running on the hot test bench, the OCV will not work, so it is impossible to check whether the OCV oil control valve can be opened and closed normally.

Then the engine is installed in the whole vehicle at the factory. When the specified working condition is reached, if the OCV oil control valve is not opened, the timing change and the control of the intake air volume cannot be realized, and the engine cannot reach the optimal working condition.

The car will experience poor acceleration, insufficient power, flameout and other adverse phenomena

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