Automobile vacuum pump performance detecting method and device
A detection method and technology of vacuum pumps, which are applied in pump testing, liquid variable displacement machinery, machines/engines, etc., can solve the problems that the performance of automotive vacuum pumps cannot be evaluated, and the quality of automotive vacuum pumps cannot be guaranteed.
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[0082] like figure 1 and 2 Shown, the automobile vacuum pump performance detection method of the present invention, setting the suction pipe internal diameter of tested automobile vacuum pump is 8mm, and the lubricating oil of automobile vacuum pump is 10W-30, and the pressure of lubricating oil is 440kPa ± 10kPa, and the temperature of lubricating oil is 75 ℃±5℃, the ambient temperature is 10℃~38℃, and the volume of the vacuum cylinder is 10L. The detection method includes the following steps:
[0083] Step 1, vacuum performance testing, the specific steps are:
[0084] (1-1) Connect the vacuum pump of the car under test to the test device, close the pressure regulating valve 7 connected to the vacuum cylinder 5, so that the pressure of the vacuum cylinder 5 is the same as the ambient atmospheric pressure;
[0085] (1-2) Start the lubricating oil pump 8 of the automobile vacuum pump, and then start the driving device of the automobile vacuum pump, so that the driving shaft ...
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