The invention relates to a monitoring method for an electric vehicle electric vacuum pump and belongs to the technical field of electric vehicle vacuum pump control. According to the method, a vehicle control unit is set with three start modes; when the control unit is in a normal control mode, a vacuum pump is turned on to work when the vacuum degree of a vacuum pump booster is lower than a vacuum pump start threshold value, and the vacuum pump is turned off to stop working when the vacuum degree of the vacuum pump booster is higher than a vacuum pump closing threshold; when the control unit is in a safety control mode, different vacuum pump start or closing thresholds are determined according to different sensor faults, and the vacuum pump is controlled according to comparison results of actual vacuum degree values with the thresholds; a troubleshooting mode is started to control the vacuum pump when the vacuum pump works continuously. By means of the monitoring method for the electric vehicle electric vacuum pump, the control of a vacuum system is reasonable so as to achieve the purpose of safe driving.
Monitoring method for electric vehicle electric vacuum pump
2015-04-01
Patent
Electronic Resource
English
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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