Control method for electronic vacuum pump and computer readable storage medium

Abstract

The invention discloses a control method for an electronic vacuum pump and a computer readable storage medium. The control method comprises the following steps of determining an switch-on threshold and a switch-off threshold of the electronic vacuum pump; obtaining the vacuum degree in a vacuum booster; responding to the situation that the vacuum degree in the vacuum booster is lower than the switch-on threshold, switching on the electronic vacuum pump and starting timekeeping; responding the situation that it is detected that the continuous working time of the electronic vacuum pump is longerthan or equal to a first preset time and the vacuum degree in the vacuum booster is lower than the switch-off threshold, switching off the electronic vacuum pump, and each time when it is detected that a brake pedal is stepped down, controlling the electronic vacuum pump to continuously work for a second preset time, and then switching off the electronic vacuum pump, wherein the first preset timeis longer than the second preset time. According to the work time of the electronic vacuum pump, whether the electronic vacuum pump is in a high-altitude area is judged, and therefore, the problem that the electronic vacuum pump runs on and on in the high-altitude area to cause burnout is avoided.

Description

technical field [0001] The invention belongs to the technical field of vacuum pump control, and in particular relates to a control method of an electronic vacuum pump and a computer-readable storage medium. Background technique [0002] The control method of the existing electronic vacuum pump: [0003] Such as figure 1 As shown, the vehicle controller 5 monitors the vacuum degree of the vacuum booster 3 through the relative vacuum degree sensor 4 . The vehicle controller 5 controls the electronic vacuum pump 1 to work according to the vacuum degree value of the vacuum booster 3 to extract air inside the vacuum booster 3 . The vacuum booster 3 is connected to the electronic vacuum pump 1 through the one-way valve 2 . [0004] Such as figure 1 As shown, the internal vacuum of the vacuum booster 3 is consumed during braking. When the vehicle controller 5 detects that the vacuum degree is insufficient through the relative vacuum sensor 4 and reaches the opening threshold of...

AI Technical Summary

Problems solved by technology

[0005] The existing electronic vacuum pump control method has the following problems: the difference between the atmospheric pressure in the plain area and the high altitude area is large, and the vehicle controller can only monitor a fixed threshold value through the relative vacuum sensor

The opening and closing values ​​of the atmospheric pressure calibration in the plain area cannot meet the high altitude area, that is, the closing threshold value in the high altitude area is often lower than the opening threshold value in the plain area, so the electronic vacuum pump keeps running constantly in the high altitude area, causing the electronic vacuum pump to be blocked. burn out

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