Plateau control method for vacuum system of new energy electric vehicle

A technology of vacuum system and control method, which is applied in the direction of brakes, vehicle components, brake transmission devices, etc., can solve the problem that the vacuum system cannot meet the required vacuum degree, and achieve the effect of increasing the vacuum degree and improving the tactile feeling

Inactive Publication Date: 2021-12-03
广西宁达汽车科技有限公司
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Problems solved by technology

[0003] Based on this, it is necessary to address the existing technical problems and provide a plateau control method for the vacuum system of new energy electric vehicles, which solves the problem of the vacuum degree that the vacuum system in the plateau area cannot meet the demand through the control strategy that changes according to the altitude

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  • Plateau control method for vacuum system of new energy electric vehicle
  • Plateau control method for vacuum system of new energy electric vehicle

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Embodiment Construction

[0048] In order to further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0049] Such as figure 1 , 2 Shown:

[0050] 1. A plateau control method for a vacuum system of a new energy electric vehicle, which is implemented through a vacuum system. The vacuum system includes a vacuum tank, a relative pressure sensor, a vacuum pump, a power supply, a relay, a controller and a brake switch, and the controller is connected to the relative pressure sensor respectively. , The brake switch is connected to the relay signal, the controller can control the relay to work, the relative pressure sensor is installed on the vacuum tank, the vacuum pump is connected to the vacuum tank as the power source of the vacuum tank, and the relay, power supply and vacuum pump are connected in series;...

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Abstract

The invention relates to the field of electric vehicle vacuum system control, in particular to a plateau control method for a vacuum system of a new energy electric vehicle. According to the plateau control method for the vacuum system of the new energy electric vehicle, in the steps S1 and S2, the vacuum system is controlled according to whether the value of the pressure difference P between a vacuum tank and the outside is within the range of B < P < A; and when the altitude is relatively high, S1 and S2 cannot meet the control requirements, the steps S3 and S4 are carried out. The value of P is compared with the values of A and B, whether the vacuum degree of the vacuum system can meet the normal requirement is determined, the vacuum pump is continuously stopped three times according to the setting that the whole vehicle is in the plateau state, and the corresponding steps S3 and S4 are executed, so that the vacuum system can exert the pumping performance of the vacuum pump to the maximum extent in the plateau (the altitude is higher than 1000 m) area, the vacuum degree is improved, and finally the effect of improving the touch feeling of the brake pedal is achieved.

Description

technical field [0001] The invention relates to the field of vacuum system control of an electric vehicle, in particular to a plateau control method for a vacuum system of a new energy electric vehicle. Background technique [0002] With the vigorous development of new energy vehicles, there are certain differences between the braking system and traditional vehicles. The vacuum energy of traditional vehicles mainly comes from the engine. In plateau areas, because of the thin air and low atmospheric pressure, the vacuum system is greatly affected. Traditional Fuel vehicles generally increase the engine speed and control the throttle opening to obtain the required vacuum as much as possible, while the vacuum energy of new energy vehicles mainly comes from the electronic vacuum pump, and the speed of the vacuum pump cannot be adjusted, so the control strategy of the vacuum system is very important. System performance plays a key role. The traditional control strategy cannot re...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T13/72
CPCB60T13/72
Inventor 邓荣冯国兴李立
Owner 广西宁达汽车科技有限公司
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