Vacuum boosting control system of hybrid electric vehicle, and control method of vacuum boosting control system of hybrid electric vehicle

A hybrid vehicle, vacuum boosting technology, applied in the direction of brakes, vehicle parts, brake transmissions, etc., can solve the problems of short service life of vacuum pumps, inconvenient foot pedal control, etc., to extend service life, improve stability and The effect of driving safety and convenient control

Active Publication Date: 2015-08-12
BEIJING BORGWARD AUTOMOBILE CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

The system can solve the problems of short service life of the vacuum pump, inconvenient control of the foot pedal, etc.

Method used

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  • Vacuum boosting control system of hybrid electric vehicle, and control method of vacuum boosting control system of hybrid electric vehicle
  • Vacuum boosting control system of hybrid electric vehicle, and control method of vacuum boosting control system of hybrid electric vehicle
  • Vacuum boosting control system of hybrid electric vehicle, and control method of vacuum boosting control system of hybrid electric vehicle

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Embodiment Construction

[0032] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0033] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or e...

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Abstract

The invention provides a vacuum boosting control system of a hybrid electric vehicle, and a control method of the vacuum boosting control system of the hybrid electric vehicle. The system comprises a vacuum sensor, a vacuum boosting control unit, a relay, a vacuum pump, an electronic stability control unit and a vacuum booster. The vacuum boosting control unit has opening thresholds and closing thresholds; the vacuum sensor is used for detecting the current vacuum degree of the vacuum booster; the vacuum boosting control unit is connected with the vacuum sensor and the electronic stability control unit; the vacuum boosting control unit is used for regulating the opening thresholds and the closing thresholds according to the speed obtained by the electronic stability control unit and performing comparison with the current vacuum degree to control openness and closeness of the vacuum pump and regulate the internal vacuum degree of the vacuum booster. According to the system, the opening thresholds and the closing thresholds are regulated through the speed of the hybrid electric vehicle to provide boosting power at different speeds, the service life of the vacuum pump can be prolonged, and the stability and driving safety of the vehicle can be improved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a vacuum booster control system and a control method for a hybrid electric vehicle Background technique [0002] The vacuum booster system of the existing hybrid electric vehicle only rigidly sets a fixed opening and closing threshold, and controls the opening and closing of the vacuum pump according to the detected vacuum degree of the vacuum booster. [0003] Since the opening and closing threshold is a fixed value, the vacuum pump cannot be effectively adjusted according to different situations such as the driving state of the vehicle (eg, vehicle speed), user operations (eg, braking operation) or environmental factors. Therefore, the workload of the vacuum pump is increased, and the control comfort of the pedals cannot be effectively adjusted according to specific conditions such as vehicle speed and ambient atmospheric pressure, which may make the user unable to effectiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T13/52
CPCB60T13/52
Inventor 於涛秦石岩
Owner BEIJING BORGWARD AUTOMOBILE CO LTD
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