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Brake pedal stroke calculation device and brake pedal stroke calculation method

A technology of brake pedal and pedal stroke, applied in the direction of brake transmission, foot start device, brake, etc., can solve the problems of difficult sensor arrangement, high cost, unfavorable technical solutions to implement cost control of economical hybrid vehicles, etc. Achieve the effect of solving difficult layout, low cost and simple structure

Active Publication Date: 2016-06-01
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to arrange the sensor in practical application, and the cost is high, which is not conducive to the implementation of technical solutions and the cost control of economical hybrid vehicles.

Method used

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  • Brake pedal stroke calculation device and brake pedal stroke calculation method
  • Brake pedal stroke calculation device and brake pedal stroke calculation method
  • Brake pedal stroke calculation device and brake pedal stroke calculation method

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Embodiment Construction

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are only used to explain the present invention, and do not constitute a limitation to the protection scope of the present invention.

[0018] Such as Figure 1 to Figure 4 The shown brake pedal stroke calculation device includes a brake pedal 1 , a vacuum booster 6 , a brake master cylinder 2 , a brake signal switch 3 , a pressure sensor 4 and a pedal stroke simulation controller 5 .

[0019] see figure 2 , the brake pedal 1 is connected to the vacuum booster 6 through the brake push rod 7, the brake pedal includes a pedal arm 8 and a support bracket 9, and the pedal arm 8 is rotatably mounted on the support bracket 9 through a rotating shaft 10 , A return spring 11 is provided between the pedal arm 8 and the support bracket 9 . The brake signal switch 3 is used to detect whether the brake pedal is stepped on, and transmit...

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Abstract

The invention discloses a brake pedal stroke calculation device and a brake pedal stroke calculation method. The brake pedal stroke calculation device comprises a brake pedal, a brake master cylinder, a brake signal switch, a pressure sensor and a pedal stroke analogue controller. The brake signal switch is used for detecting whether the brake pedal is stepped on or not and transmitting brake switch signals to the pedal stroke analogue controller, and the pressure sensor transmits acquired master cylinder pressure signals to the pedal stroke analogue controller. According to the brake switch signals and the master cylinder pressure signals, a pedal opening degree is calculated on the basis of a relational expression preset in the pedal stroke analogue controller. By the brake pedal stroke calculation device and the brake pedal stroke calculation method, adoption of pedal stroke sensors is avoided, and accordingly vehicle cost is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of automobile braking, in particular to a brake pedal stroke calculation device and a calculation method thereof. Background technique [0002] At present, the method of hybrid vehicle braking energy recovery system is to generate different braking forces under different braking strokes: the idle stroke of the brake pedal uses motor regenerative braking, and the braking stroke uses combined braking of the motor and the braking system. Therefore, the brake pedal travel signal plays a key role in judging the energy that can be recovered by the electric motor. [0003] Today's hybrid and electric vehicles are equipped with pedal travel sensors that accurately measure the opening of the brake pedal. However, it is difficult to arrange the sensor in practical application, and the cost is high, which is not conducive to the implementation of technical solutions and the cost control of economical hybrid vehicles. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T7/06B60T13/52B60T13/66
CPCB60T13/52B60T13/66B60T7/06B60T2270/60
Inventor 张伟方丁可
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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