Emergency braking method achieved through electrical park brake

An electronic parking brake and emergency braking technology, applied in the direction of brakes, etc., can solve problems such as potential safety hazards, rear wheel locking, vehicle tail drifting, etc.

Inactive Publication Date: 2015-12-30
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the vehicle uses the traditional mechanical handbrake to achieve braking in an emergency (such as the brake pedal is stuck), because only a large braking force is applied to the rear two wheels, the rear wheels will often lock up and the vehicle will flick. Big security risk

Method used

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  • Emergency braking method achieved through electrical park brake
  • Emergency braking method achieved through electrical park brake

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Embodiment Construction

[0018] EPB uses the built-in longitudinal acceleration sensor in its computer to measure the slope, so that it can calculate the sliding force of the vehicle on the slope due to gravity. The computer applies braking force to the rear wheels through the motor to balance the sliding force, so that the vehicle can stop on the slope. superior. When the vehicle starts, the computer calculates the braking force to be applied through the displacement sensor on the clutch pedal and the size of the accelerator, and at the same time communicates with the engine computer through the high-speed CAN to obtain the engine traction force. The on-board computer automatically calculates the increase in engine traction and reduces braking force accordingly. When the traction force is enough to overcome the sliding force, the computer drives the motor to release the brake, so that the vehicle can start smoothly.

[0019] When the vehicle speed is high but emergency braking must be performed, the...

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Abstract

The invention discloses an emergency braking control method achieved through an electrical park brake. Under the emergency braking condition (for example, a brake pedal is blocked), after status information applied by a park brake switch is collected through an electrical park brake (EPB) system, a command is sent to a vehicle body electrical stable system (ESP) through bus communication, four wheels are braked at the same time through the ESP according to the deceleration value required by the EPB, and if one wheel of a vehicle is locked, the ESP can initiatively execute an anti-lock program. By means of the series of movements, safe and stable braking of the vehicle can be achieved, and person safety and vehicle safety are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of chassis electronic control braking strategy design, in particular to an emergency braking control method realized by electronic parking braking. Background technique [0002] When the vehicle uses the traditional mechanical handbrake to achieve braking in an emergency (such as the brake pedal is stuck), because only a large braking force is applied to the rear two wheels, the rear wheels will often lock up and the vehicle will flick. greater safety hazard. Contents of the invention [0003] In order to solve the problems existing in the prior art, the present invention provides an emergency braking method realized by electronic parking brake. The Electronic Parking Brake (EPB, Electrical Park Brake) controller controls the switch to collect emergency braking requirements, and according to the current braking system failure, commands the Electronic Stability Program (ESP) to use different braking method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T8/1755
CPCB60T8/1755
Inventor 刘晔王康赵东风厉健峰
Owner CHINA FIRST AUTOMOBILE
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