A slope assist system based on electro-hydraulic braking and its control method

A technology of hydraulic braking and auxiliary systems, which is applied in the field of automobile braking systems, and can solve problems such as the hidden danger of oil leakage caused by increased pipeline oil pressure, gradual withdrawal of braking force, and increased loading costs.

Active Publication Date: 2020-10-27
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

However, the braking pressure before the brake pedal is released is generally greater than the minimum braking pressure required to keep the vehicle stationary, so this control method causes a waste of braking force, and at the same time, the high oil pressure in the pipeline increases the risk of oil leakage. hidden danger; moreover, this kind of HHC does not have a strategy for the gradual withdrawal of braking force when starting downhill; finally, the traditional braking system must be installed with ESP in order to realize the HHC function, which increases the installation cost

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  • A slope assist system based on electro-hydraulic braking and its control method
  • A slope assist system based on electro-hydraulic braking and its control method
  • A slope assist system based on electro-hydraulic braking and its control method

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Embodiment Construction

[0042] The present invention will be described in detail below according to the accompanying drawings, which is a preferred embodiment among various implementations of the present invention.

[0043] The aforementioned and other technical contents of the present invention will be clearly presented in the following detailed description of preferred embodiments with reference to the drawings. Through the description of specific implementation methods, the technical means and functions adopted by the present invention to achieve the intended purpose can be understood more deeply and specifically. However, the attached drawings are only for reference and illustration, and are not intended to limit the invention.

[0044] Such as figure 1 As shown, a hill start assist system based on electronic hydraulic braking includes: a hill start assist button 101 for reflecting the driver's intention to turn on the hill start assist system, a slope sensor 102, a wheel speed sensor 103, a gear...

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Abstract

The invention discloses a ramp auxiliary system based on electro-hydraulic braking and a control method thereof , including a ramp start assist key for reflecting the driver's intent to open the rampstart assist system, Slope sensor, wheel speed sensor, gear information sensor, parking system working sensor, accelerator pedal position sensor, electronic control unit and electro-hydraulic brake system. The invention also discloses a ramp starting assistant system control method based on electro-hydraulic brake. The invention can accurately calculate and apply the required ramp braking force according to the current state of the vehicle when starting, thereby preventing the vehicle from rolling on the ramp and eliminating the hidden danger of safety. Accurate control of braking force can berealized by controlling the change of current value of servo motor in electro-hydraulic brake structure, and only the accelerator pedal can be controlled to start, which is easy to operate and improves the comfort and safety of driver. No need to install ESP to reduce loading cost.

Description

technical field [0001] The invention relates to a slope assist system based on electronic hydraulic braking and a control method thereof, belonging to the technical field of automobile braking systems. Background technique [0002] The traditional braking system usually consists of a brake pedal, a vacuum booster pump, a brake master cylinder, a brake wheel cylinder and corresponding pipelines. has become a research hotspot. At present, researchers have developed an electronic hydraulic braking system by replacing the vacuum booster pump with a small-sized and light-weight motor. The system uses a pedal simulator to simulate the pedal feel, and the motor directly pushes the servo master cylinder piston to build pressure on the servo master cylinder, realizing the decoupling of pedal force and braking force, so that the braking force can be controlled very precisely. [0003] When the car starts uphill, the traditional method is to first pull the handbrake, then step on the...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W30/18
CPCB60W30/18118
Inventor 杨少磊上官文斌苏比哈什·如凯迦
Owner SOUTH CHINA UNIV OF TECH
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