Rear-Wheel Torque Control for Stable Motorcycle Deceleration Slides
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Solution Overview
Problem
Achieving a controlled, stable slide in motor vehicles, particularly motorcycles, during deceleration is challenging as it requires precise control of braking and engine torque to maximize slip and cornering force, which existing methods fail to execute effectively.
Innovation Solution
A method that combines the control of a brake system and an engine to generate a total torque on the rear wheel, allowing for high accuracy and control speed, with the brake system producing braking torque and the engine producing acceleration torque, thereby creating a controlled slide by regulating partial torques to achieve the desired deceleration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the braking system is used to generate high braking torque, then deceleration performance is improved, but control accuracy and response speed deteriorate
Solution Approach 1:
The patent combines the braking system and engine into a unified control system that generates total torque at the rear wheel. The braking system provides high braking torque while the engine provides acceleration torque, and both are controlled by a single control unit that coordinates their interaction to achieve precise control of the rear wheel's total torque, resolving the contradiction between high power and control accuracy.
2Measurement precision
If the engine torque is controlled to generate acceleration torque, then control accuracy and speed are improved, but the torque range is limited
Solution Approach 1:
The patent merges the braking system's high torque capability with the engine's precise control accuracy. The braking system contributes to expanding the torque range through high braking torque, while the engine maintains control accuracy through precise torque control. The control unit coordinates both systems to achieve a wide torque range with high control accuracy.
3Speed
If controlled slide is achieved through traditional braking alone, then deceleration is possible, but stability and control difficulty increase
Solution Approach 1:
The patent changes the control parameters from traditional braking-only control to coordinated control of braking torque and engine torque. By controlling the total torque at the rear wheel through both systems, the patent achieves more stable and controllable slide conditions. The control unit monitors and adjusts both braking and engine torque to maintain optimal slip conditions for stable sliding.
Data Source
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Figure 3
AI summary
The invention relates to a method for decelerating a single-track motor vehicle, comprising the following steps: a) determining, by means of a control unit (22) of the motor vehicle, a total torque (GM) of a wheel (12) of the motor vehicle required for a desired riding manoeuvre, b) determining, by means of the control unit (22), a braking partial torque (B) and a motor partial torque (M) as a function of the total torque (GM) required, and c) generating the braking partial torque (B) on the wheel (12) by controlling a brake system of the motor vehicle by means of the control unit (22) and generating the motor partial torque (M) on the wheel (12) by controlling a motor of the motor vehicle by means of the control unit (22). The invention furthermore relates to a single-track motor vehicle.