Vehicle Clutch Torque Control for Smooth Half-Engaged Acceleration
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Solution Overview
Problem
Existing vehicle control systems do not effectively improve the traveling feeling when the vehicle is in a half-engaged state, particularly during transitions and accelerations.
Innovation Solution
A controller system that includes a driving source, friction clutch, clutch actuator, and acceleration operation sensor, which adjusts the engagement amount of the friction clutch based on detected acceleration operations to control the driving source's output torque, ensuring smooth transitions and improved responsiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the clutch actuator is controlled to adjust engagement amount during half-engaged state, then the traveling feeling is improved, but the control complexity increases
Solution Approach 1:
The controller continuously monitors the engagement amount of the friction clutch and adjusts the clutch actuator based on detected acceleration operations. This feedback mechanism enables dynamic adjustment of clutch engagement to improve traveling feeling during half-engaged states, while the automated control algorithm manages the complexity of real-time adjustments.
Solution Approach 2:
The system dynamically adjusts the engagement amount of the friction clutch based on detected acceleration operations and current vehicle state. This dynamic control allows the clutch to transition smoothly between engaged and disengaged states, improving traveling feeling during transient conditions while the control algorithm manages system complexity.
2Stability of the object's composition
If the driving source output torque is adjusted to correspond to engagement amount, then the torque transmission smoothness is improved, but the response time increases
Solution Approach 1:
The controller pre-calculates the required output torque based on detected acceleration operations and predicted engagement amount. By preparing the torque adjustment in advance, the system achieves smooth torque transmission during clutch engagement while minimizing the actual response time when the clutch state changes.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances the vehicle's traveling feeling by optimizing torque transmission and responsiveness during half-engaged states, ensuring smooth acceleration and adherence to the rider's intended speed and torque requirements.
Implementation Method 1
a friction clutch that transmits torque corresponding to an engagement amount of the friction clutch
Data Source
AI summary
A controller of a vehicle according to one aspect is a controller of a vehicle including: a driving source; a driving wheel; a friction clutch that transmits torque corresponding to an engagement amount of the friction clutch; a clutch actuator that changes the engagement amount of the friction clutch; and an acceleration operation sensor. The controller includes processing circuitry configured to: determine whether or not the friction clutch is in an engaged state; when it is determined that the friction clutch is not in the engaged state, control the clutch actuator such that the engagement amount of the friction clutch becomes a value corresponding to the acceleration operation amount received from the acceleration operation sensor; and control the driving source such that output torque of the driving source becomes a value corresponding to the engagement amount or a value corresponding to a parameter corresponding to the engagement amount.