Motorcycle Torque Pre-Control for Natural Throttle Feel
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing traction control systems for motorcycles often excessively suppress and rapidly reduce engine torque during pre-control, leading to impaired natural feeling for the rider and compromised vehicle stability.
Innovation Solution
A control system comprising a first controller for the engine torque and a second controller for hydraulic pressure control, where pre-control is executed by determining and sending a reference torque to the first controller, which then suppresses torque without showing a reduction tendency, thereby preventing excessive and rapid torque reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pre-control is executed to improve vehicle stability and prevent spinning, then safety is improved, but the torque is excessively suppressed and rapidly reduced which impairs natural feeling from throttle operation
Solution Approach 1:
The patent applies preliminary action by executing pre-control before spinning or wheelie is actually detected. The second controller determines reference torque in advance based on predicted behavior, and sends it to the first controller before main control is needed. This prevents the need for rapid torque reduction during critical moments while maintaining rider feel.
Solution Approach 2:
The patent uses feedback by continuously monitoring motorcycle behavior (spinning or wheelie detection) and adjusting the reference torque accordingly. The second controller receives feedback on vehicle state and dynamically determines appropriate reference torque values to send to the first controller, balancing stability and rider feel.
2Stability of the object's composition
If torque suppression control is executed to mitigate spinning or wheelie, then vehicle stability is improved, but delayed communication between controllers causes excessive and rapid torque reduction
Solution Approach 1:
The patent resolves the communication delay issue by performing preliminary action - the second controller determines and sends the reference torque to the first controller before spinning or wheelie occurs. This advance preparation ensures the first controller has the reference torque ready when main control is needed, eliminating the adverse effects of communication delays during critical moments.
3Reliability
If the second controller determines and sends reference torque to the first controller during pre-control, then traction control is improved, but the torque shows reduction tendency which impairs rider experience
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the reference torque parameter based on motorcycle behavior. The second controller determines appropriate reference torque values that prevent excessive suppression while maintaining traction control effectiveness. This ensures torque does not show unwanted reduction tendency during pre-control.
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention obtains a control system and a control method capable of improving safety without impairing natural feeling obtained by a motorcycle rider from a throttle operation. In regard to the control system and the control method according to the invention, the control system includes a first controller controlling torque TA of a drive source of a motorcycle and a second controller communicating with the first controller. Prior to main control in which torque suppression control is executed at the time of detecting spinning of a drive wheel or a wheelie, pre-control is executed in which the second controller determines and sends reference torque TS of the drive source to the first controller and the first controller executes the torque suppression control to suppress torque on the basis of the reference torque TS received from the second controller. In the torque suppression control in the pre-control, the torque TA does not show a reduction tendency.