Motorcycle Speed Limiter with Dynamic Torque Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing speed limiter systems for high-powered motorcycles are complex to activate and deactivate, requiring multiple manipulations and potentially causing instability due to sudden jerks during acceleration, which compromises rider safety and comfort.
Innovation Solution
A method for a motorcycle speed limiter that activates or deactivates based on instantaneous speed, engine torque, and acceleration, allowing for single-button control and smooth transitions between speed limits, preventing jerks and maintaining stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a speed limiter is implemented in a high-powered motorcycle, then speed control and rider safety are improved, but the system becomes complex to operate requiring multiple manipulations that distract the rider
Solution Approach 1:
The speed limiter system automatically activates and deactivates based on detected riding conditions (acceleration requests, speed thresholds) without requiring manual rider input. The system serves itself by monitoring engine torque requests and acceleration commands, activating only when the rider demands moderate acceleration at speeds below the limit, and deactivating when maximum acceleration is requested or speed exceeds the limit.
2Reliability
If the speed limiter is activated during high acceleration demand, then speed control is maintained, but the motorcycle becomes unstable due to jerks from sudden torque reduction
Solution Approach 1:
The system prevents instability by detecting acceleration demands before they result in harmful jerks. It activates the speed limiter only when acceleration requests are moderate (below maximum torque threshold), and deactivates immediately when maximum acceleration is demanded or speed exceeds the limit, thereby preemptively avoiding the jerky torque reductions that would cause instability.
Solution Approach 2:
The speed limiter dynamically adjusts its activation state based on real-time riding conditions. It transitions between active and inactive states according to varying acceleration demands and speed levels, optimizing the balance between speed control and motorcycle stability throughout the riding sequence.
3Ease of operation
If the speed limiter requires multiple control manipulations for activation and deactivation, then precise control is achieved, but the rider's attention is diverted from actual riding
Solution Approach 1:
The system eliminates the need for manual control manipulations by automatically managing its own activation and deactivation based on detected riding conditions. The rider simply operates the motorcycle normally, and the system intervenes only when appropriate conditions are met (moderate acceleration demand below speed limit), thereby recovering full rider attention for the actual riding task.
Data Source
AI summary
Disclosed is a solution to the use of a speed limiter in a motorcycle that has a high capacity for acceleration, including a method for limiting the speed of a motorcycle using precise parameters of speed, acceleration and required engine torque and a single control button to manage the smart activation and deactivation of the limiter and to input new speed limits Vlim in a simple way. It thus allows the use of a speed-limiting system in a motorcycle that has a high power/weight ratio by avoiding the sources of interference with the riding and the effects liable to jeopardize its stability.