Gear Shift Lever Feedback Tuning for Manual Shift Response
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Solution Overview
Problem
Conventional gear shift operation devices in manual transmission mode lack sufficient response or resistance, failing to meet the operator's expectation of a tangible feedback during gear changes, which is crucial for sports driving enthusiasts who frequently use manual gear changes.
Innovation Solution
A gear shift operation device with a control lever that provides a larger operation reaction force in manual transmission mode compared to range switchable mode, allowing operators to feel a more substantial response and resistance, while maintaining the same stroke amount for gear changes in both modes to enhance the perception of the gear shift operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the stroke amount of the control lever is set smaller in manual transmission mode to allow quicker operation, then the gear change speed is improved, but the operator's perception of sufficient response is reduced
Solution Approach 1:
The control lever system dynamically adjusts its characteristics based on the selected mode. In manual transmission mode, the control lever provides sufficient response and resistance to meet operator expectations for tangible feedback. In range switchable mode, the control lever provides lighter operation reaction force for smoother operation. This dynamic adaptation resolves the contradiction by making the operation reaction force characteristic variable rather than fixed.
Solution Approach 2:
The patent changes the parameter of operation reaction force based on the selected mode. By detecting whether the vehicle is in manual transmission mode or range switchable mode, the system adjusts the operation reaction force parameter accordingly - increasing it in manual mode for better feedback and decreasing it in range mode for smoother operation. This parameter change strategy directly resolves the technical contradiction.
Data Source
AI summary
A gear shift operation device for a vehicle to which a multiple-stage automatic transmission is mounted, is provided. By a control lever being manually operated in a range switchable mode, a range position is switched at least between a D-range where automatic transmission is performed and an R-range, and by the control lever being manually operated in a manual transmission mode, a gear change is performed. An operation reaction force when the control lever is manually operated is set larger when the gear change is performed in the manual transmission mode than when the range position is switched in the range switchable mode.