Shift Control Apparatus Dynamic Return Timing
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Solution Overview
Problem
Existing shift controlling apparatuses automatically return to automatic shift mode after a predetermined period of time, regardless of the driver's intentions, which can disrupt manual shift operations and provide an unfamiliar driving experience.
Innovation Solution
A shift controlling apparatus that includes automatic shift mode returning means, with manual operation detection and operational state discrimination to determine when to return to automatic shift mode based on shift timing and elapsed time, ensuring the return aligns with the driver's operational requests, using a shift map that considers acceleration, deceleration, and cruise operational regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the shift mode automatically returns to automatic shift mode after a predetermined period of time, then the driver is prevented from forgetting to changeover modes, but the driver's manual shift operation may be interrupted and an unfamiliar driving experience is provided
Solution Approach 1:
The system continuously monitors shift lever position and operational state to determine whether to return to automatic mode. By using feedback from shift lever position detection and operational state discrimination, the system intelligently decides when to maintain manual mode or return to automatic mode, preventing unwanted interruptions while ensuring mode changeover reliability.
Solution Approach 2:
The return-to-automatic timing is made dynamic rather than fixed. The system adjusts the timing based on real-time operational state (acceleration, deceleration, idle) and shift lever position, allowing the manual shift mode to be maintained longer when the driver is actively operating the vehicle, while still returning automatically when appropriate.
2Device complexity
If the shift mode returns to automatic shift mode based on a fixed predetermined period of time, then the system is simple to implement, but the return timing does not align with the driver's operational requests
Solution Approach 1:
The system changes the timing parameter dynamically based on operational state. Instead of using a fixed predetermined time, the system adjusts the return timing according to parameters such as vehicle speed, acceleration state, deceleration state, and idle state, allowing the system to adapt to driver's operational requests while maintaining reasonable system complexity.
Solution Approach 2:
The system uses its own operational state information (shift lever position, vehicle operating conditions) to automatically determine the appropriate return timing without requiring external input from the driver. The operational state discrimination function enables the system to serve itself by making intelligent decisions based on its current state.
Data Source
AI summary
A shift controlling apparatus includes an automatic shift mode returning member with a manual shift mode wherein a transmission is manually shifted and an automatic shift mode wherein the transmission is automatically shifted based on an automatic shift map and changes over. When a manual shift operation is carried out in the automatic shift mode, the shift mode moves to the manual shift mode and then automatically returns to the automatic shift mode after the manual shift operation. The automatic shift mode returning member includes a manual operational detection member for detecting a manual shift operation for shift up or shift down of the transmission during the automatic shift mode, first operational state discrimination member for discriminating an operational state of a vehicle when the manual shift operation is carried out, and second operational state discrimination member for discriminating an operational state of the vehicle after the manual shift operation.