Shift Mode Control After Tollgate Passage for Driver-Intended Acceleration
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Solution Overview
Problem
There is a demand for vehicles with automatic transmissions to perform shift operations as intended by the driver when passing through tollgates, particularly in electronic toll collection systems, where existing systems may not effectively switch between driver-controlled and automatic transmission-controlled shift modes based on vehicle speed and accelerator conditions.
Innovation Solution
A shift control device that includes a detector and a shift mode control processor to switch the vehicle's shift mode from a driver-controlled mode to an automatic transmission-controlled mode after passing through a tollgate, based on predetermined speed and accelerator conditions, ensuring the vehicle can accelerate as intended by the driver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the shift mode is switched to automatic transmission-controlled mode after passing through a tollgate, then the shift operations are performed automatically based on speed and accelerator conditions, but the driver's ability to manually control shift operations is reduced
Solution Approach 1:
The system dynamically switches between manual and automatic shift control modes based on the vehicle's position relative to the tollgate. Before and during tollgate passage, manual control is maintained. After passing the tollgate, the system automatically transitions to automatic transmission-controlled mode, allowing the driver to regain full manual control when needed. This dynamic mode switching resolves the contradiction by providing automation only when appropriate while preserving driver control authority.
2Ease of operation
If the shift mode remains in driver-controlled mode after passing through a tollgate, then the driver can manually control shift operations, but the automatic transmission cannot optimize shift operations based on vehicle speed and accelerator conditions
Solution Approach 1:
The system continuously monitors vehicle speed and accelerator opening degree to determine when to switch from manual to automatic shift control mode. After passing the tollgate, when specific conditions regarding speed and accelerator operation are detected, the system automatically transitions to automatic transmission-controlled mode. This feedback mechanism ensures that automatic optimization is activated at the appropriate moment to improve acceleration performance while maintaining driver control when needed.
3Productivity
If the system automatically switches shift mode after passing through a tollgate, then acceleration performance is optimized, but the system complexity increases due to additional detection and control logic
Solution Approach 1:
The shift control device leverages existing detection capabilities already present in modern vehicles, such as position detection systems used for tollgate identification and accelerator position sensors already required for throttle control. By reusing these existing sensors and integrating the mode-switching logic into the existing transmission control unit, the system achieves automatic optimization of acceleration performance without requiring entirely new detection systems or significantly increasing overall device complexity.
Data Source
AI summary
A shift control device to be applied to a vehicle provided with an automatic transmission includes a detector and a shift mode control processor. The detector detects that the vehicle has passed through a tollgate through which the vehicle is able to pass without stopping. The shift mode control processor switches a shift mode of the vehicle from a first shift mode to a second shift mode the shift mode of the vehicle upon passing through the tollgate is the first shift mode and a predetermined condition regarding one or both of a speed of the vehicle and an accelerator opening degree of the vehicle is satisfied after the vehicle passes through the tollgate. In the first shift mode, a shift operation is performable by a driver, and in the second shift mode, a shift operation is performable by the automatic transmission.