Automatic Transmission Control Device Manual Gearshift Mode
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing automatic transmission systems face low operability and complex configurations when switching between automatic and manual gearshift modes, requiring operators to remove their hands from the steering wheel and complicating the steering wheel configuration with additional switches.
Innovation Solution
A control device for automatic transmission that allows for manual gearshift modes while maintaining the shift position in one of two forward positions, using a common operating unit to switch between gearshift modes without additional switches, enabling manual gearshift operations without changing the shift device's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a manual mode position is added to the shift device for manual gearshift operation, then manual gearshift capability is improved, but the shift device configuration becomes complicated and operability decreases
Solution Approach 1:
The shift device is designed so that the forward position serves dual functions: it acts as a drive position for automatic gearshift mode and as a manual mode position for manual gearshift operation. This multi-functionality eliminates the need for a separate manual mode position, thereby maintaining simple configuration while providing manual gearshift capability.
Solution Approach 2:
The invention merges the automatic gearshift function and manual gearshift function into a single operating position (forward position). By combining these functions that were previously separated into different positions, the shift device configuration remains simple while enabling both operating modes.
2Adaptability or versatility
If a changeover switch is added to the steering wheel for mode switching, then gearshift mode switching capability is improved, but the steering wheel configuration becomes complicated
Solution Approach 1:
The forward position of the shift device serves multiple functions: it enables automatic gearshift mode, enables manual gearshift mode, and serves as the basis for mode switching. This eliminates the need for a separate changeover switch on the steering wheel, keeping the steering wheel configuration simple while providing full mode switching capability.
Solution Approach 2:
The mode switching function is extracted from the steering wheel and integrated into the shift device itself. By removing the need for a separate changeover switch on the steering wheel, the steering wheel configuration remains simple while the shift device handles all mode switching operations.
3Adaptability or versatility
If the shift lever is moved from drive position to manual mode position for mode switching, then manual gearshift capability is improved, but operability decreases due to hand removal from steering wheel
Solution Approach 1:
The forward position serves as both the drive position for automatic mode and the manual mode position for manual operation. This allows the driver to access manual gearshift capability without moving the shift lever to a separate position, thereby maintaining continuous contact with the steering wheel and preserving high operability.
Data Source
AI summary
A control device 5 for an automatic transmission apparatus 2 has an automatic gearshift mode in which the gear of the automatic transmission 2 is automatically controlled by setting the shift position of a shift device 3 in one of forward travel positions including a first and a second forward position. The control device 5 also has a manual gearshift mode changing the gear one step by one step by an operating unit 4 other than the shift device 3 while maintaining the shift position set in the forward position 33. The manual gearshift mode includes a first manual mode when the shift position of the shift device 3 is set in a first forward position, and a second manual mode when the shift position is set in a second forward position. A control pattern of the first manual mode differs from that in the second manual mode.