Automotive Transmission Selector with Central Neutral Position
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Solution Overview
Problem
Current automotive automatic transmission controls are complex and do not adequately simplify the driving experience for drivers, leading to increased cognitive load.
Innovation Solution
An electronic control system for automotive automatic transmissions that includes a selector shift pattern and associated operating modes, with a driver-operable selector that can switch between modes intuitively, using a combination of lever and button controls connected to a body computer and electronic control units, allowing for easy switching between reverse, neutral, drive, and manual modes, and enabling intuitive control of gear changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If complex control interfaces are used for automatic transmission, then more functions and modes can be controlled, but driver cognitive load increases and operation becomes less intuitive
Solution Approach 1:
The transmission control system is segmented into distinct operating modes (automatic, manual, sport, eco) that can be independently selected. Each mode represents a separate functional segment that the driver can activate based on specific driving conditions, allowing comprehensive control capabilities while maintaining simplicity through clear mode separation.
Solution Approach 2:
Instead of requiring drivers to navigate complex menus or understand sophisticated control logic, the system inverts the approach by providing intuitive physical selectors that directly correspond to common driving scenarios. The control interface is designed to match natural driver expectations rather than requiring adaptation to complex system logic.
2Reliability
If traditional transmission controls are used, then system reliability is maintained, but simplicity and naturalness of operation are reduced
Solution Approach 1:
The transmission system incorporates self-service capabilities through automatic mode selection based on sensor inputs. The system automatically detects driving conditions (accelerator pedal position, vehicle speed, engine load) and can autonomously select appropriate transmission modes, reducing the complexity of manual control while maintaining reliable operation through proven transmission control logic.
Solution Approach 2:
The transmission control system is designed with multi-functionality to handle various driving scenarios through a unified control architecture. A single electronic control unit manages multiple transmission modes and functions, ensuring consistent reliability across different operating conditions while providing simplified access through universal control interfaces that work across all modes.
Data Source
AI summary
An electronic control system for a motor vehicle comprising an automatic transmission operable to assume different operating modes, comprising a reverse mode, a neutral mode, a park mode, a drive mode and a manual mode, in response to a manual operation of a selector with at least one control switch and mounted to assume a stable central neutral position when the selector is not operated, and to be movable in opposite selection directions from the stable central neutral position to reach two instable end-of-travel selection positions arranged on opposite sides of the stable central neutral position. The automotive electronic control system is configured to detect operation of the selector and of the control switch and cause the transmission to switch from drive mode to reverse mode in response to operation of the selector in a first selection direction and with the control switch pressed, and from reverse mode to drive mode in response to operation of the selector in a second selection direction opposite to the first selection direction and with the control switch pressed.