Vehicle Parking Mode Control System for Automatic Transmission
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Solution Overview
Problem
In vehicles with automatic transmissions, the distinction between gearshift lock and parking brake is often unclear to users, leading to complex and confusing operator control situations, as users must decide whether to use one, both, or neither for securing the vehicle against rolling away.
Innovation Solution
A method that detects a user's activation action and determines the vehicle's movement status to simultaneously close the parking brake and engage the gearshift lock, simplifying the process and ensuring the vehicle is secured in a single operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If both parking brake and gearshift lock are used to secure the vehicle, then the vehicle security against rolling away is improved, but the operator control complexity increases and user confusion arises
Solution Approach 1:
The patent combines the parking brake and gearshift lock into a single integrated parking mode control system. When the user selects the parking mode, both the parking brake and gearshift lock are automatically engaged simultaneously, eliminating the need for separate manual operations and reducing control complexity while maintaining security.
Solution Approach 2:
The system automatically manages the engagement and disengagement of both securing mechanisms without requiring user intervention in the coordination process. The control unit autonomously activates both the parking brake and gearshift lock when parking mode is selected, and automatically releases them when the driver's seat belt is fastened or the ignition is activated.
2Reliability
If both parking brake and gearshift lock are used together, then the vehicle security is improved, but the number of required actions increases
Solution Approach 1:
The patent merges the operation of engaging both the parking brake and gearshift lock into a single user action - selecting the parking mode. This single action triggers the simultaneous engagement of both securing mechanisms, making the operation simple and intuitive while ensuring comprehensive vehicle security.
Solution Approach 2:
The system performs the complex coordination of engaging both securing mechanisms as a preliminary automated action when the user simply selects parking mode. The control unit pre-programmed to automatically engage both the parking brake and gearshift lock in sequence, relieving the user of the burden of performing multiple separate actions.
3Ease of operation
If a single activation action is used to engage both parking brake and gearshift lock, then the ease of operation is improved, but the control precision for determining when to release the parking mode must be increased
Solution Approach 1:
The system incorporates feedback mechanisms through sensors that monitor the driver's seat belt status and ignition state. These feedback signals automatically trigger the release of the parking mode, ensuring precise control. The control unit continuously receives input from these sensors and adjusts the engagement state of the parking brake and gearshift lock accordingly, maintaining both ease of operation and control precision.
Data Source
AI summary
A method for controlling a parking mode for a vehicle includes detecting an activation action of a user of the vehicle, determining a movement status of the vehicle, and activating a parking mode for the vehicle by closing a parking brake of a brake device of the vehicle and by engaging a gearshift lock of a transmission of the vehicle.