Vehicle Parking Lock Control Device for Stability and Power Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing parking lock mechanisms in vehicles consume excessive power when multiple mechanisms are activated, and there is a risk of vehicle movement when only one wheel is locked on an inclined road, leading to instability.
Innovation Solution
A parking lock control device that activates either one parking lock mechanism initially and generates torque using the other motor to suppress movement, switching to both mechanisms if the vehicle is at risk of moving, based on inclination, steering angle, and acceleration detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple parking lock mechanisms are activated, then vehicle stability is improved, but power consumption increases
Solution Approach 1:
The parking lock control is divided into two independent segments: one parking lock mechanism for primary stabilization and one motor for supplementary anti-movement support. This segmentation allows the system to achieve both stability and energy efficiency by activating only the necessary components based on road conditions.
Solution Approach 2:
The system dynamically adjusts the parking lock configuration based on detected road inclination. On flat roads, only one parking lock mechanism is activated for energy saving. On inclined roads, the system switches to a dual-mechanism configuration (one parking lock + one motor) to maintain stability, making the system adaptive to changing conditions.
2Use of energy by moving object
If only one parking lock mechanism is activated, then power consumption is reduced, but vehicle movement risk increases on inclined roads
Solution Approach 1:
The system incorporates road inclination detection as feedback to continuously monitor environmental conditions. Based on this feedback, the control unit automatically switches between single-parking-lock mode (flat roads) and dual-mechanism mode (inclined roads), ensuring stability is maintained while minimizing power consumption.
Solution Approach 2:
The system changes operational parameters (which components are activated) based on the detected road inclination parameter. When inclination exceeds a threshold, the system transitions from activating one parking lock mechanism to activating one parking lock mechanism plus one motor, adapting the configuration to match the stability requirements of the current road condition.
3Reliability
If both parking lock mechanisms are always activated, then vehicle stability is ensured, but travel distance is reduced due to higher power consumption
Solution Approach 1:
Instead of continuous activation of all parking lock mechanisms, the system employs periodic assessment of road conditions through inclination detection. The parking lock configuration is adjusted periodically based on current conditions, activating full stability mode only when necessary (on inclined roads) and energy-saving mode when conditions permit (flat roads), thereby extending travel distance while maintaining safety.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces power consumption, extends travel distance, and maintains vehicle stability by selectively activating parking lock mechanisms according to road conditions and vehicle behavior, preventing unwanted movement.
Implementation Method 1
a torque that suppresses the vehicle movement is generated by the motor connected to the other parking lock mechanism
Data Source
AI summary
In a parking lock control device of a vehicle of the present invention, when a parking lock activation command is outputted, either one of parking lock mechanisms is activated. In this state, a movement of the vehicle is estimated or detected, and when the vehicle movement is a predetermined amount or more, the parking lock control device generates a torque that suppresses the vehicle movement by the motor connected to the other parking lock mechanism. Power consumption associated with the parking lock is then suppressed.