ESC-Based Automatic P-Range Engagement Method
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Solution Overview
Problem
The integration of electronic stability control (ESC), electronic shift lever, and electronic parking brake (EPB) systems in vehicles complicates the structure and increases manufacturing costs, and existing solutions fail to effectively implement EPB functionality in vehicles without a dedicated EPB system.
Innovation Solution
A P-range engagement method and device that uses the ESC system and electronic shift lever to detect vehicle stopping, hold wheels, and determine if conditions for P-range engagement are met, allowing for automatic gear shifting to prevent movement, thereby mimicking the EPB function without a traditional EPB system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electronic stability control (ESC), electronic shift lever, and electronic parking brake (EPB) systems are all mounted together to the vehicle, then vehicle safety and convenience are improved, but the structure becomes complicated and manufacturing cost is increased
Solution Approach 1:
The ESC system is designed to perform multiple functions: not only stability control during driving but also automatic P-range engagement when the vehicle is stopped. The control device determines stopping status using ESC sensors and automatically engages the parking range, eliminating the need for a separate EPB system while maintaining safety functionality.
Solution Approach 2:
The patent combines the EPB function with the ESC system by using the ESC control device to perform both stability control and automatic parking range engagement. The ESC hydraulic modulator and control device are utilized to hold wheel disks, merging what would traditionally be separate systems into one integrated solution.
2Reliability
If electronic stability control (ESC), electronic shift lever, and electronic parking brake (EPB) systems are all mounted together to the vehicle, then vehicle safety and convenience are improved, but manufacturing cost is increased
Solution Approach 1:
The ESC system is designed to perform multiple functions: not only stability control during driving but also automatic P-range engagement when the vehicle is stopped. The control device determines stopping status using ESC sensors and automatically engages the parking range, eliminating the need for a separate EPB system while maintaining safety functionality.
Solution Approach 2:
The patent combines the EPB function with the ESC system by using the ESC control device to perform both stability control and automatic parking range engagement. The ESC hydraulic modulator and control device are utilized to hold wheel disks, merging what would traditionally be separate systems into one integrated solution.
3Ease of operation
If a traditional electronic parking brake (EPB) system is used, then parking brake functionality is achieved, but the structure becomes complicated
Solution Approach 1:
The ESC system automatically detects when the vehicle has stopped and autonomously engages the P-range without requiring a separate EPB system or additional user intervention. The control device uses existing ESC sensors to determine stopping status and automatically performs the parking range engagement, making the system self-sufficient.
Solution Approach 2:
The ESC system is designed to perform multiple functions: not only stability control during driving but also automatic P-range engagement when the vehicle is stopped. The control device determines stopping status using ESC sensors and automatically engages the parking range, eliminating the need for a separate EPB system while maintaining safety functionality.
Data Source
AI summary
A P-range engagement method of the vehicle and a device thereof are disclosed. The P-range engagement method is applied to the vehicle equipped with an electronic shift lever, and the method includes performing the vehicle stopping process based on detection of stopping of a traveling vehicle through a control device, holding wheel disks of the vehicle through a controller that is controlled by the control device, comparing the vehicle stopped time period, which is measured by the control device, with a predetermined reference value stored in the control device to determine whether the vehicle stopped time period exceeds the predetermined reference value, and upon determining that the vehicle stopped time period exceeds the predetermined reference value, determining whether conditions for performing P-range engagement are satisfied, and upon determining that the conditions for performing the P-range engagement are satisfied, completing the P-range engagement.