Dynamic Skid-Torque Control for Driveline Reliability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional powertrain systems rely on fixed or static skid-torque values to protect driveline components from high-torque inputs, which may not account for actual worst-case scenarios, leading to unnecessary performance loss and potential driveline component failures due to varying vehicle scenarios such as road grade and direction.
Innovation Solution
A powertrain control system that includes sensors to detect current vehicle scenarios and actively determines real-time skid-torque values, adjusting torque output through engine, transmission, and transfer case control to manage input torque based on changing conditions, thereby preventing excessive stress on driveline components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed or static skid-torque values are used to protect driveline components, then component reliability is improved, but vehicle performance deteriorates due to unnecessary torque limitations
Solution Approach 1:
The patent applies dynamics by transitioning from fixed static skid-torque values to dynamic real-time skid-torque determination. The system continuously monitors vehicle operating conditions (acceleration, deceleration, steering angle, brake status) and adjusts the skid-torque threshold accordingly, allowing the torque limit to adapt to current vehicle scenarios rather than remaining constant
Solution Approach 2:
The patent changes the parameter of skid-torque threshold from a fixed value to a dynamically adjusted value based on vehicle operating conditions. The control module modifies the skid-torque parameter in real-time based on sensor inputs regarding acceleration, deceleration, steering angle, and brake status, optimizing both protection and performance
2Device complexity
If fixed skid-torque values are used, then device complexity is reduced, but the system cannot adapt to varying vehicle scenarios such as road grade and direction
Solution Approach 1:
The patent implements multi-functionality by using a single integrated control module that performs both driveline component protection and vehicle scenario adaptation. The same control system that limits torque to protect components also dynamically adjusts based on multiple vehicle conditions (acceleration, deceleration, steering, braking), making the system versatile across different operating scenarios without requiring separate dedicated systems
Solution Approach 2:
The patent applies feedback by continuously monitoring vehicle operating conditions through sensors and using this information to adjust the skid-torque threshold in real-time. The control module receives feedback about acceleration, deceleration, steering angle, and brake status, then modifies the torque limit accordingly, creating a closed-loop system that adapts to varying vehicle scenarios
Data Source
AI summary
A vehicle having a powertrain control system includes an internal combustion engine configured to generate torque, and a transmission to transfer the torque to at least one driveline component of the vehicle. At least one electronic sensor is configured to output a signal indicative of at least one operating parameter of the vehicle. The powertrain control system further includes a vehicle scenario detection module and an electronic control module. The vehicle scenario detection module determines a current vehicle scenario of the vehicle based on the at least one operating parameter. The electronic control module determines a current vehicle scenario based on the at least one operating parameter, to actively determine an active skid-torque value in real-time based on the current vehicle scenario. The control module further generates a torque limiting control signal that adjusts operation of a powertrain system of the vehicle based on the active skid-torque value.