Hybrid Manager Control Unit Torque Distribution
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Solution Overview
Problem
Existing vehicle control systems for all-wheel drive vehicles limit servo control of drive torque and braking torques, affecting motor vehicle longitudinal acceleration due to transverse dynamic influences.
Innovation Solution
A hybrid manager control unit that optimizes overall target torque distribution by separating drive control for efficiency and driving dynamics, allowing for partial or complete redistribution of axle torque specifications based on driving dynamic parameters, and includes torque limiters to prevent overload and maintain longitudinal acceleration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If torque distribution is optimized for efficiency by dividing overall target torque specification into first and second axle torque specifications, then energy efficiency is improved, but longitudinal acceleration is negatively impacted due to transverse dynamic influences
Solution Approach 1:
The system dynamically adjusts the torque distribution between axles based on real-time driving conditions and transverse dynamic influences. The redistribution device modifies the torque specifications adaptively, allowing the system to transition between efficiency-optimized distribution and acceleration-optimized distribution as needed
Solution Approach 2:
The system incorporates feedback mechanisms that monitor driving dynamic parameters and transverse dynamic influences, then use this information to adjust the torque distribution. The redistribution device receives input about actual vehicle behavior and corrects the torque distribution to maintain both efficiency and acceleration performance
2Reliability
If partial or complete redistribution of axle torque specification is performed to account for driving dynamic parameters, then driving dynamics and safety are improved, but efficiency optimization is compromised
Solution Approach 1:
The torque distribution strategy is made dynamic rather than static. The system continuously evaluates driving conditions and adjusts the redistribution ratio between axles, allowing efficient operation under normal conditions while providing enhanced safety and driving dynamics when conditions require it
Solution Approach 2:
The system changes the torque distribution parameters based on driving dynamic parameters. By adjusting the redistribution ratio as a controllable parameter, the system can optimize for efficiency when conditions permit and switch to prioritizing safety and driving dynamics when conditions change
Data Source
AI summary
A hybrid manager control unit for a drive train of a vehicle, wherein the hybrid manager control unit has a total target torque dividing device for optimizing an efficiency by dividing a total target torque specification into a first axle torque specification for a first axle of the vehicle and a second axle torque specification for a second axle of the vehicle. The hybrid manager control unit has a redistributing device for producing a first and a second redistributed axle torque specification by partially or completely redistributing the first or the second axle torque specification to the second redistributed axle torque specification or to the first redistributed axle torque specification while taking into account at least one driving dynamics parameter. A vehicle includes a hybrid manager control unit for a drive train of a motor vehicle and a method for distributing a total target torque specification for a vehicle.