Parallel-Axis Drive Module for Torque Vectoring
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Solution Overview
Problem
Existing drive modules with transverse power sources for propulsive and torque-vectoring inputs face packaging challenges in vehicles due to their complex design.
Innovation Solution
A drive module with a housing assembly, input pinion, differential assembly, bevel gears, and an electric motor, where the input pinion and differential ring gear are rotatable about parallel axes, allowing for compact packaging and efficient torque-vectoring capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If transverse power sources are used for propulsive and torque-vectoring inputs, then torque-vectoring capabilities are achieved, but packaging becomes difficult
Solution Approach 1:
The patent combines the propulsive power source and torque-vectoring power source into a single longitudinal arrangement within the drive module housing, rather than using separate transverse power sources. This merging approach integrates both functions into one compact unit, achieving torque-vectoring capabilities while simplifying packaging requirements.
Solution Approach 2:
The patent changes the spatial arrangement from transverse (side-by-side) to longitudinal (end-to-end) positioning of power sources. By aligning the propulsive and torque-vectoring power sources along the same axis, the design achieves three-dimensional space optimization, reducing the overall footprint and facilitating easier integration into vehicle architectures.
2Adaptability or versatility
If transverse power sources are used for propulsive and torque-vectoring inputs, then dual power input is achieved, but integration into vehicle becomes challenging
Solution Approach 1:
The patent merges the dual power input system into a single integrated drive module housing, where both the propulsive power source and torque-vectoring power source are contained within the same structure. This consolidation simplifies vehicle integration by reducing the number of separate components that need to be installed and connected.
Solution Approach 2:
The drive module housing serves multiple functions simultaneously: it contains both power sources, provides structural support, and facilitates both propulsive and torque-vectoring operations. This multi-functionality reduces the overall component count and simplifies the integration process into various vehicle platforms.
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
Enables easier integration into vehicles while maintaining torque-vectoring functionality, enhancing packaging efficiency and operational flexibility.
Implementation Method 1
The first bevel gear is coupled to the one of the first and second ring gears for rotation therewith. The second bevel gear is meshed with the first bevel gear and is rotatable about a third axis that is parallel to the first axis.
Implementation Method 2
The transmission is received in the housing assembly and has first and second planetary gearsets. The first planetary gearset has a first ring gear, a first planet carrier, a first sun gear and a plurality of first planet gears.
Implementation Method 3
The differential assembly is received in the housing assembly and includes a differential input, which is rotatable about a second axis that is not parallel to the first axis, and first and second differential outputs that are rotatable about the second axis.
Data Source
AI summary
A drive module with a first input, which receives rotary power from a first power source, and a second input that receives rotary power from a second power source. Rotary power from the first power source is transmitted to a differential assembly to drive a pair of vehicle wheels. Rotary power is selectively provided by the second power source to provide the drive module with torque-vectoring capabilities in which equal but opposite moments are applied to the vehicle wheels. The axes of the first input and the second input are parallel one another.