Twin System Electric AWD Supplementary Drive Axle
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Solution Overview
Problem
Current vehicle powertrain systems face inefficiencies in energy consumption and vehicle dynamics, particularly in traction and performance, due to the limitations of larger electrical machines and lack of compact, high-efficiency solutions for driving multiple wheels.
Innovation Solution
A twin system transmission utilizing two electrical machines connected to a gearbox, which drives an axle assembly, allowing for improved traction, efficiency, and regenerative braking capabilities, with the option for all-wheel drive through a conventional power plant.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If larger electrical machines are used to drive multiple wheels, then power and traction are improved, but energy consumption increases and device complexity increases
Solution Approach 1:
The patent divides the powertrain into two separate electrical machines: a first electrical machine coupled to the transmission for driving the vehicle, and a second electrical machine coupled to the wheels for providing traction. This segmentation allows each machine to be optimized for its specific function, with the second machine being smaller and more efficient since it only needs to provide auxiliary traction rather than full driving power.
2Power
If larger electrical machines are used to drive multiple wheels, then power and traction are improved, but device complexity increases
Solution Approach 1:
The patent combines the functions of two electrical machines into a single integrated powertrain system. The first electrical machine drives the transmission, while the second electrical machine provides direct wheel traction. Their outputs are merged to drive the vehicle, eliminating the need for a single large complex machine while maintaining simplified system architecture.
3Adaptability or versatility
If conventional power plants are used for all-wheel drive, then all-wheel drive functionality is achieved, but energy consumption and emissions increase
Solution Approach 1:
The patent replaces the conventional mechanical power plant with an electrical system for all-wheel drive functionality. The second electrical machine, being electrically driven, can independently drive the wheels to provide all-wheel drive capability without requiring a separate combustion engine or mechanical power transmission system, thereby reducing energy consumption and emissions.
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
The twin system transmission enhances vehicle performance by reducing energy consumption, improving traction and dynamics, and enabling compact high or low voltage electrical machines, while supporting regenerative braking and all-wheel drive functionality.
Implementation Method 1
a first electrical machine and a second electrical machine operatively connected to a gearbox; wherein the first electrical machine and the second electrical machine are constructed and arranged to drive the gearbox
Data Source
AI summary
A number of variations may include a product comprising a first electrical machine and a second electrical machine operatively connected to a gearbox; at least one axle assembly operably attached to the gearbox; wherein the first electrical machine and the second electrical machine are constructed and arranged to drive the gearbox; and wherein the gearbox is constructed and arranged to drive the axle assembly.