Integrated Vehicle Driving Assembly with Single Power Source
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Solution Overview
Problem
Conventional car driving assemblies have separate power sources and automatic transmissions, occupying large space and experiencing reduced transmission performance due to shaft coupling impacts, which hinders miniaturization and light weighting trends.
Innovation Solution
A longitudinally placed vehicle driving assembly with a single power source integrates the rear cover of the power source and the front housing of the automatic transmission, and integrally manufactures the output shaft of the power source and the input shaft of the automatic transmission, featuring a reduction-gear train with multiple stages and electromagnetically driven shifting clutches for improved performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the power source and automatic transmission are provided in a separated form, then the ease of manufacture is improved, but the volume of the driving assembly increases
Solution Approach 1:
The patent merges the power source and automatic transmission into a single integrated assembly. The power source housing and transmission housing are combined into one unified structure, reducing the overall volume of the driving assembly while maintaining separate functional zones for power generation and power transmission.
Solution Approach 2:
The integrated housing structure serves multiple functions: it acts as both the power source housing and the transmission housing, providing structural support, containing internal components, and facilitating power transmission all in one unified component.
2Ease of repair
If the power source and automatic transmission are provided in a separated form, then the ease of repair is improved, but the volume of the driving assembly increases
Solution Approach 1:
The patent combines the power source and transmission into one integrated unit, reducing volume while maintaining functional separability for repair purposes through modular internal design.
3Ease of manufacture
If the output shaft of the power source and the input shaft of the automatic transmission are connected by a shaft coupling, then the ease of assembly is improved, but the transmission performance deteriorates due to large impact between shafts
Solution Approach 1:
The output shaft of the power source and the input shaft of the automatic transmission are integrated into a single unified shaft structure, eliminating the shaft coupling interface and its associated impact problems while maintaining ease of assembly through integrated manufacturing.
Solution Approach 2:
The integrated shaft is manufactured as a single piece with varying material properties or structural characteristics along its length to optimize both the power transmission performance and the ease of assembly with different components.
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
This configuration reduces the volume of the driving assembly, enhances transmission performance, and improves driving efficiency by integrating components and optimizing power transmission.
Implementation Method 1
a shifting clutch is provided between the upper gear and the input shaft of the automatic transmission... the shifting clutch is of an electromagnetically driving mode, and comprises a fixed fluted disc, a movable fluted disc and a power winding
Data Source
AI summary
The present disclosure discloses a longitudinally placed vehicle driving assembly having a single power source, which solves the technical problems of the vehicle driving assemblies in the prior art such as larger volumes and poor transmission performances. The driving assembly is connected to a transmission shaft or a vehicle axle half shaft of a vehicle and provided with an automatic transmission. The automatic transmission includes an input shaft (2). A power source (1) is connected to the input shaft (2). An output shaft (10) is provided coaxial with the input shaft (2). An intermediate shaft (9) is provided parallel to the input shaft (2). A first-stage reduction-gear train is installed through the input shaft (2) and the intermediate shaft (9). An Nth-stage reduction-gear train is installed through the intermediate shaft (9) and the output shaft (10), wherein N≥2. Each of the stages of the reduction-gear trains includes a pair of gears having a different transmission ratio. The output shaft (10) of the power source (1) and the input shaft (2) of the automatic transmission are integrally manufactured. A rear cover of the power source (1) and a front housing of the automatic transmission are integrated. The driving assembly is placed in the front of the vehicle, and drives rear wheels of the vehicle.