Auxiliary Drive Train Ratio Adaptation via Transmission Gearing
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Solution Overview
Problem
Existing motor vehicle drive train devices lack standardization across various variants, requiring multiple axle drives for different drive transmission ratios, which complicates manufacturing and adaptation for different vehicle models.
Innovation Solution
The motor vehicle drive train device features axle drives for both main and auxiliary drive trains with different transmission ratios, allowing the auxiliary drive train's transmission ratio to be adjusted via a transmission gearing system, enabling standardization across various models without the need for additional axle drives, with the main drive train's axle drive having a transmission ratio greater than 1, typically between 2 and 3.4, and the transmission gearing ratio not equal to 1 to match the main drive train's ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate axle drives with different transmission ratios are used for main and auxiliary drive trains, then adaptability to different vehicle models is improved, but device complexity increases due to requiring multiple axle drives
Solution Approach 1:
The auxiliary drive train is designed with a universal axle drive that can serve multiple vehicle models. By incorporating a transmission gearing system with variable transmission ratios, the same auxiliary axle drive can be adapted to different main drive train transmission ratios, making it universally applicable across various vehicle models without requiring model-specific axle drives.
Solution Approach 2:
The transmission gearing in the auxiliary drive train is designed with adjustable transmission ratios. This dynamic capability allows the auxiliary drive train to adapt its transmission ratio to match different main drive train configurations, enabling the same physical axle drive to work with multiple vehicle models having different transmission requirements.
2Adaptability or versatility
If multiple axle drives with different transmission ratios are used for various vehicle models, then adaptability is improved, but manufacturing complexity increases
Solution Approach 1:
The auxiliary axle drive is designed as a universal component that can be manufactured once and used across multiple vehicle models. The transmission gearing system allows this single auxiliary axle drive design to accommodate different transmission ratio requirements, eliminating the need to manufacture multiple variants of auxiliary axle drives for different models.
Solution Approach 2:
The transmission ratio of the auxiliary drive train is adjusted by changing the parameters of the transmission gearing system rather than by designing different axle drives. This parameter-based adaptation allows the same auxiliary axle drive to be used with different main drive train transmission ratios, simplifying manufacturing by standardizing the auxiliary axle drive design.
3Ease of manufacture
If the auxiliary drive train uses the same transmission ratio as the main drive train, then standardization is improved, but adaptability to different vehicle models deteriorates
Solution Approach 1:
The transmission gearing system in the auxiliary drive train is designed with adjustable transmission ratios, making it dynamic rather than fixed. This allows the auxiliary drive train to standardize on a common axle drive design while still adapting to different vehicle models by adjusting the transmission ratio through the variable gearing system.
Solution Approach 2:
The auxiliary drive train is segmented into two independent functional parts: a standardized universal axle drive and an adjustable transmission gearing system. This segmentation allows the axle drive to be manufactured once for all models while the transmission ratio can be adjusted through the gearing system to match different vehicle requirements.
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 solution allows for the standardization of auxiliary drive trains across various vehicle models by adjusting drive transmission ratios, simplifying manufacturing and ensuring equal drive transmission ratios between main and auxiliary drive trains, enhancing the motor vehicle drive train device's efficiency and versatility.
Implementation Method 1
a transmission gearing for transforming a drive transmission ratio of the auxiliary drive train to a drive transmission ratio of the main drive train
Data Source
AI summary
In a motor vehicle drive train device with a transmission output shaft, a main drive train driven by the transmission output shaft, which has an axle drive for driving a main drive axle, an auxiliary drive train driven by the transmission output shaft, which has an axle drive for driving an auxiliary drive axle, a clutch unit for the switchable connection of the axle drive to the transmission output shaft, the axle drive of the main drive train and the axle drive of the auxiliary drive train have different transmission ratios and a transmission gearing for adapting a drive transmission ratio of the auxiliary drive train to a drive transmission ratio of the main drive train is adapted to compensate for the different transmission ratios of the main and the auxiliary drive axles.