Auxiliary Power Take-off Assembly Decoupling Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing auxiliary power take-off assemblies in vehicle transmissions are complex and require significant installation effort, making them difficult to retrofit and leading to noise and power losses due to unnecessary component co-rotation when not in use.
Innovation Solution
An auxiliary power take-off assembly integrated into the transmission housing with a shifting element that can be retrofitted, allowing the drive output element to be connected or decoupled from the drive output shaft, eliminating the need for additional components and reducing noise and power losses by allowing components to be disconnected when not in use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an auxiliary power take-off assembly is permanently connected to the driveshaft, then it can be operated continuously, but it produces noise and power losses when not in use
Solution Approach 1:
The patent implements a dynamic connection system where the auxiliary power take-off assembly can be selectively engaged or disengaged from the driveshaft through a shifting element. This allows the system to transition between connected and disconnected states, enabling continuous operation when needed while eliminating power losses and noise when the auxiliary aggregate is not in use.
2Ease of operation
If a shifting element is permanently fitted in the transmission, then the auxiliary power take-off can be decoupled, but the structure becomes more complex
Solution Approach 1:
The patent merges the shifting element directly into the transmission housing structure, integrating the decoupling mechanism with the existing transmission components. This consolidation approach enables the auxiliary power take-off to be selectively engaged or disengaged while minimizing additional structural complexity, as the shifting element utilizes the transmission's existing spatial and structural framework.
3Ease of manufacture
If the auxiliary power take-off assembly is integrated into the transmission housing, then installation effort is reduced, but access for maintenance becomes more difficult
Solution Approach 1:
The patent segments the transmission housing to provide accessible openings or removable sections that allow easy access to the auxiliary power take-off assembly for maintenance and repair. This segmentation approach enables the assembly to be integrated into the transmission housing for simplified installation while simultaneously providing designated access points that facilitate future maintenance without requiring complete disassembly of the transmission.
Data Source
AI summary
An auxiliary power take-off assembly in a motor vehicle transmission having a torque converter, transmission input and output with a drive shaft on the transmission input. The drive shaft is permanently connected to a drive motor of the vehicle by a pump shaft of the torque converter, a transmission output shaft at the transmission output and a transmission chain having drive input and output elements. A transmission power take-off shaft on the transmission output and a transmission chain having at least a drive element and a power take-off element of which the power take-off element can be connected to an additional unit to be driven, and having a switching element. The power take-off element is arranged on a power take-off shaft and can be connected to the power take-off shaft via the switching element, which is arranged to act between power take-off shaft and the power take-off element.