Hydraulic Coupling PTO Layout for Compact Multi-Pump Integration
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Solution Overview
Problem
Existing powertrain systems with integrated power take-off (PTO) interfaces increase transmission complexity and size, leading to prolonged and costly manufacturing processes.
Innovation Solution
A driveline system incorporating a hydraulic coupling with a PTO assembly that includes an input gear directly coupled to the output interface of the hydraulic coupling, an idler gear, and multiple pump gears, allowing for space-efficient integration of multiple PTO interfaces within the hydraulic coupling housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If PTO interfaces are integrated into the transmission, then PTO capabilities are expanded, but transmission complexity and size increase
Solution Approach 1:
The PTO assembly is extracted from the transmission and integrated into the hydraulic coupling instead. The PTO assembly includes pump gears that mesh with an input gear coupled to the hydraulic coupling output, allowing PTO functionality to be provided outside the transmission while maintaining power take-off capabilities.
Solution Approach 2:
The PTO assembly is merged with the hydraulic coupling by coupling the input gear to the hydraulic coupling output. This combines the PTO functionality with the hydraulic coupling structure, allowing both components to share space and reduce overall system complexity.
2Adaptability or versatility
If PTO boxes are added to provide PTO functionality, then PTO capabilities are expanded, but driveline complexity increases
Solution Approach 1:
The PTO assembly is merged with the hydraulic coupling by coupling the input gear to the hydraulic coupling output. This combines the PTO functionality with the hydraulic coupling structure, allowing both components to share space and reduce overall system complexity.
Solution Approach 2:
The hydraulic coupling serves multiple functions: it provides torque conversion between the prime mover and transmission, and simultaneously serves as the mounting point for the PTO assembly. This multi-functionality eliminates the need for separate PTO boxes and reduces driveline complexity.
3Adaptability or versatility
If multiple PTO interfaces are provided, then PTO versatility is enhanced, but manufacturing complexity and cost increase
Solution Approach 1:
The PTO assembly is segmented into modular components including the input gear, pump gears, and multiple pump adapters that can be independently manufactured and then assembled. This segmentation allows for simplified manufacturing of individual components while achieving multiple PTO interfaces through modular assembly.
Solution Approach 2:
The hydraulic coupling serves multiple functions: it provides torque conversion between the prime mover and transmission, and simultaneously serves as the mounting point for the PTO assembly. This multi-functionality eliminates the need for separate PTO boxes and reduces driveline complexity.
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 solution enables compact and efficient incorporation of multiple PTO interfaces, reducing the complexity and size of the driveline system, thereby enhancing applicability and reducing manufacturing costs.
Implementation Method 1
a hydraulic coupling (e.g., a torque converter)... The hydraulic coupling includes an impeller, a stator, and a turbine
Implementation Method 2
The PTO assembly includes an input gear that is directly coupled to an output of the hydraulic coupling... a first pump gear that is in mesh with the input gear
Data Source
AI summary
A driveline system and driveline operating method are provided herein. In one example, the driveline system includes a hydraulic coupling designed to rotationally couple to a prime mover and an output interface designed to rotationally couple to a downstream driveline component, and a power take-off (PTO) assembly. The PTO assembly includes a first pump gear rotationally coupled to an input gear that is directly coupled to the output interface, where the first pump gear is designed to rotationally couple to a first pump via a first pump shaft interface and a first pump adapter designed to mount to the first pump.