Modular Adapter Manifold for Hydrostatic Transmission Pump
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Solution Overview
Problem
Conventional hydrostatic transmission designs integrate pump and motor components, limiting flexibility and interchangeability across different configurations, which restricts the ability to use the same components in various light vehicle models.
Innovation Solution
A modular adapter manifold design that allows the hydrostatic transmission pump to be mounted separately from the motor, providing a fluid connection between the pump and motor through a mounting manifold with specific porting and fluid passages, enabling flexible mounting and operation across different vehicle configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If pump and motor are integrated in conventional hydrostatic transmission designs, then structural compactness is achieved, but flexibility and interchangeability across different vehicle configurations are limited
Solution Approach 1:
The patent divides the hydrostatic transmission into separate modular components: a pump assembly with its own housing and porting manifold, a motor assembly, and a separate adapter manifold. This segmentation allows each component to be independently manufactured, tested, and replaced, significantly improving flexibility and interchangeability across different vehicle configurations while maintaining functional integration through the adapter manifold's fluid passages.
2Adaptability or versatility
If pump and motor are mounted separately using a modular adapter manifold, then flexibility and adaptability are improved, but the number of connection interfaces and potential leak points increase
Solution Approach 1:
The adapter manifold merges multiple functions into a single component: it provides structural mounting support for the pump assembly, contains integrated fluid passages for hydraulic fluid flow, and provides sealed connection interfaces for both the pump and motor assemblies. This consolidation reduces the number of separate connection points compared to traditional flexible hose connections, thereby improving reliability while maintaining modular flexibility.
Solution Approach 2:
The adapter manifold acts as an intermediary component between the pump assembly and motor assembly, providing a rigid, sealed fluid connection pathway. This intermediary structure eliminates the need for flexible hoses and multiple connection fittings, reducing potential leak points while maintaining the modular separation of pump and motor assemblies.
3Ease of manufacture
If an adapter manifold is introduced to connect separate pump and motor assemblies, then component interchangeability is improved, but device complexity and assembly steps increase
Solution Approach 1:
The adapter manifold is designed as a universal interface component that can accommodate different pump and motor assemblies through standardized mounting patterns and fluid connection interfaces. This multi-functional design allows the same adapter manifold to be used across various vehicle models and transmission configurations, simplifying manufacturing and inventory management while enabling easy component interchangeability.
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 modular design enhances flexibility and modularity, allowing for easier assembly and maintenance, reduces the number of parts, and provides a compact solution suitable for zero-turn radius vehicles by separating the pump and motor, thus improving the overall efficiency and adaptability of hydrostatic transmission systems.
Implementation Method 1
Rotation of the hydraulic pump against a moveable swash plate creates an axial motion of the pump pistons that forces hydraulic fluid through the hydraulic porting to the hydraulic motor
Implementation Method 2
one or more fluid passages extending between the pump interface porting and the motor interface porting for communicating fluid therebetween
Data Source
AI summary
A hydrostatic transmission subassembly for a vehicle includes an adapter manifold and a hydraulic pump mounted to the adapter manifold. The pump includes a pump housing and a pump porting manifold including pump porting for communicating fluid to and from the pump. The adapter manifold may include a mounting section adapted for mounting to the vehicle and a fluid interface section extending from the mounting section. The fluid interface section includes a pump interface having pump interface porting, in which the pump interface engages with the pump porting manifold to fluidly connect the pump interface porting with the pump porting. When the mounting manifold is mounted to the vehicle via the mounting section, the mounting manifold supports the hydraulic pump. The fluid interface section also includes a motor interface having motor interface porting for fluidly connecting to a motor, which enables the mounting manifold to fluidly connect the pump and motor.