Bidirectional Hydraulic Pump Assembly for Vehicle Transmission Control
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Solution Overview
Problem
Existing hydraulic pump assemblies for vehicles are complex, heavy, and costly when used in applications involving multiple couplings or gear shifts, as they require additional electrical shift valves and lack bidirectional control, increasing complexity and weight.
Innovation Solution
A reversible hydraulic pump assembly with a motor, hydraulic pump, centrifugal regulator, pressure overflow valve, and check valves that utilize positive or negative voltage for bidirectional control, allowing fluid flow direction to depend on motor rotation, thereby simplifying and reducing the need for additional valves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional electrical shift valves are added to control multiple couplings or gear shifts, then the control capability is improved, but the device complexity and weight increase
Solution Approach 1:
The pump assembly is designed to perform multiple functions by controlling multiple couplings and gear shifts through a single integrated system. The pump can switch between different operating modes (first coupling, second coupling, gear shift) using check valves and flow paths, eliminating the need for separate control valves for each function.
Solution Approach 2:
The patent combines multiple control functions into a single pump assembly with integrated check valves and flow paths. Instead of using separate electrical shift valves for each coupling and gear shift, the system merges all control functions into one unified hydraulic circuit that uses the pump's rotation direction and check valve arrangement to manage multiple actuators.
2Adaptability or versatility
If additional electrical shift valves are added to control multiple couplings or gear shifts, then the control capability is improved, but the weight increases
Solution Approach 1:
The pump assembly is designed to perform multiple functions by controlling multiple couplings and gear shifts through a single integrated system. The pump can switch between different operating modes (first coupling, second coupling, gear shift) using check valves and flow paths, eliminating the need for separate control valves for each function.
Solution Approach 2:
The patent combines multiple control functions into a single pump assembly with integrated check valves and flow paths. Instead of using separate electrical shift valves for each coupling and gear shift, the system merges all control functions into one unified hydraulic circuit that uses the pump's rotation direction and check valve arrangement to manage multiple actuators.
3Ease of operation
If the pump assembly is designed for bidirectional control, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The pump assembly incorporates bidirectional rotation capability that dynamically changes the flow direction based on rotation sense. The check valves are arranged to automatically redirect hydraulic flow depending on whether the pump rotates clockwise or counter-clockwise, enabling dynamic control of different couplings and gear shifts without complex additional valve mechanisms.
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 provides a simplified, cost-effective, and lightweight hydraulic pump assembly capable of bidirectional control, reducing complexity and weight while effectively managing torque control in vehicle systems with multiple couplings or gear shifts.
Implementation Method 1
a centrifugal regulator (106) in connection with a pressure overflow valve (108)
Implementation Method 2
The pump assembly 100 comprises a motor 102 and a hydraulic pump 104
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
A hydraulic pump assembly for a vehicle is provided, comprising an electrical motor, a hydraulic pump driven by the electrical motor, and a centrifugal regulator connected with a pressure overflow valve connected to the oil outlet of the hydraulic pump, characterized in that the pump assembly further comprises at least two input check valves and at least two output check valves arranged such that a first pressure outlet port is formed when the motor is rotating in a first direction, and a second pressure outlet port is formed when the motor is rotating in an opposite direction.