Thermal Bypass Valve With Offset Channels for Transmission Cooling
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Solution Overview
Problem
Existing thermal bypass systems in automotive transmissions suffer from issues such as overheating, inconsistent temperature control, silicon pack failures, valve sticking, and reduced valve clearance, leading to potential transmission damage and increased maintenance costs, and these issues are not adequately addressed by existing solutions like the Mason valve, which is limited to specific transmission locations.
Innovation Solution
A thermal bypass control valve designed for a cooler block with offset channels, featuring a plug, cap, valve seat apparatus, stabilizing spring, and valve spring, which is insertable into the cooler line block to regulate fluid flow and maintain consistent temperature control across various transmission models.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a thermal bypass control valve is installed in a cooler line block with offset channels, then temperature control consistency is improved, but device complexity increases due to the specialized valve structure with plug, cap, valve seat apparatus, and dual springs
Solution Approach 1:
The valve is divided into distinct functional components: a plug element for flow control, a cap for sealing, a valve seat apparatus for positioning, and dual springs (valve spring and stabilizing spring) for force application. This segmentation allows each component to be optimized for its specific function while assembling into a cohesive unit that fits the cooler line block.
Solution Approach 2:
The valve components are nested within each other: the valve member fits within the valve seat apparatus, which is contained within the cap. The stabilizing spring is positioned within the valve assembly, and the entire valve unit is installed within the cooler line block's bore. This nested structure maximizes space utilization and ensures proper alignment of components.
2Reliability
If the valve ensures constant fluid flow and immediate cooling system fill, then overheating is prevented, but manufacturing precision requirements increase to ensure proper valve clearance and flow regulation
Solution Approach 1:
The valve design incorporates adjustable parameters including spring force (through selection of valve spring and stabilizing spring with different rates and pre-loads), orifice size (through plug geometry), and seating pressure (through valve seat apparatus positioning). These parameters can be tuned during manufacturing to achieve the desired balance between constant flow assurance and acceptable clearance tolerances.
Solution Approach 2:
The dual-spring design provides beforehand cushioning by ensuring that the stabilizing spring maintains minimum valve clearance even when the valve spring force varies due to wear or temperature changes. This pre-established clearance buffer prevents complete flow closure and ensures continuous cooling system fill under varying operating conditions.
3Adaptability or versatility
If the valve provides reliable temperature regulation across various transmission models, then adaptability is improved, but device complexity increases compared to location-specific valves like the Mason valve
Solution Approach 1:
The valve is designed as a universal component that can be installed in cooler line blocks with offset channels across various transmission models. The standardized bore fit and functional design allow the same valve structure to regulate temperature in different transmission systems, eliminating the need for model-specific valve variations while maintaining effective temperature control.
4Productivity
If the valve uses offset channels for outflow line, then fluid flow distribution is improved, but manufacturing precision requirements increase for channel alignment and valve positioning
Solution Approach 1:
The valve and cooler line block are designed with asymmetric offset channels that deliberately position the outflow line away from the central axis. This asymmetric geometry optimizes fluid flow distribution by directing cooled fluid to specific transmission components that require cooling. The valve components are accordingly positioned to maintain proper clearance and sealing in this offset configuration.
Solution Approach 2:
The offset channel design provides local quality enhancement by directing cooled fluid specifically to areas of the transmission that generate the most heat (such as the torque converter and gear sets). The valve positioning and plug geometry are locally optimized to ensure proper flow distribution through these offset channels, maintaining effective cooling where it is most needed.
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 proposed valve ensures constant fluid flow and immediate cooling system fill without a warm-up cycle, preventing overheating and reducing maintenance costs by providing reliable temperature regulation and fluid distribution.
Implementation Method 1
a stabilizing spring configured to be positionable between the plug and the valve seat apparatus
Implementation Method 2
a valve spring, the valve member spring securable at a base end against a bottom of the bore and against the valve member at a valve spring end, wherein the valve spring secures the valve member against a surface of cavity in a closed configuration, and the valve spring compresses to move the valve member away from the surface of the cavity in an open configuration
Implementation Method 3
A thermal bypass control valve designed for a cooler block with offset channels
Data Source
AI summary
A thermal control valve includes a plug, a valve seat apparatus, and a valve member positionable within a cooler line block with offset channels for an outflow line between a transmission and a transmission fluid cooler. The plug and valve seat apparatus are kept at a fixed positioned relative to each other by a first spring. A second spring is positionable within a connecting passage between the outflow line and an inflow line. The valve member is positioned between the second spring and the valve seat apparatus to move between a closed configuration to cool fluid, and a cooler bypass position to bypass the transmission fluid cooler when outflow line pressure becomes too high.