Encapsulated Transmission Dampener for Reamed Bore Sealing
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Solution Overview
Problem
Existing automatic transmission dampeners face issues with wear and hydraulic stress, leading to structural weakness and failure, particularly in bores of varying sizes due to reaming, which compromises the hydraulic integrity and functionality.
Innovation Solution
A single encapsulated oscillation dampener assembly with a capsule housing a piston and spring, utilizing two elastomeric rings for sealing, is designed to fit into both reamed and un-reamed bores, providing improved stability and hydraulic integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single dampener design is used for both reamed and un-reamed bores, then adaptability is improved, but sealing reliability deteriorates due to size variations
Solution Approach 1:
The patent applies parameter changes by providing two different sized elastomeric rings (first ring with larger cross-section for un-reamed bores, second ring with smaller cross-section for reamed bores) to accommodate variations in bore dimensions while maintaining effective sealing. This allows the same dampener capsule design to adapt to different bore conditions without compromising hydraulic integrity.
Solution Approach 2:
The elastomeric rings serve as intermediary sealing elements between the dampener capsule and the bore wall. By selecting the appropriate ring size based on bore condition, the system mediates between the fixed dampener design and the variable bore dimensions, ensuring reliable sealing in both reamed and un-reamed configurations.
2Ease of operation
If the piston is exposed to high hydraulic stress in varying bore sizes, then functionality is maintained, but structural strength deteriorates leading to failure
Solution Approach 1:
The elastomeric rings act as intermediary sealing elements that distribute hydraulic loads more evenly across the piston surface. By providing proper sealing contact, they prevent concentrated stress points that would otherwise lead to piston failure, thereby protecting the piston structure while maintaining hydraulic functionality.
Solution Approach 2:
The elastomeric rings provide beforehand cushioning by absorbing and distributing hydraulic pressure before it reaches the piston. This pre-cushioning effect protects the piston from peak stresses that would otherwise cause structural failure, especially in the challenging environment of varying bore sizes.
3Reliability
If the dampener is designed for precise fit in un-reamed bores, then sealing is improved, but adaptability to reamed bores deteriorates
Solution Approach 1:
The patent applies parameter changes by offering two distinct elastomeric ring sizes with different cross-sectional dimensions. The first ring size provides precise fitting and sealing for un-reamed bores, while the second ring size accommodates the larger dimensions of reamed bores. This parameter variation enables the system to achieve reliable sealing across both bore types.
Solution Approach 2:
The system exhibits dynamic adaptability through the selectable ring configuration. By choosing the appropriate ring size based on bore condition, the sealing interface dynamically adjusts to match the specific bore geometry, ensuring optimal sealing effectiveness whether the bore is reamed or un-reamed.
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 extends the dampener lifespan, enhances hydraulic stability, and maintains functionality by reducing hydraulic stress on the piston, making it virtually unbreakable and adaptable to varying bore sizes.
Implementation Method 1
two elastomeric rings configured to be installed in a groove along an outer surface of the capsule... such that a fluid-tight seal is formed between the two elastomeric rings and a dampener bore
Implementation Method 2
a capsule housing an internal piston and spring, the spring positioned within and between both the piston and capsule
Implementation Method 3
oscillation dampeners... to 'quiet' or stabilize solenoid output pressure
Data Source
AI summary
A dampener assembly includes a capsule housing an internal piston and spring, the spring positioned within and between both the piston and capsule. The capsule is generally cylindrical with an opening at a first end to accept the piston into an inner cylindrical channel of the capsule. A vent is positioned along a second end of the capsule to release pressure as the piston moves back and forth along the inner channel in response to fluid pressure in a transmission and counteracting force from the spring. The capsule is installed in either a reamed or unreamed bore and acts as a new bore. The dampener assembly is sealed to the bore by one or more elastomeric rings.