Nested One-Way Valve Layout for Transmission Oil Retention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing hydraulic control assemblies face complexity in oil path layout when installing a one-way valve to prevent oil from falling into the oil pan during long vehicle periods, leading to issues with creep torque at restarts.
Innovation Solution
A one-way valve configuration involving a cylindrical section and a columnar section with lateral holes, where the columnar section is housed inside a pipe and includes a spring and E-ring for differential pressure control, allowing for simple installation without complicating the oil path layout.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a one-way valve is installed in the hydraulic control assembly to prevent oil from falling into the oil pan, then oil retention is improved, but the layout of the oil path becomes complicated
Solution Approach 1:
The one-way valve is nested within an existing pipe structure in the hydraulic control assembly. The valve body is positioned inside the pipe, utilizing the existing oil path space rather than requiring separate dedicated piping. This nesting approach allows the one-way valve to be integrated into the existing hydraulic system without creating additional complex oil path routes, thereby maintaining simple layout while achieving reliable oil retention.
2Reliability
If the hydraulic control assembly is redesigned to accommodate a one-way valve, then oil sealing is improved, but the overall assembly complexity increases
Solution Approach 1:
The one-way valve structure serves multiple functions simultaneously: it acts as both a flow control device (preventing oil from entering the torque converter during parking) and as an integrated component of the hydraulic control assembly. The valve body, seat, and spring mechanism work together as a unified multi-functional element that can be installed within the existing assembly framework, improving oil sealing without requiring complete redesign of the assembly.
3Reliability
If a traditional one-way valve design is used, then oil flow control is achieved, but installation space requirements increase
Solution Approach 1:
The one-way valve is nested within an existing pipe structure in the hydraulic control assembly. The valve body is positioned inside the pipe, utilizing the existing oil path space rather than requiring separate dedicated piping. This nesting approach allows the one-way valve to be integrated into the existing hydraulic system without creating additional complex oil path routes, thereby maintaining simple layout while achieving reliable oil retention.
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
Enables the one-way valve to be installed in a transmission without complicating the hydraulic control assembly layout, effectively preventing oil return and ensuring proper creep torque functionality at vehicle restarts.
Implementation Method 1
the other end of the columnar section (14) is inserted into a one-side opening section (42) of the cylindrical section (12), so as to block flow of oil
Implementation Method 2
flow of oil being blocked when the other end is inserted into a one-side opening section of the cylindrical section
Data Source
AI summary
A one-way valve includes: a cylindrical section, one end of which is inserted into and fixed to an inside of a pipe, the cylindrical section including a through-hole through which oil is passed in an axial direction; and a columnar section housed inside the pipe and including, in another end thereof, a plurality of lateral holes through which oil is passed, flow of oil being blocked when the other end is inserted into a one-side opening section of the cylindrical section.