Integrated Check Valve Connecting Rod for Variable Compression
Solution Overview
Problem
Existing connecting rods for variable compression internal combustion engines are complex and costly to produce and assemble, with existing check valves requiring multiple components and additional mounting processes.
Innovation Solution
A connecting rod design featuring a check valve with a closure element and valve seat integrated into the bore hole of the connecting rod body, eliminating the need for separate components and mounting processes, and utilizing an eccentrical element adjustment arrangement to adjust the effective connecting rod length with hydraulic fluid support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a check valve with multiple separate components is used in the connecting rod, then the sealing reliability is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The invention merges the closure element and valve seat into a single integrated check valve component that is introduced as one piece into the connecting rod. This integration reduces the number of separate components while maintaining the sealing function through the coordinated design of the closure element and valve seat within the single component structure.
Solution Approach 2:
The invention introduces an intermediary element (the integrated check valve component) that combines multiple functions into one unit. This intermediary component serves both as the closure element and provides the valve seat function, thereby simplifying the overall structure while ensuring reliable sealing through its dual-function design.
2Reliability
If multiple separate check valve components are used, then the sealing function is improved, but the ease of manufacture and assembly deteriorates
Solution Approach 1:
The check valve is designed as a single integrated component combining the closure element and valve seat, which eliminates the need for multiple separate mounting operations. This merging of functions into one component significantly simplifies the assembly process while maintaining effective sealing through the integrated design.
Solution Approach 2:
The integrated check valve component is designed to be self-contained, with the closure element and valve seat already positioned and configured within the single component. This self-service design eliminates the need for complex assembly procedures and additional mounting processes, making installation straightforward while ensuring proper sealing function.
3Manufacturing precision
If separate mounting processes are used for check valve components, then the positioning precision is improved, but the productivity and manufacturing efficiency decrease
Solution Approach 1:
By combining the closure element and valve seat into a single integrated component with pre-established positional relationships, the invention eliminates multiple separate mounting processes. The positioning precision is maintained through the precise internal configuration of the integrated component, while manufacturing efficiency is improved by reducing the number of assembly steps.
Solution Approach 2:
The closure element and valve seat are pre-positioned and integrated into a single component during manufacturing, establishing their precise relative positions beforehand. This preliminary action eliminates the need for multiple separate positioning and mounting operations during assembly, thereby maintaining positioning precision while significantly improving manufacturing efficiency.
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 design simplifies production and assembly, reduces costs, and ensures high reliability and service life by minimizing components and integrating the check valve directly into the connecting rod body, while maintaining adjustable compression ratios.
Implementation Method 1
the check valve includes a closure element and a valve seat, wherein the closure element blocks a fluid path in a blocking condition of the closure element by contacting the valve seat
Implementation Method 2
utilizing an eccentrical element adjustment arrangement to adjust the effective connecting rod length with hydraulic fluid support
Data Source
AI summary
A connecting rod for a variable compression internal combustion engine, the connecting rod comprising: at least one hydraulic chamber configured in a connecting rod body, wherein the at least one hydraulic chamber is connectable by a check valve with a bearing shell of the connecting rod or with a tank, wherein the check valve includes a closure element and a valve seat, wherein the closure element contacts the valve seat in a blocking position of the closure element and blocks a fluid path, and wherein the closure element is arranged in a bore hole of the connecting rod body and the valve seat is introduced into the connecting rod body.