Switch Valve Filter Integration for Variable Compression Engine Rods
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Solution Overview
Problem
Internal combustion engines with fixed compression ratios face issues of 'knocking' under full load operations, and existing connecting rod systems are vulnerable to contamination from hydraulic fluid particles, which can impair the function of sensitive components.
Innovation Solution
A switch valve with integrated filter elements in its connections and supply conduit, utilizing sieves or other filter materials to prevent contaminants from reaching hydraulic components, ensuring robust operation and maintaining the integrity of the connecting rod without complex modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If filter elements are integrated into the switch valve connections, then protection against contaminants is improved, but device complexity increases
Solution Approach 1:
The filter elements are integrated directly into the switch valve body, merging the filtering function with the valve structure. This eliminates the need for separate filter components and reduces overall device complexity while maintaining reliable contaminant protection.
Solution Approach 2:
The switch valve is designed to perform multiple functions: flow control, switching, and filtration. By incorporating filter elements into the valve connections, the same component structure serves both hydraulic control and contamination protection purposes.
2Reliability
If filter elements are integrated into the switch valve, then protection against contaminants is improved, but manufacturing complexity increases
Solution Approach 1:
The filter elements are manufactured as integral parts of the switch valve body through casting or molding processes. This merging of components eliminates separate assembly steps for filters while ensuring consistent contaminant protection.
Solution Approach 2:
The manufacturing process parameters are optimized to accommodate filter element integration. The valve body is designed with specific geometric parameters that allow filter incorporation during standard manufacturing processes, avoiding the need for complex post-processing or assembly operations.
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 effectively filters contaminants from hydraulic fluid, preventing damage to sensitive components and ensuring long-term, safe operation of the connecting rod and switch valve, even under variable compression conditions.
Implementation Method 1
The switch valve (6) includes at least one filter element (14, 15, 16) in the portion of the connections
Data Source
AI summary
A switch valve for controlling a hydraulic fluid flow of a connecting rod for an internal combustion engine with variable compression with an eccentrical element adjustment arrangement for adjusting an effective connecting rod length, the switch valve including a valve housing including a first operating connection and a second operating connection and a supply connection, wherein at least one filter element is arranged in a portion of the first operating connection or the second operating connection or the supply connection. The switch valve is advantageously used in a connecting rod for an internal combustion engine with variable compression.