Internal Combustion Engine Piston Intake Exhaust Integration
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Solution Overview
Problem
Conventional internal combustion engines face reliability issues due to the presence of a cylinder head, limited compression ratios, complex mechanical systems, high moving mass, and bulky designs, which affect efficiency and installation in vehicles.
Innovation Solution
A simplified engine design with a minimum number of moving parts, direct mechanical connection between pistons and the output shaft, and integrated intake and exhaust passages within the piston, eliminating the need for a cylinder head and complex force transmission systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cylinder head with valves is used in conventional engines, then intake and exhaust functions are achieved, but the compression ratio is limited and reliability problems occur due to gasket deterioration
Solution Approach 1:
The invention extracts and eliminates the cylinder head from the engine structure. Instead of having a separate cylinder head with valves, the piston itself is designed with integrated intake and exhaust passages and valve mechanisms, removing the need for a cylinder head gasket and associated reliability issues.
Solution Approach 2:
The invention merges the functions of the cylinder head and valves into the piston structure. The piston now performs both the reciprocating motion function and the valve control function, integrating multiple components into a single unified structure that improves reliability.
2Stress or pressure
If a cylinder head and gasket are used, then sealing is achieved, but the compression ratio is limited due to gasket deterioration at high compression ratios
Solution Approach 1:
The invention removes the cylinder head gasket from the system entirely. By integrating the sealing function into the piston-cylinder interface and eliminating the separate gasket component, the engine can achieve higher compression ratios without gasket deterioration limitations.
3Ease of operation
If complex mechanical transmission systems are used for valve control, then valve timing is achieved, but device complexity and moving mass increase
Solution Approach 1:
The invention extracts and eliminates the complex camshaft and connecting rod mechanisms for valve control. The valve timing is achieved through the direct motion of the piston itself, which opens and closes the intake and exhaust passages during its reciprocating stroke, removing the need for separate valve transmission systems.
4Productivity
If a large number of moving parts are used, then engine functions are achieved, but moving mass increases affecting efficiency and reliability
Solution Approach 1:
The invention combines multiple moving parts into fewer integrated components. The piston now serves as both the reciprocating element and the valve mechanism, reducing the total number of moving parts and decreasing moving mass while maintaining all necessary engine functions.
5Power
If conventional engine architecture is used, then power generation is achieved, but the engine is heavy and bulky affecting vehicle installation
Solution Approach 1:
The invention removes the heavy cylinder head and associated valve train components from the engine structure. This extraction of unnecessary mass while maintaining power generation capability through the integrated piston design results in a lighter, more compact engine suitable for vehicle installation.
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 results in a more reliable, efficient, and compact engine with improved compression ratios, reduced weight, and enhanced intake and exhaust efficiency, facilitating easier integration into vehicles.
Implementation Method 1
a chamber (3) designed to accommodate a working fluid intended to undergo combustion within said chamber (3)
Implementation Method 2
pressure variations resulting from the combustion cycles carried out in the chamber
Data Source
Figure 1~2
Figure 3~5
Figure 6~8
AI summary
- Internal combustion engine. - The invention relates to an internal combustion engine comprising: - a chamber designed to receive a working fluid intended to undergo combustion within said chamber, - a first piston (4) and a second piston, both of which contribute to defining the volume of said chamber, said engine being characterized in that: - a first passage is provided through said first piston (4) to connect the interior of the chamber with the exterior, said first passage being designed to expel the burnt fluid resulting from the combustion of the working fluid from the chamber, a second passage is provided through said second piston to connect the interior of the chamber with the exterior, said first passage being designed to supply the chamber with working fluid. - Engines.