Uniblock Engine Structure for Leak-Free High-Compression Operation
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Solution Overview
Problem
Existing internal combustion engines face challenges in improving efficiency, reducing size and weight, increasing access to cleaner fuels, and minimizing emissions such as carbon dioxide, carbon monoxide, nitrogen oxides, and soot production, while also dealing with issues of component separation and leakage.
Innovation Solution
The integration of the cylinder head and cylinder block into a single uniblock component, combined with innovative materials and designs that enhance thermal conductivity, lubrication, and cooling, allows for higher compression ratios and reduced parts, facilitating scalable engine designs from small to large applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cylinder head and cylinder block are combined into a single uniblock component, then mechanical rigidity and reliability are improved, but manufacturing complexity and difficulty in accessing internal areas increase
Solution Approach 1:
The patent combines the cylinder head and cylinder block into a single uniblock component, eliminating the need for gaskets and seals between these major components. This merging improves mechanical rigidity and eliminates potential leak paths while reducing the number of parts and assembly steps required.
2Reliability
If the cylinder head and cylinder block are combined into a single uniblock component, then risk of gasket/seal failures is reduced, but difficulty in accessing internal areas increases
Solution Approach 1:
By merging the cylinder head and block into one piece, the patent eliminates all gasket and seal interfaces between these components, thereby eliminating the risk of gasket failures, leaks, and contamination that plague conventional multi-part designs.
3Ease of manufacture
If conventional multi-component engine design is used, then ease of manufacturing and assembly is improved, but potential leaks of gases and fluids increase
Solution Approach 1:
The uniblock construction eliminates numerous mating surfaces, gaskets, and seals that are inherent in conventional multi-component engine designs. This single-piece architecture eliminates the primary sources of leaks for gases and fluids while actually simplifying the manufacturing process through modern casting and machining techniques.
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 uniblock configuration achieves higher efficiency, reduced emissions, and improved durability, with the ability to withstand extreme compression ratios, while offering flexibility in fuel types and reduced engine size and weight, suitable for various power output needs.
Implementation Method 1
The cylinder sleeve includes a first cylinder sleeve layer having a first thermal conductivity and a second cylinder sleeve layer having a second thermal conductivity
Data Source
AI summary
An internal combustion engine has a uniblock that defines a blind cylinder bore that terminates within the uniblock. A piston is inserted into the cylinder bore from a bottom end of the cylinder bore. Parallel first and second vertical planes extend along first and second lateral sides of the cylinder bore. A cylinder zone being defined between the first and second vertical planes. A crosshead is coupled to the piston. A first crankshaft has a first crankshaft axis that extends parallel to the first vertical plane and that is positioned outside of the cylinder zone. A second crankshaft has a second crankshaft axis that extends parallel to the second vertical plane and that is positioned outside of the cylinder zone. The first crankshaft is coupled to the crosshead with a first connecting rod and the second crankshaft is coupled to the crosshead with a second connecting rod.