Cylinder Head Bite Ring Sealing for Combustion Gas Leakage
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Solution Overview
Problem
Internal combustion engine systems face issues with combustion gas leakage through the cylinder head and cylinder block interface, leading to damage to sensitive components and reduced engine performance due to high pressure and temperature conditions, particularly in high horsepower diesel and natural gas engines.
Innovation Solution
The implementation of bite rings on the cylinder liner, expansion grooves in the cylinder head, and vent passages to direct leaked combustion gases away from sensitive components, along with sealing rings and grooves in the head gasket to manage and reduce pressure and flow of escaping gases, enhancing the seal integrity and reducing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a head gasket is used to seal the cylinder head to the cylinder block, then sealing is achieved, but combustion gas leakage still occurs at the interface under high pressure and temperature conditions
Solution Approach 1:
The sealing system is divided into multiple segments: the head gasket provides primary sealing, while bite rings provide secondary sealing. This segmentation allows each component to address specific aspects of the sealing problem, with the bite rings specifically designed to prevent combustion gas leakage that penetrates the head gasket seal.
Solution Approach 2:
Bite rings are introduced as intermediary elements between the head gasket and the combustion gases. These rings act as a backup sealing mechanism that intercepts combustion gases before they can escape through the head gasket interface, thereby mitigating the harmful effects of gas leakage.
2Object-affected harmful factors
If bite rings are added to enhance sealing, then combustion gas leakage is reduced, but device complexity increases
Solution Approach 1:
The bite rings are integrated with the head gasket assembly, combining multiple sealing functions into a unified structure. The bite rings work in conjunction with the head gasket to provide both primary and secondary sealing, reducing the need for separate complex sealing systems while effectively preventing combustion gas leakage.
3Stress or pressure
If expansion grooves and vent passages are implemented to manage combustion gases, then pressure on the seal is reduced, but device complexity increases
Solution Approach 1:
Expansion grooves and vent passages are incorporated into the cylinder head structure to extract and redirect combustion gases away from the seal interface. This extraction of excess pressure and gas flow reduces the stress on the sealing components while maintaining a relatively simple overall structure through integrated design.
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 mitigates combustion gas leakage, reduces pressure on sensitive components, and prevents cross-contamination, maintaining engine performance and extending the engine's operational life while being retrofittable without modifying the engine's core components.
Implementation Method 1
The cylinder head may define a first vent passage that extends between the expansion groove and a second vent passage in the cylinder head that is fluidly connected to an outside environment
Implementation Method 2
the channel may be structured to direct leaked combustion gases from the upper side of the liner to a low pressure region of the combustion cylinder, to a space below a piston of the internal combustion engine system
Data Source
AI summary
An internal combustion engine system includes a cylinder block, a plurality of bite rings, a cylinder head, and a head gasket. The cylinder block defines a combustion cylinder. The plurality of bite rings encompass the cylinder. The cylinder head is coupled to the cylinder block and covers the combustion cylinder. The head gasket is disposed between the cylinder head and the cylinder block and is structured to engage with the plurality of bite rings. The cylinder head may further include an expansion groove that is disposed between adjacent ones of the plurality of bite rings and extends in a circumferential direction around the cylinder head.