Gas Engine Precombustion Chamber Tip Disassembly Groove
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Solution Overview
Problem
Conventional precombustion chamber structures for gas engines face difficulties in disassembly, suffer from unreliable sealing leading to gas leakage, and have a high risk of check valve damage due to backflow, which hampers maintenance and reduces engine performance.
Innovation Solution
The precombustion chamber structure includes a tool insert groove for easy disassembly, enhanced sealing with O-rings around the spark plug and check valve, a longer gas supply passage to reduce backflow, and a heat-dissipating precombustion chamber bushing made of copper or its alloys to prevent gas leakage and extend component life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the precombustion chamber tip is tightly coupled to the water jacket for reliable sealing, then gas leakage is prevented, but disassembly and maintenance become difficult
Solution Approach 1:
The precombustion chamber tip is designed as a separable component that can be divided into multiple sections or detached from the water jacket. This segmentation allows the tip to be removed for maintenance while maintaining a reliable seal during operation, resolving the contradiction between sealing reliability and ease of repair.
Solution Approach 2:
The coupling mechanism between the precombustion chamber tip and water jacket is designed to be dynamic rather than static. It provides a tight, sealed connection during engine operation but allows for easy disassembly when maintenance is needed, enabling the system to adapt between operational reliability and maintenance accessibility.
2Ease of manufacture
If the gas supply passage is kept short for simple structure, then manufacturing is easier, but combustible gas flows backwards causing check valve damage
Solution Approach 1:
An intermediary component or structure is introduced in the gas supply passage to prevent backflow of combustible gas toward the check valve. This intermediary element blocks the harmful backflow while maintaining a relatively simple overall structure that remains easy to manufacture, resolving the contradiction between manufacturing simplicity and check valve reliability.
3Duration of action of stationary object
If the precombustion chamber tip is made robust for high-temperature resistance, then heat dissipation is reduced, but component lifetime is extended
Solution Approach 1:
The precombustion chamber tip employs local quality variation where different regions have different thermal properties. Areas requiring high-temperature resistance are made robust, while other regions are designed for better heat dissipation. This localized differentiation allows the component to achieve extended lifetime in critical areas without compromising overall heat dissipation 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
Facilitates maintenance, reduces gas leakage, prevents check valve damage, optimizes fuel gas injection, and extends the lifespan of precombustion chamber components by ensuring reliable sealing and efficient heat dissipation.
Implementation Method 1
a heat-dissipating precombustion chamber bushing made of copper or its alloys to prevent gas leakage and extend component life
Implementation Method 2
a spark plug for igniting fuel gas injected into the precombustion chamber formed in the body
Implementation Method 3
A coolant circulation passage 12a for circulation of coolant is formed in the water jacket 12 to prevent the spark plug 20 from being overheated
Data Source
AI summary
Disclosed herein is a precombustion chamber structure for a gas engine. The precombustion chamber structure is configured to facilitate disassembly of a precombustion chamber tip, thus making maintenance, repair or inspection of the precombustion chamber easy. For this, the precombustion chamber structure includes: a body (110) having a main body (111), a water jacket (112) and a precombustion chamber tip (113); and a spark plug (120) for igniting fuel gas injected into the precombustion chamber (114) formed in the body (110). The precombustion chamber structure ignites fuel gas and supplies the ignited fuel gas into a main combustion chamber. A tool insert groove (1131) is formed in the junction between the precombustion chamber tip and the water jacket. The tool insert groove (1131) allows a tool for disassembly to be inserted into a space between the precombustion chamber tip and the water jacket.