Spark plug sealing gasket
A spark plug sealing gasket is an important automotive component, mainly used to ensure the sealing of spark plugs when installed in the engine to prevent the leakage of high-temperature and high-pressure gas.
Function and Importance
The spark plug sealing gasket is a necessary component to ensure effective sealing when the spark plug is installed. It is usually placed at the end of the spiral installation part of the spark plug metal shell to ensure the sealing of the spark plug and prevent the leakage of high-temperature and high-pressure gas in the cylinder.
Material Selection
Due to the high temperature generated by the combustion of the mixture after the spark plug is ignited, the sealing gasket is usually made of metal material instead of ordinary rubber material. Metal materials have better heat resistance and sealing effect.
Type
Spark plug sealing gaskets are generally of two types: laminated gaskets and solid gaskets. Due to the multi-layer structure of the laminated gasket, there is a gap between each layer, and the thickness will change with the change of the installation torque value, which may affect the ignition position of the spark plug and the operation of the engine.
product key technologies
Main Effects
- Sealing: These gaskets can effectively seal the connection between the spark plug tube and the engine block to prevent leakage of oil, coolant, and fuel. Good sealing performance can ensure the normal operation of the engine.
- Heat insulation: These gaskets can isolate the temperature difference between the spark plug tube and the cylinder block to prevent heat transfer from affecting the normal operation of the engine.
main effects
- Shock absorption: The gasket can reduce the damage of the engine vibration to the spark plug tube and extend the service life of the parts.
- Anti-pollution: Good sealing performance can prevent dust, moisture, and other pollutants from entering the engine and protect the engine components.
Technical Challenges and Innovations
In the existing technology, the laminated gasket may lose its sealing effect due to the reduction of elasticity after repeated installation, and the service life is low. In addition, the stacked gasket needs to be precisely positioned during the stamping process, and the pressure head is easy to wear. To solve these problems, a patent proposes a new locking method for spark plug sealing gaskets. This method does not require stamping but realizes automatic locking by flat pressing the outer side of the gasket, which simplifies the process.
Innovative locking method
The proposed new locking method uses a sealing gasket with a curved upturned locking boss. During installation, the gasket is inserted from the ignition end of the spark plug and tightened through the screw hole connection surface on the cylinder body, so that the upturned locking boss is deformed to form a lock to prevent the gasket from falling off.
Product advantages
The innovative spark plug sealing gasket adopts a solid structure and has a longer service life. Due to the use of materials with good elasticity and strong thermal conductivity, the thickness of the gasket does not vary greatly with the installation torque value, and the position of the spark plug in the engine can be accurately located to improve the ignition performance.
Manufacturing process
The gasket is manufactured by using expansion technology or the stamping boss method to produce a sealing gasket with a curved upturned locking boss. The material is usually copper or aluminum, which has good thermal conductivity, fluidity, and ductility.
Inspection specifications
There are clear specifications for the inspection of the sealing gasket inside the spark plug, including appearance inspection, siz,e and shape and position tolerances, etc., to ensure product quality.
Application scenarios
The spark plug sealing ring is installed on the camshaft cover to seal between the spark plug guide and the camshaft cover to prevent gas leakage.
For more customization sizes of sealings, please contact Amy.
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