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Knowledge of glow plug
2020-12-07   author:admin

The Glow plug, also known as the preheat plug. Electric plugs provide heat to improve starting performance during cold periods when the engine is cooling. At the same time, the electric plug is required to have the characteristics of rapid heating and persistent high temperature state.


There are several different types of preheating plugs, of which three are most widely used: the conventional type; Temperature-controlled type (including preheating plugs for conventional preheating devices and new super preheating devices); Low voltage type for conventional super preheater. A preheating plug is screwed into the wall of each combustion chamber of the engine. The preheating plug housing has a preheating plug resistance coil mounted in the pipe. Current flows through the resistance coil, heating the pipe. The tube has a large surface area, which allows it to generate more heat. The inside of the pipe is filled with insulating material to prevent the resistance coil from coming into contact with the inside of the pipe due to vibration. The rated voltage of the various preheating plugs varies depending on the battery voltage used (12V or 24V) and the preheating device. Therefore, it is important to use the correct type of preheating plug. Improper use of preheating plug will cause premature combustion or insufficient heating.


Metal electric plug characteristics


· Opening speed Preheating time: the temperature can reach above 850 Degrees Celsius in 3 seconds


· Post heating time: After the engine starts, the electric plug is kept at a temperature of (850 ° C) for 180 seconds to reduce contaminants.


· Operating temperature: about 1000 Degrees Celsius.


Ceramic electric plug characteristics


· Preheating time: The temperature can reach above 900 degrees Celsius in 3 seconds


· Post heating time: After the engine starts, the electric plug is kept at a temperature (900 ° C) for 600 seconds to reduce contaminants.


· Operating temperature: about 1150 ℃.


Features of quick preheating metal electric plug


· Preheating time: The temperature can reach above 1000 Degrees Celsius in 3 seconds


· Post heating time: After the engine starts, the electric plug is kept at the temperature (1000 ° C) for 180 seconds to reduce contaminants.


· Operating temperature: about 1000 Degrees Celsius


·PWM signal control


Ceramic heating plug for quick preheating


· Preheating time: The temperature can reach above 1000 Degrees Celsius in 2 seconds


· Post heating time: After the engine starts, the electric plug is kept at a temperature (1000 ° C) for 600 seconds to reduce contaminants.


· Operating temperature: about 1150 ℃


·PWM signal control


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