Spark plug over-limit temperature overlong alarm device

Abstract

The invention discloses a spark plug over-limit temperature overlong alarm device which comprises a shell. An inner cavity is formed in the shell, a temperature sensing block is arranged on the left side wall of the shell in a penetrating mode, an indicator lamp is fixedly arranged on the outer end face of the upper side wall of the shell, a shaft wheel device is arranged in the inner cavity, andthe shaft wheel device comprises a magnetic sensor fixedly connected with the right end face of the temperature sensing block. According to the spark plug, when the spark plug works exceeding the limited temperature for a long time, what is indicated is that components of the spark plug go wrong, an alarm is given out at the moment, the phenomena that carbon deposition formed on the insulator skirt causes electric leakage between electrodes, spark plug flashover is affected, and blazing fire happens to the mixed gas can be prevented, the service life of the engine is prolonged, and the safetyof a driver is improved.

Description

technical field [0001] The invention relates to the technical field of spark plug temperature, in particular to an alarm device for a spark plug exceeding a limit temperature for too long. Background technique [0002] The spark plug is an important component to support the work of the gasoline engine. In the gasoline engine ignition system, high-voltage current is introduced into the cylinder to generate electric sparks to ignite the parts of the combustible gas mixture; the spark plug insulator skirt should maintain a temperature of 500-600 ° C. If the value is too high, carbon deposits will be formed on the skirt of the insulator, which will cause leakage between the electrodes and affect spark plug flashover. If the temperature of the insulator is too high, hot ignition will occur when the mixture gas contacts such a hot insulator, which will lead to premature ignition of the engine. The normal working temperature of the spark plug is between 450 and 870°C, and the tradi...

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Problems solved by technology

[0002] The spark plug is an important component to support the work of the gasoline engine. In the gasoline engine ignition system, high-voltage current is introduced into the cylinder to generate electric sparks to ignite the parts of the combustible gas mixture; the spark plug insulator skirt should maintain a temperature of 500-600 ° C. If the value is too high, carbon deposits will be formed on the skirt of the insulator, which will cause leakage between the electrodes and affect spark plug flashover. If the temperature of the insulator is too high, hot ignition will occur when the mixture gas contacts such a hot insulator, which will lead to premature ignition of the engine. , the normal working temperature of the spark plug is between 450 and 870°C, and the traditional spark plug cannot detect its own temperature at this time. A kind of alarm device for spark plug exceeding the limit temperature and too long can solve the above problems.

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