What is the role of spark plugs?Spark plugs are the main original in the car engine ignition system. The role of a spark plug is to introduce the high -voltage electricity generated by the ignition coil into the engine cylinder, and the spark ignite the mixture between the gap between the spark plug.How often does the spark plug change?What are the spark plug models?What is the principle of spark plugs?Below is the spark plug knowledge encyclopedia. You want to know the spark plug knowledge here.
Brief Introduction to Spark
Spark plug (SparkPlug), commonly known as Huotui, its role is to discharge the pulses sent by high voltage wires (fire mouth lines), break through the two electrodes of spark plugs, and generate electric sparks to cause mixed gas in the cylinderEssenceAutomobile spark plugs are increasingly segmented by automotive supplies. The automotive supplies and service markets are becoming more and more segmented. Automotive Huixi Automobile Products Network focuses on the car supplies service market.Basic conditions of high -performance engines: high -energy stable sparks, mixed mixed gas, high compression ratio.
The spark gasoline engine generates through the discharge phenomenon between the electrodes is to cause the power through the timely combustion of the fuel and mixed gases, but the gasoline as a fuel is difficult to spontaneously ignite even under the high temperature environment. It is necessary to use it in time to combust. ""Fire" ignite.The spark ignition here is the role of "spark plug".The overall performance of the engine depends entirely on whether the spark of spark plugs flashes the spark.We often use engines as "cars hearts", but they can use sparks as "the heart of the engine."
The role of spark plug
Although the spark plug is just a small part, it is extremely important, and it cant move without it.
Because the burning point of gasoline is high (about 400 degrees), the mixture is needed to ignite the mixture.
Give sparks in the burning room, and ignite the mixture to generate power
The discharge phenomenon between the electrodes is spark. The gasoline engine is driving the power through the timely combustion of the fuel and mixed gas."Fire" to ignite.The spark ignition here is the role of "spark plug".
Seal the spark plug hole to maintain the pressure in the cylinder
Usually, the high -voltage electricity of the spark plugs is about 20,000 to 30,000 volts from the ignition coil through the electrical drive. In addition, the electrode of the spark plug must be often in a high -temperature combustion room with about 45 times atmospheric pressure.Maintain extremely high gas tightness.Therefore, in such a harsh environment, the quality of spark plugs will directly affect the performance of the engine, so we must not pay attention.
The ignition principle of spark plug
1. The working principle of spark plugs:
The grounding electrode on the spark plug is connected to the metal shell, connected to the engine cylinder through the cylinder head threaded connection.The insulator mainly plays the role of isolation metal housing and central electrodes.The wiring nut is the part of the high -voltage coil on the spark plug. After the current passes through the wiring nut and the central electrode, the medium between the central electrode and the ground electrode will produce sparks, thereby igniting the mixture in the cylinder.
2. Specific process of ignition of spark plugs:
1. Spark
The high voltage generated by the ignition device is applied between the central electrode of the spark plug and the grounding electrode. The insulation state between the electrode is destroyed and generates the current, and the electric spark is generated.Spark energy determines whether the compressor can make the hybrid gas ignition.The phenomenon of discharge is completed in a short time (about one thousandths of seconds) and is extremely complicated.
The role of the spark plug is that the electrode must be produced between the electrodes within the specified time, becoming the starting point of the mixed gas burning.
2. fire
The ignition caused by the electrical spark is to activate the combustion particles through the sparks between the electrodes, produce a chemical reaction (acidity), and the thermal effect occurs, and the flame nucleus is finally formed.The heat can make the surrounding hybrid activity, and finally form a flame nucleus that expands to the surrounding area centered on its own combustion.

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