What is the function of spark plugs in sedans?
2 Answers
Function of spark plugs: The ground electrode of the spark plug is connected to the metal shell, which is threaded into the engine block via the cylinder head. The insulator primarily serves to isolate the metal shell from the central electrode. The terminal nut is the part of the spark plug that contacts the high-voltage coil. When current passes through the terminal nut and the central electrode, it ionizes the medium between the central electrode and the ground electrode to produce a spark, thereby igniting the air-fuel mixture in the cylinder. Composition of spark plugs: Spark plugs mainly consist of a terminal nut, insulator, terminal stud, center electrode, side electrode, and shell. Types of spark plugs: Main types of spark plugs include: standard spark plugs, projected insulator spark plugs, electrode spark plugs, seat spark plugs, pole spark plugs, and surface gap spark plugs.
The spark plug plays the role of the ignition master in a car engine. When the engine is running, the mixture of fuel and air needs to be ignited to push the pistons and generate power. The spark plug is the key component responsible for producing that small electric spark. It is connected to the ignition system, and when high-voltage current passes through, it creates a spark inside the cylinder, initiating the combustion process. A good spark plug ensures smoother engine operation and better fuel efficiency. If it wears out, the car may experience shaking, difficulty starting, or even increased emissions. Regular inspection of spark plugs is crucial, and I recommend replacing them every 30,000 to 50,000 kilometers, opting for more durable types like platinum or iridium. Remember, the spark plug is the unsung hero behind engine performance.
