The composition and principle of spark plugs for auto parts.

Make up the spark plug.
The spark plug is composed of two parts: an insulator and a metal shell: the metal shell is threaded and screwed into the metal shell on which the cylinder depends; the insulator is installed in the shell, and inside it, a center electrode runs through, and the upper end of the center electrode has a connection nut, Connect the high-voltage line from the distribution board; the ground electrode welded to the lower end surface of the casing, there is a gap of 0.6-1.0mm between the middle electrode and the ground electrode. When the high-voltage electricity enters the ground through this gap, sparks will erupt to ignite the mixture gas.

How will the heat plug work?
The high voltage generated by the ignition device is applied between the center electrode and the side electrode of the spark plug to ionize the gas between the two, thereby destroying the insulation state between the electrodes, thereby generating a current, and the discharge generates an electric spark. Spark ignition is to activate the combustion particles through the spark discharge between the electrodes, and generate a thermal effect to form a flame nucleus.

Installing the weather shield above the window is a kind of protruding rain cover made of synthetic resin or engineering plastic material. In fact, it is attached to the top of the window, usually a PC material rain shield.
What is the role of the windshield:
The sun block can effectively prevent rain or strong wind from blowing directly into the car and improve the ventilation efficiency; when driving in the rain, opening the window can prevent the window from fogging.
With this weathershield installed, you drop the glass a few centimeters so that the rain won't run into the car when it rains. At the same time, it can also ventilate the car, which many old drivers like to use.
There's also a cool use for this thing when it's parked in a parking lot. The glass can drop a little. Not only can it ventilate the inside of the car, but pedestrians next to you will not notice that your car glass is not actually closed. Lying in the car for too long doesn't feel sullen.