linsheng : “This ignition occurs when a group of components work together, also known as the ignition system. The ignition system consists of the ignition coil, the distributor, the distributor cover, the rotor, the plug wire and the spark plug. The older system is in the distribution. The point and condenser system is used in the device, and the newer (and in most cases we will see) use the ECU, the cerebellum in the box to control the spark and slightly change the ignition timing."
linsheng analyzes the mutual operation of several parts of the car ignition system:
A. Ignition coil
An ignition coil is a device that can consume relatively weak battery power and convert it into a spark sufficient to ignite fuel vapor. Inside the conventional ignition coil are two coils, one placed on top of the other. These coils are called windings. One winding is called the primary winding and the other winding is called the secondary winding. The primary winding mixes the juices together to form a spark that sends the spark from the dispenser door.
Unless there is an external plug, you will see three contacts on the ignition coil, in which case the contacts are hidden inside the housing. The large contact in the middle is the position of the coil wire (the wire that connects the coil to the dispenser cover. There is also a 12V + wire connected to the positive power supply. The third contact transmits information to the rest of the car, like a tachometer.
In many cases, you can test the ignition coil on your car.
B. Dispenser, dispenser cap and rotor
Once the coil produces a very powerful spark, it needs to send it somewhere. Pick up the spark somewhere and send it to the spark plug, somewhere is the dealer.
The dealer is basically a very precise rotator. As it rotates, it distributes sparks to each spark plug at the right time. It transmits sparks by absorbing strong sparks from the coil wires and through rotating electrical contacts called rotors. The rotor rotates because it is directly connected to the shaft of the dispenser. When the rotor rotates, it touches many points (4, 6, 8 or 12, depending on the number of cylinders of the engine), and by this point the spark is sent to the plug wire at the other end. Modern dealers have electronic aids that can make changes to the ignition time.
C. Spark plugs and wires
After the coil takes out the weaker juice and produces a high power spark and the dispenser gets a strong spark and rotates it to the correct outlet, we need a way to bring the spark to the spark plug. This is done through the spark plug line. Each contact point on the dispenser cover is connected to a plug wire that plugs a spark onto the spark plug.
The spark plug is screwed into the cylinder head, which means that the end of the plug is at the top of the cylinder and acts. At the right time (due to the dealer), when the intake valve allows an appropriate amount of fuel and air to enter the cylinder, the spark plug produces a beautiful blue hot spark that ignites the mixture and produces combustion.
At this point, the ignition system has completed its work and can be completed thousands of times per minute.
D. Ignition module
In the past, dispensers relied on their own "mechanical intuition" to keep spark time perfect. It is implemented by settings called point and condenser systems. The ignition point is set to a specific gap that produces the best spark when adjusting the condenser.
These days are handled by computers. A computer that directly adjusts the ignition system is called an ignition module or an ignition control module. There are no maintenance or repair procedures for the module except for replacement.