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Ignition system basics
linsheng : "There is no normal operating ignition system, no Ford engine project is completed. The important function of this system is to transfer the spark to the required cylinder at the right time. Any deviation from the required microsecond accuracy and the engine will not be normal. Running. If you can't accurately dial the ignition, then all the high-performance hardware in the world won't add anything to your engine performance. Our favorite classic Ford is delivered as a raw equipment with the crushing point dealer. After thousands After a mile of wear, when the point wears and the stop or point gap changes, you will begin to notice subtle changes in how the engine behaves. Although many of us now solve these problems by installing more modern systems, they operate correctly. The requirements for the engine are the same, so it is important to understand the basic principles of the function of the ignition system of the car."
Whether you have a Pertronix ignition or not, you still have the primary and secondary sides of the ignition system and you still have to have the right engine timing. A circuit breaker-free ignition device like Pertronix eliminates the mechanical wear variable on the point set, but the ignition coil voltage must still be delivered in the same manner. Since the computer controls the ignition system and its function is not mechanically sized, the new car is no longer subject to these types of concerns. However, on our 289-powered '67 Fairlane, the splitter and its functions are still relevant to our world. Let's take a look at some of the basic concepts associated with your vehicle ignition system.
Primary and secondary ignition
Your classic Ford ignition system is divided into a primary ignition system and a secondary ignition system. The junction between the two systems is the ignition coil. The main system delivers 12 volts of DC current from the battery directly through the ignition switch to the positive side of the ignition coil. This charge enters the coil directly during startup and passes through the resistor (lower voltage) during operation. Resistors extend the life of the point set.
The ignition coil has primary and secondary wiring in the form of a winding circuit. The primary winding of the coil consists of 100 turns of insulated heavy copper wire. The primary circuit line enters the coil through the positive terminal and wraps around the primary winding and then exits through the negative terminal.
The coil secondary winding circuit contains approximately 20, 000 thin copper coils. The secondary winding is located in the loop of the primary winding. When a 12 volt current flows through the primary side of the coil, it passes through the outer winding and flows out to the breaker point. When the point is closed, the circuit is completed. In this case, a strong magnetic field is generated inside the coil, and the external winding becomes a powerful electromagnet. When the point is turned on, the circuit is interrupted and the magnetic field inside the coil collapses. When this happens, the internal or secondary windings in the coil react by generating a strong charge in the 20, 000 volt range. This shift represents the relationship between primary and secondary systems.
Once a 20, 000 volt spark is generated, it is managed by a secondary ignition system. A large charge flows from the top of the coil and through the coil wire to the center terminal of the dispenser cover. The current then reaches the rotor, which will deliver the charge to the correct spark plug at the right time.
Once the required spark is generated, several variables must be managed to ensure that the spark is delivered to the spark plug at the correct time. The two most important factors are engine timing and breaker point stops. Both involve dealers.
At the beginning: point and condenser based ignition
Close the dispenser cover and you will see the point and condenser. A capacitor is a capacitor that can store a small amount of current. When these points start to open, the current flowing through them will look for another ground path. When they start to open, it tries to skip the gaps in the points, which will eventually hurt them. To prevent this from happening, the condenser provides another grounding path. It is not the real foundation, but it works in a very short time. When the capacitor is saturated with this residual power, these points are far enough that a small amount of residual voltage cannot be skipped.
Ignition upgrade: electronic ignition
There are many modern alternatives that eliminate the troublesome variables inherent in mechanical systems. As mentioned earlier, Pertronix Ignitor is just one of several products that comple
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