WHERE IS CDY VOLTAGE FROM?

We often come across terminologies in wiring diagrams that might leave us scratching our heads. One such term is "CDY voltage." It is important to understand the source of CDY voltage as it plays a crucial role in the ignition system, especially in older vehicles.

What is CDY Voltage?

CDY stands for Capacitor Discharge Ignition. It is a type of ignition system that uses a capacitor to store energy and then release it rapidly to create a high-voltage spark. This spark is used to ignite the air-fuel mixture in the engine's cylinders. CDY ignition systems are commonly found in older vehicles, but they have been largely replaced by more modern electronic ignition systems.

Where Does CDY Voltage Come From?

The CDY voltage is generated by a special ignition coil called the CDY coil. The CDY coil is connected to the vehicle's battery and to the distributor. When the ignition switch is turned on, power flows from the battery to the CDY coil. The CDY coil then uses this power to charge a capacitor. When the distributor sends a signal to the CDY coil, the capacitor is discharged, and the high-voltage spark is created.

How Does CDY Voltage Work?

The CDY voltage is used to create a spark that ignites the air-fuel mixture in the engine's cylinders. This spark is created when the capacitor in the CDY coil is discharged. The high-voltage spark travels from the CDY coil to the distributor cap and then to the spark plugs. The spark plugs then ignite the air-fuel mixture, which causes the engine to run.

Advantages of CDY Ignition Systems

CDY ignition systems offer several advantages over traditional ignition systems. These advantages include:

• Increased spark energy: CDY ignition systems produce a hotter and more powerful spark than traditional ignition systems. This can lead to improved engine performance and fuel economy.
• Reduced emissions: CDY ignition systems can help to reduce emissions by burning the air-fuel mixture more efficiently.
• Improved reliability: CDY ignition systems are generally more reliable than traditional ignition systems. They are less likely to fail, which can lead to fewer breakdowns and repairs.

Conclusion

CDY voltage is generated by a special ignition coil called the CDY coil. The CDY coil uses power from the vehicle's battery to charge a capacitor. When the distributor sends a signal to the CDY coil, the capacitor is discharged, and a high-voltage spark is created. This spark is used to ignite the air-fuel mixture in the engine's cylinders. CDY ignition systems offer several advantages over traditional ignition systems, including increased spark energy, reduced emissions, and improved reliability.

Frequently Asked Questions

1. What is the difference between CDY ignition and electronic ignition?
   CDY ignition systems use a capacitor to store energy and create a spark, while electronic ignition systems use a computer to control the spark timing. Electronic ignition systems are more modern and offer several advantages over CDY ignition systems, including improved performance, fuel economy, and emissions.
2. Why is CDY voltage important?
   CDY voltage is important because it is used to create the spark that ignites the air-fuel mixture in the engine's cylinders. Without CDY voltage, the engine would not be able to run.
3. What are the symptoms of a bad CDY coil?
   Symptoms of a bad CDY coil can include engine misfires, hard starting, and a lack of power.
4. How do I test a CDY coil?
   You can test a CDY coil using a multimeter. Check the resistance of the coil's primary and secondary windings. If the resistance is out of specification, the coil is bad.
5. How do I replace a CDY coil?
   Replacing a CDY coil is a relatively simple task. You will need to disconnect the battery, remove the distributor cap, and disconnect the wires from the CDY coil. Then, you can remove the old CDY coil and install the new one.