Q:

How does a CDI ignition work?

A:

Quick Answer

A capacitor discharge ignition or CDI works by passing an electrical current over a circuit capacitor. This type of ignition builds up charge quickly. It is ideal for smaller vehicles and motors.

Continue Reading
How does a CDI ignition work?
Credit: Karan Kapoor Cultura Getty Images

Full Answer

A CDI ignition starts by generating a charge and storing it up before sending it out to the next component in the system. Once the electrical level reaches a proper value, the current signals and charges a spark plug that lets off its excess electricity in pulses that power the engine. This power passes through a capacitor and is transferred to an ignition coil that helps boost the power by acting as a transformer and letting the energy pass through it instead of catching any of it. CDI ignition systems therefore allow the engine to keep running as long as there is a charge in the power source.

CDI ignition systems have fast charging times and power themselves more efficiently than inductive ignition systems. These types of power sources are ideal for smaller machines such as motorcycles, chainsaws and outboard motors.

Despite its usability, there is a limit to the amount of charge a capacitor holds before it burns out, so it is not a usable resource in larger machines and vehicles. The faster a CDI system spins, the less power it exudes, and therefore it cannot successfully power a car or truck.

Learn more about Car Parts & Maintenance

Related Questions

  • Q:

    How do you test a CDI box?

    A:

    A CDI box can be tested using a device called an ohm meter, which measures electrical resistance. The ohm meter can be attached to either input or export wires, ensuring that the CDI box is both receiving power and transmitting it.

    Full Answer >
  • Q:

    How does a light bulb circuit work?

    A:

    A light bulb circuit works when the electric current flowing through the light bulb combines with the current flowing in the battery or power source. The filament and wires in the light bulb conduct electricity so that electric current can move through an electric circuit.

    Full Answer >
    Filed Under:
  • Q:

    How does an ignition switch work?

    A:

    An ignition switch works by turning the car's ignition system on and off. It is operated by an ignition key that flips it on and off. This switch is located on the car's steering column or dashboard.

    Full Answer >
  • Q:

    How can you tell if a parallel LC circuit is in resonance?

    A:

    A parallel LC circuit is in resonance when a current detected through the parallel circuit falls in phase with the supply voltage, according to Electronic-Tutorials. At the point of resonance, a large circulating current can be detected between the inductor and the capacitor because of energy stemming from the oscillations. A parallel resonant circuit holds energy in the inductor’s magnetic field and the capacitor’s electric field.

    Full Answer >
    Filed Under:

Explore