Where is the Honda crv ignition coil relay?

In the controller or control box. The relay is connected in series in the main circuit. You can look for them along the circuit. Relays generally have several main contacts, plus two coil contacts, which are similar to contactors, but relays can generally see the contacts. You can also find them according to this feature.

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What is the working principle of ignition coil?

Working principle of ignition coil: The working mode of ignition coil is different from that of ordinary transformer. The common transformer works continuously, and the ignition coil works intermittently. It repeatedly stores and releases energy at different frequencies according to different engine speeds.

When the primary coil is connected to the power supply, with the increase of current, a strong magnetic field is generated around it, and the iron core stores magnetic field energy; When the switching device disconnects the circuit of the primary coil, the magnetic field of the primary coil decays rapidly, and the secondary coil will induce high voltage. The faster the magnetic field of the primary coil disappears, the greater the current at the moment of current disconnection, the greater the turn ratio of the two coils, and the higher the voltage induced by the secondary coil.

With the development of automobile gasoline engine in the direction of high speed, high compression ratio, high power, low fuel consumption and low emission, the traditional ignition device can no longer meet the use requirements. The core components of the ignition device are the ignition coil and the switch device. Increasing the energy of the ignition coil can generate enough energy sparks, which is the basic condition for the ignition device to adapt to the operation of modern engines.