Laser spark plug ignition systems are coming soon as alternatives to replace conventional automobile spark plugs. Laser ignition systems work on Laser beam Fiber-Optic principles. High energy lasers can ignite the lean air-fuel mixtures at low power consumption from battery. Laser spark plug ignition systems helps design cleaner, faster ignition, and more fuel efficient vehicles. Laser spark plug ignition systems offer very long life compared to conventional spark plugs.

Researchers developing multibeam laser spark plug system small enough to screw into an engine’s cylinder head. The new laser ignition system is made from ceramics, and could be produced inexpensively in large volumes. Scientists at Liverpool University and engineers at car giants Ford have developed a new ignition system which uses focused beams of laser light to ignite the fuel. The researchers claim the technology is more reliable and efficient than current spark plug technology and will enable cars to start more easily in cold and damp conditions.

Operating Principle of Laser Spark Plug Ignition System

Laser Spark Plug Ignition SystemLaser spark plug ignition system has a laser transmitter with a fiber-optic cable powered by the car’s battery, shoots the laser beam to a focusing lens that would consume a much smaller space than current spark plugs. The lenses focus the beams into an intense pinprick of light, and when the fuel is injected into the engine, the laser is fired and produces enough heat to ignite the fuel.

Spark Plug Vs Laser Ignition System

  • Spark plugs can ignite leaner fuel mixtures, but only by increasing spark energy. Unfortunately, these high voltages erode spark plug electrodes so fast, the solution is not economical. By contrast, lasers, which ignite the air-fuel mixture with concentrated optical energy, have no electrodes and are not affected.
  • Lasers also improve efficiency. Conventional spark plugs sit on top of the cylinder and only ignite the air-fuel mixture close to them.
  • Lasers promise less pollution and greater fuel efficiency, but making small, powerful lasers has, until now, proven hard. To ignite combustion, a laser must focus light to approximately 100 gigawatts per square centimeter with short pulses of more than 10 millijoules each.
  • Laser spark plug ignition system will require less power than traditional spark plugs.
  • Lasers can be focused and split into multiple beams to give multiple ignition points, which means it can give a far better chance of ignition.
  • The laser also produces more stable combustion so you need to put less fuel into the cylinder.
  • The laser-ignition system, although highly promising, is not yet being installed into actual automobiles made in a factory.