A Review: Laser Ignition system in IC Engine
Author(s):
Sandeep Lutade, Bhojraj N Kale, Vijay R Khawale
Keywords:
Fuel, IC Engine, Spark Ignition, Laser Ignition
Abstract
An ignition system generates a spark or heats an electrode to a high temperature to ignite a fuel-air mixture in spark ignition internal combustion engines oil-fired and gas-fired boilers, rocket engines, etc. The widest application for spark ignition internal combustion engines is in petrol (gasoline) road vehicles: cars, motorcycles, pickups, vans, trucks, and buses. Compression ignition Diesel engines ignite the fuel-air mixture by the heat of compression and do not need a spark. They usually have glow plugs that preheat the combustion chamber to allow starting in cold weather. Other engines may use a flame, or a heated tube, for ignition. While this was common for very early engines it is now rare. Laser ignition is an alternative method for igniting mixtures of fuel and oxidiser. The phase of the mixture can be gaseous or liquid. The method is based on laser ignition devices that produce short but powerful flashes regardless of the pressure in the combustion chamber. Usually, high voltage spark plugs are good enough for automotive use, as the typical compression ratio of an otto cycle internal combustion engine is around 10:1 and in some rare cases reach 14:1. However, fuels such as natural gas or methanol can withstand high compression without self ignition. This allows higher compression ratios, because it is economically reasonable, as the fuel efficiency of such engines is high. In this paper the study has been done on laser ignition system and it has been seen that use of laser system reduces the emissions, more stable combustion and lower idle speeds, when compared to conventional spark ignition. Specific fuel consumption decreases in the laser ignition system as laser ignition system can operate on lean mixtures.
Article Details
Unique Paper ID: 145929

Publication Volume & Issue: Volume 4, Issue 11

Page(s): 1297 - 1299
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