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Laser Ignition of Single Cylinder Engine and Effects of Ignition Location
Technical Paper
2013-01-1631
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Laser is emerging as a strong contender as an alternative ignition source for internal combustion (IC) engines. Short laser pulses of few nanoseconds duration delivered by a Q-switched laser are focused by a lens inside the engine cylinder containing combustible fuel-air mixture. If the peak intensity at the focal point exceeds threshold intensity level, breakdown of combustible gases occurs, which leads to plasma formation. If the energy of the spark generated by plasma is high enough, the mixture ignites. In this investigation, laser ignition (LI) was performed in a single cylinder engine at constant speed and wide open throttle conditions using CNG as fuel. Combustion behavior was recorded using a high speed data acquisition system. For laser ignition of the engine, a laser spark plug was designed and manufactured. Laser spark plug consists of combination of lenses and optical windows. The position of plasma was varied inside the combustion chamber and performance, emissions and combustion characteristics were evaluated at different conditions. A comparative study of combustion with laser ignition and conventional spark plug ignition is also reported.
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Citation
Srivastava, D. and Agarwal, A., "Laser Ignition of Single Cylinder Engine and Effects of Ignition Location," SAE Technical Paper 2013-01-1631, 2013, https://doi.org/10.4271/2013-01-1631.Also In
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