deepak laser ignition

8/2/2019 Deepak Laser Ignition

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D E E P A K S H A R M A

M E 0 8 0 1 8

LASER INDUCED IGNITION OF

GASOLINE

DIRECT INJECTIOIN ENGINES


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WHAT IS LASER?

NAMELASER IS AN ACRONYM FORLIGHT AMPLIFICATION BY THE STIMULATED EMISSION OF

RADIATION

INTENSE AND UNIDIRECTIONAL BEAM OF LIGHT .

MONOCHROMATIC , COHERENT .

MAIN THREE PARTS

POWER SUPPLY LASING MEDIUM PAIR OF PRECISELY ALIGNED MIRRORS


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TYPES OF LASERS

SOLID STATE LASERS . * Distributed solid matrix* Non-toxic & Long life* Ex. Ruby, YAG

GAS LASERS . * O/p of visible Red light

* Corrosive & toxic* Ex. He, HeNe, CO2

DYE LASERS * Complex Organic dyes* Tunable Over Broad

range of wavelength

SEMICONDUCTOR LASERS * Called diode laser* Ex. HPDD laser


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Potential Future IgnitionSystem

Homogeneous Charge Compression Ignition(HCCI)

Diesel pilot ignition

Laser ignition


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Laser Ignition

An alternative solution to standard spark plug is the use of

pulsed laser, focused to create plasma, representing the laser

ignition.

Laser ignition, or laser-induced ignition, is the process ofstarting combustion by the stimulus of a laser light source.

Spark creation due to the local deposition of energy

Ignition itself based on a positive balance between the

deposited energy and the losses


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mixture burning

focused laser beam

plasma

I>Ithreshold

flame kernelE>Eignition

laser beam

convex lens

Principle of Laser Ignition


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Advantages of Laser Ignition

Arbitrary positioning of the ignition plasma

Absence of quenching effects

Absence of erosion effects

Precise ignition timing

Simpler regulation of the ignition energy

Easy possibility of multipoint ignition


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NOx Emission Potentials

330

240

70

250

190

0

50

100

150

200

250

300

350

spark ignition

laser ignition

NOX [mg/Nm]

diesel pilot ignition

direct pre chamber direct pre chamber


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Laser Arrangement


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Challenges

Propagation of laser pulse through fiber optics

Develope of a compact, robust and economic lasersource

Durability of windows


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Laser Vs. Primer


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Laser Vs. Primer


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DRAW BACKS OF CONVENTIONAL SPARK

PLUG

LOCATION OF SPARK PLUG IS NOT FLEXIBLE

NOT POSSIBLE TO IGNITE INSIDE FUEL SPRAY

FREQUENT MAINTENANCE REQUIREMENT

LEANER MIXTURES CANNOT BE BURNED

FLAME PROPAGATION IS SLOW

EMISSIONS ARE MORE( DUE TO IMPROPER COMBUSTION)

HENCE A NEW BETTER SYSTEM IS REQUIRED


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Upcoming Project

Mazda RX-9 16X


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CONCLUSION

THE APPLICABILITY OF A LASER-INDUCED IGNITION SYSTEM ONDIRECT INJECTED GASOLINE ENGINE HAS BEEN PROVEN.

AT PRESENT, A LASER IGNITION PLUG IS VERY EXPENSIVE

COMPARATIVELY

BUT POTENTIAL ADVANTAGES WILL SURELY BRING IT INTO MARKET


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Thanks for Your

Attention

deepak laser ignition

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