The document discusses laser induced ignition for gasoline direct injection engines. It introduces laser ignition as an alternative to spark plug ignition, noting advantages like flexible plasma location and self-cleaning. The document then covers the basic working principle of laser ignition, comparisons to spark plug ignition, an advanced laser ignition system layout, and applications like a potential use in upcoming Mazda sports cars. It concludes that laser ignition currently has higher costs than spark plugs but offers attractive advantages for future development and practical applications.

1. SEMINAR ON
LASER INDUCED IGNITION OF
GASOLINE DIRECT INJECTION ENGINES
BY
Chinmay Mehta
Under guidance of
Mr. vasu.m

2. CONTAINS
 Introduction
 Working
 Advantages
 Limitations
 Conclusion
 Application

3. INTRODUCTION
 A laser can be used instead of spark plug in
ignition system
 The laser ignition system can be change the
concept of ignition process
 It has may advantages compare to spark plug
 By using laser plasma can located any where in the
combustion chamber
 Laser doesn't need electrode
 And self cleaning
 Location of spark plug is flexible

4. COMPARISON BETWEEN SPARK PLUG AND
LASER IGNITION
 Below symmetric diagram shows the comparison
between spark plug and laser ignition.
 As shown in fig. (a) in spark plug the plasma is
located at the starting of the nozzle.
 And in fig. (b) & (c) the plasma is located anywhere
in the combustion chamber where fig. (c) shows
multiple ignition.

5. ADVANCED LASER IGNITION SYSTEM (ALIS)

6. LASER IGNITION SYSTEM LAY OUT

7. PRINCIPLE OF LASER IGNITION
mixture burning
focused laser beam
plasma
flame kernel

8. WORKING OF ADVANCED LASER IGNITION
SYSTEM (ALIS)
 There is a laser connected to the multiplexer.
 Electronic Control Unit (ECU) controls the fuel flow
rate and power to the Electronic interface.
 Multiplexer is used to divide the original laser beam
into several other small laser beam which are
driven to laser plugs.
 Optical fiber is used to send the divided laser
beams to the laser plugs.

9. ADVANTAGES
 High power output.
 Increase the fuel efficiency.
 It increase combustion process and it is eco
friendly.
 The plasma is located in anywhere in combustion
chamber
 High temperature and pressure does not effect the
performance.
 It does not require maintenance to remover carbon
deposits because it is self cleaning.

10. DISADVANTAGES
 Propagation of laser pulse through optic fiber.
 Require specially designed combustion chamber is
require
 It is costly compare to spark plug ignition system

11. APPLICATION
According to the latest international reports, Mazda’s
upcoming rotary sports car could feature laser ignition
technology. This would replace the spark plug ignition
system which is currently applied to every petrol car
on the market. It’s also a setup which has been
around since 1860.
Mazda RX-9 16X rotary to get laser ignition

12. CONCLUSION
Laser ignition system is very expensive compare to
the spark plug ignition system and now it is ready for
development. But the potential and advantages are
more attractive in many practical application and it
consist many advantages compare to the spark plug
ignition process

13. Thank you……..