a presentation on dtsi technology for college technical seminar

1. Submitted By:
Rakshith P
Branch-Mechanical
Reg.no-1JT15ME041
Guides:
Prof.MR PRAVEEN KANTI
Mechanical department
Jyothy institute of technology
Co Guide
Prof. MR RAKESH P
Mechanical department
Jyothy institute of technology

2. Contents
 Introduction
 Engine Construction
 DTS-I Engine Element
 Working of DTS-I system
 Revolution in DTS-I Technology
 Main Characteristics
 Advantages
 Disadvantages
 Case study
 Conclusion

3. Introduction
 Digital Twin Spark Ignition has two spark plugs that
use to ignite the charge in the combustion chamber.
 2 spark plugs at either ends of the
combustion chamber help in faster and better
combustion.
 It only use in the petrol engine.

4. Why do we use the DTS-i in 4-
stroke Petrol Engine
In 4-stroke petrol engine at ignition time the air
and fuel mixture does not burn completely. But
when DTS-i system use in engine the rich
mixture completely burn and the ignition time
decrease. And power of engine increases

5. DTS-i use in
4-stroke
petrol engine
. And each
cylinder
having two
spark plugs.

6. Engine Construction
 The engine used on the Alfa 164 T. Spark is a four-
in-line cylinder unit whose weight has been
considerably reduced with all aluminum-alloy
engine block, cylinder head, oil sump and tappet
covers.
 Eight counterweights ensure optimal balancing of
the high strength nitride steel crankshaft.
 The pressed-in cast iron cylinder liners feature wet
mounting for more effective heat dissipation

7. DTS-I Engine Element
 The construction of DTS-i engine is
same as that of the conventional 4-Stroke
engine. It consists of following parts:
 Piston
 Cylinder
 Crankshaft
 Connecting rod

8.  Fly wheel
 Carburettor
 2-sparkplug
 2-valves
Here the only change made is that the 2
sparkplug placed at the two opposite end of the
combustion chamber At 90 degree to each other.

9. Working of DTS-I system
 When the rich mixture of air and fuel enter
in the combustion chamber , the two spark
plugs
fixed at opposite end of engine cylinder
generated spark and this spark burn the
mixture that burned mixture gives power to
the 4-stroke engine. Here spark generated by
the microchip .

10. There are some advance technology used in DTS-i
engine which makes it more powerful than the
conventional single sparkplug 4-stroke engine like
1. Trics III technology (Throttle Responsive
Ignition control System 3rd generation)
2. CDI technology

11. TRICS III
Throttle Responsive Ignition Control System 3rd
generation. It is a means of controlling the Ignition by
operating the Throttle.
Based on a particular amount of Throttle opening, the
Magnetic field generated by the Magnet ,Which opens or
closes the switch .
The switch is connected to the Digital CDI, which signals
the CDI to change the desired Ignition Advance .

12. Digital CDI
 A Digital CDI with an 8 bit
microprocessor chip handles
the spark delivery. The
programmed chip’s memory
contains an optimum Ignition
timing for any given engine
rpm, there by obtaining the
best performance
characteristics from the
combustion chamber

13. Combustion Process In SI
engine

14. Revolution in DTS-I Technology
 Recently “DTS-I Triple” spark
technology that Bajaj employs on
the new “Pulsar 200NS”.
The “Pulsar 200NS” an engine
that has the world’s only 3 spark
plugs for its single cylinder.
 The 3 spark plugs make for
efficient burning of the “air + fuel ”
mixture which benefits and
enhances.

15. Main Characteristics
 Digital electronic ignition with two plugs per cylinder
and two ignition distributors;
 Twin overhead cams with camshaft timing variation;
 Injection fuel feed with integrated electronic twin spark
ignition;
 A high specific power;
 Compact design and Superior balance;

16. What are the benefits of DTS-I
system
 Ignition time decreases.
 The rich mixture (air and fuel) completely
burns in combustion chamber.
 Power produced by DTS-I more compare to
single spark ignition system.
 Increase the pick up of engine

17. Disadvantages of DTS-i system
 The engine tends to overheat and loose power at
higher speeds as compared to a single plug
engine.
 There may be a kind of knocking sound on the
machine.
 If one spark plug get damaged then we have to
replace both .

18. Characteristics Hero Honda CBZ
(single spark plug)
Pulsar 180 cc (digital
twin spark plug)
1. Power
2. Torque
3. Speed
4. Mileage
5. Fuel Control
System
12.08PS at 8000rpm
12.03Nm at 6500rpm
100 kmph
50-55 kmpl
Transient power fuel
control
16PS at 8000rpm
14.72Nmat6500rpm
118 kmph
50-55 kmpl
Electronic Control Unit
DIFFERENCE BETWEEN SINGLE SPARK PLUG AND DTS-I technology:
CHARACTERISTICS SINGLE SPARK PLUG TWIN SPARK PLUG:
CASE STUDY

19. Bike in which we use the dts-i
engine?
 In india bajaj has patented for dtsi
technology . At present
platina,xcd125,135,discover150,pulsar
135,150,180,200,200NS,220 are using the
dtsi (digital twin spark ignition system).
which means the petrol enters into the
cylinder burns more efficiently.

20. Conclusion
 I have concluded that perfect Combustion in Internal
Combustion engine is not possible. So for the instantaneous
burning of fuels in I.C. engine twin spark system can be used
which producing twin sparks at regular interval can help to
complete the combustion.
Due to this technology following implementation in engine
were happened:
 Less pollution is created.
 Due to complete combustion average of bike get raise.
 Noise & vibrations are minimized.
 Increase in life of engine & engine parts.
 Higher pickup is achieved.

21. References
 Official Journal L 044, 16/02/2000. Directive
1999/96/EC of the European Parliament and of
the Council.
 Baker P. and Watson H. Mpi air/fuel mixing
gaseous and liquid plg. SAE Technical Papers,
01(246), 2005.
 Wikipedia.org
 Bajaj Auto.com
 google.com

22. -:THANKS:-

23. ??Questions Time??