DTS Technology

1. VISVESVARAYA TECHNOLOGICAL UNIVERSITY,BELAGAVI
UNIVERSITY B D T COLLEGE OF ENGINEERING DAVANAGERE
DEPARTMENT OF MECHANICAL ENGINEERING
__________________________________________________________________________
TECHNICAL SEMINAR
“DTS-I TECHNOLOGY”
PAVAN N H 4UB21ME422
UNDER THE GUIDANCE OF
DR. R P SWAMY
ASSOCIATE PROFESSOR

2. WHAT TO SEE?
 I C Engine Basic
 Spark Plug
 DTS-I Technology

3. I C ENGINES
I C Engines ,i.e., Internal Combustion Engines.
• Main Types:-
1. S I Engines (Spark Ignition)
2. C I Engines (Compression Ignition)
• Sub Types:-
1. 4 stroke
2. 2 stroke

4. 4 STROKE S I ENGINES

5. COMBUSTION PROCESS IN S I ENGINE
 Spark Occurs
 Flame front moves forward
 Combustion of entire mixture, layer by layer occurs
 Combustion gets completed

6. FACTORS AFFECTING COMBUSTION
1. Velocity of the fresh charge
2. Mixture strength
3. Ignition timing
4. Position of spark plug
5. Pressure of hot spots in combustion chamber
Proper combustion requires improvement in these aspects…

7. NECESSITY OF D S T
For Single Spark plug problems are
• More ignition timing
• Slow Combustion rate
• Comparatively low effective pressure
• High knocking Characteristics
To improve these facts we use the Digital Spark Technology…

8. DTS-I TECHNOLOGY
DIGITAL TWIN SPARK IGNITION
DIGITAL :- Spark generation by a micro chip
TWIN :- Two spark plugs
SPARK IGNITION :- Ignition via a spark
• Introduced in pulsar 150 model in Year 2003
• Patent Bajaj Motorcycles,INDIA

9. CONSTRUCTIONAL DETAILS
The constructional of DTS-I Engine is same as that of the
conventional 4 stroke Engine. It consists of following parts:-
1. Piston
2. Cylinder
3. Crankshaft
4. Connecting rod
5. Fly wheel
6. Carburettor
Only change made is that the use of 2 Spark plugs and
4 valves

11. COMBUSTION PROCESS OF DTS-I
 Fresh charge is compressed during the compression stroke
 A spark will be ignited by one spark plug
 Another spark will be ignited by another spark plug as per control of the
microprocessor or Digital electronic control box (DEC)
 Areas that are not covered by the first flame front will be covered by second flame
front
 After power stroke, exhaust is done
 Resulting in the complete & rapid combustion of the fuel

12. ANIMATION OF DTS-I TECHNOLOGY

13. ADVANTAGES
 Decrease in ignition timing
 Comparatively more power is produced
 Less vibrations and noise
 Long life of the engine parts such as piston rings and valve stem.
 Decrease in the fuel consumption
 No over heating
 Increase the Efficiency of the Engine & even bear high loads on it
 Better starting of engine even in winter season & cold climatic conditions
or at very low temperatures
 Better work output
 Less emissions

14. DISADVANTAGES
 If one spark plug get damaged then we have to replace both
 The cost is relatively more
 The engine tends to overheat and loose power at higher speeds as compared
to a single plug engine
 In case the Engine is kept unused for a long time, soiling of spark plugs occur
 It does not deliver any better mileage and acceleration than that derived from
a single spark plug.

15. STATISTICS SHOWING ADV.OF DTS-I

16. BIKES USING DTS-I
• Some of Bajaj bikes
• Discover 150,Pulsar 135,150,180,200,220

17. CONCLUSION
Application of these technologies in the present day automobiles will give
us power bikes with fuel efficiency. Since these technologies also minimize the
fuel consumption and harmful emission levels, they can also be considered as
one of the solutions for increasing fuel costs and increasing effect of global
warming. We can hope for still better technologies, which can achieve still
better results because "there is no end for innovation"