1. A SEMINAR ON
DTS-I Technology
Submitted to:- Submitted by:-
Mr.Prashant Sharma Aniket Bose
(Asst. Prof. Mechanical engg.) (Mechanical engg. 7th sem)
(Roll no.-0202meo81005)

2. DTSI - digital twin spark ignition technology. We
know that in petrol engine we require spark plugs to
initiate ignition of A/F mixture. In DTSI instead of one
sparkplug we have two plugs. More over when these
sparkplugs should initiate the spark is determined by
microcomputers. In India it was Bajaj who are having
patents for their 150-220CC bikes

3. IN DIGITAL TWIN SPARK IGNITION
SYSTEM TWO SPARK PLUGS
ARE USED, CONTROLLED DIGITALLY
; BY A MICRO PROCESSOR.
THESE SPARK PLUGS IGNITE THE
FUEL MORE EFFICIENTELY AT
THE AND OF COMPRESSION
STROKE .

4.  Twin spark plugs
 Digital C.D.I.
 TRICS III

5. TWO SPARK PLUGS ARE USED INSTEAD OF ONE ENABLES FAST
AND EFFICIENT COMBUSTION LEADING TO BETTER FUEL
EFFICIENCY AND HIGHER POWER AS COMPARED TO
CONVECTIONAL ENGINES.
BECAUSE THE IGNITION RATE IS
DOUBLE; THE POWER IS GENERATED MUCH FASTER AND
AFTER COMBUSTION PRODUCT AND GASES EXPANDS MORE
FASTER WHICH IN TURNS PUSH THE PISTON MORE
POWERFULLY AND WE GET BETTER PICKUP AND BECAUSE
APPROXIMATELY ALL THE FUEL BEING IGNITED AT ONCE WE
GET BETTER FUEL EFFICIENCY AS WELL.

6. To enable sparking of two spark plugs , a digital C.D.I.
capable of handling this was developed.
To enable optimum ignition timing for part throttle loads
and full throttle loads . There are separate ignition
maps stored in the memory of the C.D.I. These are
activated depending on the throttle opening and
engine speed.

7. To enable switching the required ignition maps , a
magntically operated reed switch is incoporated on the
carburettor throttle shaft and carburettor body . This is
known as TRICS-III.
Throttle responsive ignition control system – IIIrd
generation.

8. Performance DTS-I Regular
Power 13.02Ps 12Ps
Torque 11.68 Nm 10.08 Nm
Max. speed 120 100

9.  a) The fuel efficiency got drastically
improved
 b) The power weight ratio
improved

10.  Bajaj Auto holds an Indian patent for the DTSi
technology. The Alfa Romeo Twin-Spark
engines, the BMW F650 Funduro which was
sold in India from 1995 to 1997 also had a twin-
spark plug technology, and the Rotax
motorcycle engines,more recently Honda's iDSI
Vehicle engines use a similar arrangement of
two spark-plugs.

12. 1. Ibibo.ANSWER.COM
2. Slide share.com
3. BAJAJ AUTO manual

13. Thank you