DTS-I and DTSS-I are technologies that use twin spark plugs located on either side of the combustion chamber of an engine. This allows for greater combustion rates and more efficient burning of fuel compared to a traditional single spark plug engine. The twin spark plugs are controlled by a microprocessor that can optimize ignition timing for better performance. These dual spark technologies provide benefits like reduced emissions and fuel consumption while increasing an engine's power and lifespan.

1. DTS-I AND DTSS-I TECHNOLOGY
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2. INTRODUCTION:
 A conventional 4 Stroke engine has a Single Spark Plug located
at one end of the combustion chamber.
 Hence there was a requirement to change engine’s design, and
there is a need to achieve following objectives-
 A high degree of drivability.
 First rate standards of reliability.
 Long service life
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3.  To overcome those limitations, a new patent was
introduced that is known as DTS-i & DTS-Si technology
which uses twin spark around the either sides of
combustion chamber.
 Twin spark technology was used first time in Alfa Romeo
Grand Prix car in 1914.
 Twin spark usually refers to
the dual ignition engines
installed in vehicles.
 Only in Petrol engines.
 The TS series are all 4-cylinder inline’ with
twin cam shafts.
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4. What is DTS-I Technology?
Digital Twin Spark-ignition technology powered
engine has spark plugs at either sides of the
combustion chamber.
Greater combustion rate because of twin spark plugs
located around it.
It enables the engines to
combust its fuel at a double
rate than normal.
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5. Engine Construction:
Four in line cylinder.
Engine weight has been considerably reduced by
using 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
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6. Engine Elements:
Construction of DTS-i & DTS-Si engine is same as
that of the conventional 4-Stroke engine. It consists
of following parts-
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7.  Piston
 Cylinder
 Crankshaft
 Connecting rod
 Fly wheel
 Carburetor
 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.
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8. Working:
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.
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9. Controlled by the same microprocessor which
governs the twin spark ignition and variable valve
timing Systems.
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 (Throttle Responsive Ignition
Control System 3rd generation) technology .
2. Intelligent Digital C.D.I (Capacitor Discharge
Ignition) technology.
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10. Trics III Technology:
 Throttle Responsive Ignition Control System – III generation is
an intelligent system which can quickly adapt ignition timing to
suit different riding characteristics.
 TRICS III helps in achieving a good balance between low-to-
mid range torque and top-end power.
 This helps to ride easily in different conditions like flyovers,
hilly areas, dense traffic and highway cruising.
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11. Intelligent Digital C.D.I:
 The Intelligent (C.D.I)
contains a microprocessor,
which continuously senses
different speeds and load on
engine and responds by
altering ignition timing.
 8 bit microprocessor chip
 Working with the TRICS III,
the microprocessor’s memory
provides optimum ignition.
 Improves fuel-efficiency and reduces engine noise and
vibration through smoother power delivery.
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12. Comparing Single and Dual plugs:
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13. DTS-Si (Swirl Induction) Ignition?
 Rotating flow (swirl and tumble).
 Turbulence effect (Reduces burning period).
 Increased Thermal Efficiency.
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14. What is DTS-Si Technology?
 DTS-Si stands for “Digital Twin Spark Swirl Induction”.
 Has 2 spark plugs
 Offset positioning of ports
generate high swirl and
turbulence in combustion
chamber.
 This results in highly efficient combustion that further results
in exceptional mileage.
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15. Much research work has been devoted to swirl
(rotational motion around an axis parallel to the axis
of the cylinder), but in recent years increasing
attention has been paid to tumble (rotational motion
around an axis perpendicular to the cylinder axis).
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16. How DTS-I & DTS-Si system is better
than other technology?
 The disadvantage of the single spark engine is that the
flame front takes some time to reach the farthest portion of
the combustion chamber.
(Leads to slower burning of the Air-fuel mixture)
 But engines which utilize Dual Spark ignition will be
faster and better combustion.
 This superior combustion offers both superior power and
superior fuel efficiency besides of course reducing
emissions.
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17. Advantages:
Less vibrations and noise.
Long life of the engine parts such as piston rings and
valve stem.
Decrease in the specific fuel consumption.
No overheating.
Uniform distribution of power.
Increased Compression ratio.
Better starting of engine even in cold climatic
conditions.
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18. Disadvantages:
The main disadvantage is the maintenance of the
two spark plugs.
If one spark plug get damaged then we have to
replace both of them.
Cost increases due to additional technology.
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19. Applications:
 The engine requires more power and fuel-efficient.
 The increase in the expected life of the vehicles when
compared to conventional technologies.
 The bikes powered by the above technologies are very
well resistant to breakdowns and temperature
fluctuations.
 More combustion rate (instantaneous burning of fuel) is
required.
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20. Conclusion:
From this , I have concluded that perfect
Combustion in an I.C.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.
Since these technologies also minimize the specific
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.
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