This document discusses digital twin spark ignition (DTS-i) technology. DTS-i uses two spark plugs located at opposite ends of the combustion chamber to ignite fuel more efficiently. This creates two flame fronts and reduces flame travel time, resulting in faster, more complete combustion. Key benefits are improved fuel efficiency, power, and lower emissions. It works by using an electronic control unit to digitally time the two spark plugs. While offering better performance, DTS-i also has some disadvantages like higher replacement costs for both spark plugs. Overall, the technology provides a better balance of power and fuel efficiency compared to conventional engines.

1.  Introduction
 Why it is Called “Digital”…..?
 Principal of Dts-i Technology
 Working of DTS-I system
 Combustion without using DTS-i Technology
 Combustion process with DTS-i Technology
 Advantages of DTS-i Technology over conventional engine
 Disadvantages of DTS-i Technology
 Comparison of various aspects of 125cc Categories bikes
 Comparison of various aspects of 150cc Categories bikes
 Conclusion
CONTENTS

2. Introduction :-
 DTS-i stands for “Digital Twin Spark Ignition”.
 Digital twin spark ignition technology is a brand new Automoble Engine Technology
that gives a brillient combination of power and mileage together .
 In actual practice, complete combustion is not possible due to various losses in the
combustion chamber as well as design of the internal combustion engine.
 This can be done by using two spark plugs which spark alternatively at a certain time
interval so as increase the diameter of the flame & burn the fuel instantaneously.
 By generating two sparks at upper end of the combustion chamber, (approximately 90°
to the valve axis) the air-fuel mixture gets ignited in a way that creates two flame fronts
and, therefore, a reduction in flame travel

3. Why it is Called “Digital”…..?
 Because it has some intelligent device that controls the fuel supply according to
the varying loads.
 This device is known as the “Electronic Control Unit” (ECU).
 The Electronic Control Unit is a microprocessor based system and can be regarded
as the brain of the fuel injection system and spark timing.
 It collects the information given by various sensors and accordingly operate the
spark plug.

4. Principal of Dts-i Technology
 In Digital Twin Spark Ignition System Two
Spark Plugs Are Used, Controlled Digitally
; By A Micro Processor.
 These Spark Plugs Ignite the Fuel more
Efficiently at the end of Compression
Stroke .

5. Working of DTS-I system
Digital Twin Spark ignition engine has two Spark
plugs located at opposite ends of the combustion
chamber and hence fast and efficient combustion is
obtained.
The benefits of this efficient combustion process
can be felt in terms of better fuel efficiency and
lower emissions. The ignition system on the Twin
spark is a digital system with static spark advance
and no moving parts subject to wear. It is mapped
by the integrated digital electronic control box
which also handles fuel injection and valve timing. It
features two plugs per cylinder.

7. Various Function of DTS-i System
 It use to increases the efficiency .
 It use for faster and better combustion.
 It has two spark plug , so it burns the complete rich mixture (air and fuel) in 4stroke
petrol engine.
 It use to increase the power output of engine.

8. Combustion without using DTS-i
Technology
 The spark plug ignites the air-fuel
mixture and flame continuously
spreads.
 There is delay to reach the furthest
part of the combustion chamber.
 There are some non combusted fuel
within the chamber and, overall, the
combustion is slow and inefficient.
 In simple words, the air and fuel
mixture does not burn completely.

9. Combustion process with DTS-i Technology
 The twin spark plugs are fixed to the cylinder
head maintaining an angle about 90° to valve
axis.
 The air-fuel mixture gets ignited in a way that
creates two flame fronts.
 Therefore, a reduction in flame travel of the
order of 40 per cent is achieved.
 Hence, the outcome of this is more torque,
better fuel efficiency and lower emissions.

10. Advantages of DTS-i Technology over
conventional engine
 Less vibrations and noise.
 Long life of the engine parts such as piston rings and valve stem.
 Low specific fuel consumption.
 Increase the Thermal 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 because of increased Compression ratio.

11. Disadvantages of DTS-i Technology
 If one spark plug get damaged then we have to replace both.
 Cost is double the amount on spark plugs when it is time to replace them.
 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.

14. Conclusion
Hence it can be concluded that the application of these technologies in the present
day automobiles will give the present generation what they want i.e. 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.