DTSi stands for Digital Twin Spark Ignition.
Digital Twin Spark Ignition has two spark plugs
that use to ignite the charge in the combustion
Twin spark plugs at either ends of the
combustion chamber help in faster and better
combustion. It only use in the petrol engine.
Use of DTS-I in 4-stroke Petrol
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.
DTS-i use in
engine . And
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
of Digital twin
Various functions of DTS-i
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
It use to increase the power output of engine.
Combustion Process In both CI
engine and DTS-si Engine
Combustion Process with DTS-I
The fresh charge that entered the cylinder
during the suction stroke is compressed during
the compression stroke.
Then a spark will be ignited by one of the
Twin spark plugs and the flame front begins to
expand like an inflating balloons.
Advantages of DTS-I
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
Less vibrations and noise.
Long life of the engine parts such as
piston rings and valve stem.
Decrease in the specific fuel
No over heating.
Gradual increase in the pressure.
Disadvantages of DTS-i Technology
There is Nox emission.
If one spark plug get damage then we have to replace
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.
DTS-i is actually a simpler, cheaper and low-tech
alternative to making more power and burning less fuel.
However owners mistakenly think it is high-tech.
DTS-I Technology used by company
It is a BAJAJ Auto Tredmark. In india bajaj has
patented for dtsi technology . At present
135,150,180,200,220 are using the dtsi (digital
twin spark ignition system). which means the
petrol enters into the cylinder burns more
Advancement of DTS-I
Engine can be further turned to deliver
exhilarating performnce or exceptional
mileage. The further advances of DTS-I
technology are :
Digital Twin Spark- Swirl Induction (DTS-Si)
Digital Twin Spark- Fuel Injection (DTS-Fi)
Digital Twin Spark Ignition- Swirl
The Swirl Induction Concept, which is meant
for producing high turbulence in the
Swirl Induction is nothing but imparting a swirl
motion to the fresh charge that enters the
Digital Twin Spark Ignition-Fuel
DTS-Fi is another advancement of parent
This technology is a combination of both DTS-I
and fuel injection.
This technology is meant for increasing the
fuel efficiency in power bikes.
Hence it can be concluded that the application of
these technologies in the present day
will give present generation what they want i.e
power bikes with fuel efficiency.