Bajaj Auto Ltd first invented Twin Spark technology in India .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. However very few small capacity engines did eventually implement such a scheme in their production prototypes.
As we know that the in 4 stroke engine the main and effective stroke of an engine is power stroke or expansion stroke which is started via spark plug and it is effective among the other three strokes available.So by improving the power stroke may change the entire scenario of an engine performance. Because if the burning of the air fuel mixer would happen well then more power will be produced in the combustion chamber.
And another main advantage of DTSi Engines is Detonation can be reduced. As we know that the petrol engine major problem is DETONATION. Generally detonation occurs when the flame travel time from center to the side walls increases the self ignition temp. time. But by using 2 spark source on the opposite sides which reduces the flame travel as stated above. So DTSI engine cannot frequently undergo detonation because complete combustion of air-fuel will not create any disturbance between piston and wall.
Working Principle of DTSi Engine :-
There are some advance technology used in DTS-i engine which makes it more powerful than the conventional single spark plug 4-stroke engine like
- 1.CDI technology
- 2.Tricks iii technology.
Advantage:-
- Less vibrations and noise.
- Better fuel efficiency.
- Complete combustion, No un-burnt issue.
- Long life of the engine parts such as piston rings and valve stem.
- Decrease in the specific fuel consumption.
- Less emission of exhaust gases.
- No over heating.Engine breathing performance is easy even at high rpm.
- Gradual increase in the pressure hence power is uniformly distributed throughout the crank angle and hence smooth ride.
Disadvantage:-
- There is high NOx emission
- Complex in design.
- Expensive
- Replacement of both spark plug even one is damage (Reason is series in connection , But parallel connection could not be achieved high voltage).
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