What Is DTS-Si Technology And How Does It Work In Motorbikes?

As common biker or as laymen we keep hearing that so and so bike features what is called DTS-Si technology, but we hardly understand what it means except being familiar with the term maybe through the commercials/advertisements.

Well, the DTS-Si or the Digital Twin Spark-Swirl Induction is a technology where dual spark plugs are used and that it is known to give great mileage to the bikes and this is main purpose why the major bike manufacturers use the technology in their bikes. The DTS-Si technology will likely give unbelievable fuel efficiency provided the bike runs in standard test conditions.

Generally, the 100cc motorbikes do not offer such a mileage but the DTS-Si technology powered bikes give a greater mileage, which is the biggest advantage for the bikes. As the technology uses 2 spark plugs to initiate the combustion of air-fuel mixture, it leaves little unburnt fuel within the engine.

Why is the DTS-Si technology better than the conventional single spark plug equipped engine?

Apart from giving an amazing mileage to the bike, the engine enabled with DTS-Si technology does not compromise on technology. In a traditional single spark plug oriented the combustion process is very slow. This is because the spark plug is located at one end of the combustion chamber, which sparks the air-fuel mixture and the flame inflates like a balloon that takes some time to reach the remote corner of the combustion chamber that delays the combustion process. Whereas, in the DTS-Si technology equipped engine the cylinder head is fitted with two spark plugs at two of corners of the combustion chamber, which ensures that the sparks emit from two ends of the chamber and the air fuel mixture ignites to produce two flame fronts thus, the process of combustion is faster and also the pressure rises at a good pace. This technology in the engine promotes greater torque, fuel-efficiency and low emission.

What do the motorcycle makers have to say on the DTS-Si?

Hero Honda and Bajaj have had two different opinions regarding the performance of 100cc bikes performance in the market. Bajaj was of the belief that the demand for 100cc bikes was fast declining and with time the segment will not have many buyers. And Bajaj quickly testified their belief with the R&D team came up with the DTS-Si technology that ensured fast rate combustion and pressure rise. But TVS Motors claimed that the same could be achieved in a single spark too by inserting differential sparking cycles. There are other engine makers besides TVS who do argue that a good combustion chamber design will not have poor combustion issues, and that should a DTSSi technology improve fuel efficiency, then the combustion chamber design must be bad.

This could be individual opinions but we are seeing the Bajaj bikes; the 150cc and the 220cc ones featuring the DTS-Si technology for good. They have patents for these bikes in various countries. And it cannot be debated that Bajaj bikes with the technology sell like hell; a great marketing tactic and definitely an add on the consumers benefited.

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