The full form of DTS-i is Digital Twin Spark Ignition

DTSi, or Digital Twin Spark Ignition System, is a technology developed and patented by Bajaj Auto Limited. It was first used in their Pulsar and Avenger models. At the time of its introduction to the market, it was considered revolutionary as it both saved fuel and improved engine performance.

In automobile engineering, achieving perfect combustion is impossible due to the losses that occur in the combustion chamber, due to the design of the internal combustion engine and because fuel does not burn instantaneously. However, the DTSi engine attempts to achieve complete combustion by making the combustion process as fast as possible.

The DTSi engine gives twice the power of a regular two-stroke engine along with a significant power boost, and it has a sizable power-to-weight ratio as compared to a few four-stroke engines. It can also adjust idling speed and even cuts off fuel feed when the throttle is released and thus controls the enrichment of the air-fuel mixture for cold starts and acceleration.

Additionally, it ensures the upper rev limit isn’t breached. At rower revs, enables over boost which is cut out when not used for overtaking, and at higher speeds, this over boosts aids in full power delivery and will be enabled as long as the throttle is open.