DTSI stands for Digital Twin Spark Ignition System has two spark plugs located opposite each other speed and efficient combustion takes place. now a days popular in bajaj discover gear bikes... In outside engine the DTS-i sticker pasted for Digital Twin Spark Ignition System. The term usually used for 4 stroke petrol engine.
Digital Twin Spark-Swirl induction the latest technology used in Bajaj bikes the charge is swirl inside the combustion. For better flame propagation and it gives more efficiency compared to conventional 4 stroke engine.
DTS-Fi stands for "Digital Twin Spark Fuel Injection", a ‘Bajaj Patented Technology’. In fuel injection the conventional carburettor has been replaced by injector which injects fuel in to the engine in a spray form based on the instructions of the Engine Control Unit (ECU) which is a part of the Engine Management System EMS. The Electronic Control Unit (ECU) is microprocessor based and is the brain of the fuel injection system.