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DTSI engine

performance and emission analysis of DTSI engine

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DTSI engine

  1. 1. “DTS-I Engine” PRESENTED BY : SAGAR DHUMAL (TEME B) GUIDED BY : Mr. S. S. MORE
  2. 2. WHAT IS DTS-I TECHNOLOGY ?
  3. 3. Combustion with and without using DTS-I Technology
  4. 4. “Performance Analysis of DTS-I Engine and single Spark engine 1. Brake thermal efficiency v/s load 2. Brake specific fuel consumption v/s load 3. Volumetric Efficiency v/s Load 4. Detonation
  5. 5. Emission Analysis of DTSI and Single Spark Engine 1. Unburnt Hydrocarbon emission vs load 2. Co Emission v/s load 3. NOx Emission v/s load
  6. 6. Advancement in DTSI Technology • Digital Twin Spark – Swirl Induction (DTS - SI) • Digital Twin Spark – Fuel Injection (DTS - FI) • Digital Triple Spark Ignition (DTSI) • Intelligent CDI • TRICS III (3RD GENERATION) • Advancement in Bike Cooling System • ExhausTEC
  7. 7. Digital Twin Spark – Swirl Induction (DTS - SI) • The Swirl Induction concept, which is meant for producing higher turbulence in the combustion chamber. • Swirl Induction is nothing but imparting a swirling motion to the fresh charge that enters the combustion chamber. • This can be done by making slight modifications in the ports positioning of engine.
  8. 8. DTS-I Triple Spark Engine • Engine has 3 spark plugs in the combustion chamber. the primary plug is at centre at an angle and other two secondary plugs are mounted below, each opposite to each other. • The secondary plugs fires a bit after the primary one has fired and the timings are controlled by the ECU depending on throttle position, engine rev, load on engine.
  9. 9. Digital Twin Spark-Fuel Injection (DTS-FI) • In fuel injection the conventional carburettor has been replaced by injector which injects fuel in to the engine in a spray form based on the instructions of the Engine Control Unit (ECU) . • ECU processes information sent by various sensors and instantly determines optimum fuelling and spark timing for various engine operating conditions.
  10. 10. Intelligent CDI (Capacitor Discharge Ignition) • It contains a microprocessor, which continuously senses different speeds and load on engine and responds by altering ignition timing. • Working together with the TRICSIII system, the microprocessor’s memory provides optimum ignition timings for any given engine rpm.
  11. 11. TRICS III (3RD GENERATION) • TRICS III stand for Throttle Response Ignition Control System III Generation. • Depending on the needs of the rider whether it be cruising, acceleration or max speed, the ignition requirements constantly change. • Based on a particular amount of throttle opening, the magnetic field generated by the magnet opens or closes the reed switch. The reed switch is connected to the Digital C.D.I., which signals the C.D.I. to change / switch, the desired ignition advance timing maps.
  12. 12. Advancement in Bike Cooling System • Bajaj Pulsar 200 NS has liquid cooled engine • Heart of this system is radiator and blood of the system is the coolant or liquid which circulates through the channels made just outside of the cylinder wall to absorb the heat and comes back to radiator to cool down. • Motul Moto Cool expert or Castrol Radicool is used is coolant.
  13. 13. ExhausTEC • ExhausTEC is a device incorporated in the exhaust system. • TEC stands for ‘Torque Expansion Chamber’. It is a tuned box (resonator) fitted onto the header pipe of the exhaust. • In the lower rpm zones, the ExhausTEC helps to build a negative pressure pulse (vacuum) at the exhaust valve, thereby sucking in more air-fuel mixture into the cylinder during intake valve opening
  14. 14. Other Vehicle Manufacturer's That uses Twin spark Technology 1. TVS Motors (CC-VTI) 2. Royal Enfield (Transistorised Coil Ignition) 3. Honda (i-DSI) 4. Alfa Romeo
  15. 15. TVS Motors (CC-VTI) • TVS MOTOR, in collaboration with AVL, Austria develops twin spark,3Valve Engine comes with Controlled Combustion Variable Timing Intelligent (CC-VTI) technology. • In addition with two sparks plug it has 2 intake ports called Swirl port & Power port. • Swirl port creates swirl motion of air-fuel mixture and Power Port gives high flow rate and then twin sparks produces flame that helps in efficient combustion of lean air-fuel mixture thus giving highest fuel economy in its class.
  16. 16. Royal Enfield • Royal Enfield uses Twin spark technology in its Thunderbird, Bullet 350cc,Bullet Electra. • Twin spark improves performance.
  17. 17. Honda (i-DSI) • ‘i-DSI’ stands for Intelligent-Dual Sequential Ignition system. • It has two spark plugs per cylinder are arranged diagonally to accelerate flame propagation, Each spark plug is directly controlled for independent ignition timing by eight separate ignition coils. • Each pair of spark plugs is fired sequentially with the interval between the two depending on engine rpm and load. The intake side plug ignites first, then as the flame propagates, the exhaust side plug is fired.
  18. 18. Alfa Romeo Twin spark • Alfa Romeo putting 2 spark plugs in each cylinder. As ignition takes place in two locations rather than one. • The two sparks fire one after the other on the power stroke causing higher compression as the flame front travels across the combustion chamber. The second spark firs in the extra compressed mix, ensuring a cleaner burn and less unburnt fuel in the exhaust as well as a higher thermodynamic efficiency.

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