performance and emission analysis of DTSI engine

1. “DTS-I Engine”
PRESENTED BY :
SAGAR DHUMAL
(TEME B)
GUIDED BY :
Mr. S. S. MORE

2. WHAT IS DTS-I TECHNOLOGY ?

3. Combustion with and without using DTS-I
Technology

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. 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. 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. 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. 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. 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carburettor has been replaced by injector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. 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. 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. 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. 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. 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. 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. Royal Enfield
• Royal Enfield uses Twin spark
technology in its Thunderbird, Bullet
350cc,Bullet Electra.
• Twin spark improves performance.

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. 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.