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DTSI techonology seminar report for rite college - Free download as PDF File . pdf), Text File .txt) or read online for free. DTS-I Technology seminar report. 1 ABSRTACT: The latest trend of new generation bikes and cars is to use new technology and high speed. It has become a fashion for the people especially. to the digital twin spark ignition (DTSi) technology, which is at the centre of the Royal Enfield working on DTSi-like technology Download.
Helps in better fuel efficiency and lower emissions. Fast and efficient combustion is obtained. Twin overhead cams with camshaft timing variation. Injection fuel feed with integrated electronic twin spark ignition.
A high specific power. Compact design with superior balance.
Four-in-line cylinder Light weight due to all Aluminum - alloy engine block Eight counterweights ensure optimal balancing of the high strength nitride steel crankshaft The pressed-in cast iron cylinder liners for more effective heat dissipation 6 Valve Drive Valves directly acts in V- configuration 46o. Valve timing Actuator operates exhaust and intake valves.
At high and medium-high engine speeds, cylinder filling is optimal.
At low and medium-low engine speeds, fluctuation-free operation is ensured with reduction in specific fuel consumption. The injector injects finely atomized spray of fuel through 6 hole type injectors.
A fast rate of combustion is achieved leading to faster rise in pressure. The obvious outcome of this is more torque, better fuel efficiency and lower emissions. An electronic device microprocessor controls the firing order of these twin spark plugs.
The fresh charge that entered the cylinder during the suction stroke is compressed during the compression stroke. Then a spark will be ignited by one of the twin spark plugs and the flame front begins to expand like an inflating balloon. In the mean while another spark will be ignited by another spark plug as per controls of the microprocessor.
The flame front also begins to expand like an inflating balloon. This technology is incorporated in Bajaj bikes since , in series of Pulsar and Discover.
Ignition timing reference marks can be located on engine parts and on a pulley or fly wheel to indicate the position of the piston. Vehicle manufacturer specify initial or base ignition timing.
Royal Enfield working on DTSi-like technology
If optimum engine performance is to be maintained, the ignition timing of the engine must change as the operating condition of the engine change. All the different operating conditions affect the speed of the engine and load on the engine.
All ignition timing changes are made in reference is made to following primary factors: 2. If combustion is to be completed by 10 degrees ATDC, ignition timing must occur sooner or advanced however, airfuel mixture turbulence increases with rpm.
This causes the mixture inside cylinder to turn faster. Increased turbulence requires that ignition must occur slightly later or be advanced. These two factors must be balanced for the best engine performance. Therefore, while the ignition timing must be advanced as engine speed increases, the amount of advance must be decreased some to compensate for the increased turbulence. Driving uphill or pulling extra weight increases engine load. Under load there is resistance on the crank shaft, therefore the piston has a harder time moving through dead strokes.
This is evident by low vacuum during the heavy loads. Under light loads and with the throttle plates partially opened, a high vacuum exists in the intake manifold.
Uniform power delivery in all operating conditions;? A high degree of drivability;? First rate standards of reliability;? Long service life.
The benefits of this efficient combustion process can be felt in terms of better fuel efficiency and lower emissions. The, ignition system on the Twin spark is a digital system with static spark advance and no moving parts subject to wear. It is mapped by the integrated digital electronic control box which also handles fuel injection and valve timing.
Royal Enfield working on DTSi-like technology
It features two plugs per cylinder. This innovative solution, also entailing a special configuration of the hemispherical combustion chambers and piston heads, ensures a fast, wide flame front when the air-fuel mixture is ignited, and therefore less ignition advance, enabling, moreover, relatively lean mixtures to be used.
This technology provides a combination of the light weight and twice the power offered by two-stroke engines with a significant power boost, i.
At low revs, the over boost is mostly used when overtaking, and this is why it cuts out automatically. At higher revving speeds the over boost will enhance full power delivery and will stay on as long as the driver exercises maximum pressure on the accelerator Fig. Digital electronic ignition with two plugs per cylinder and two ignition distributors;?
Twin overhead cams with camshaft timing variation. Injection fuel feed with integrated electronic twin spark ignition. It includes a number of exclusive engineering solutions resulting in superior power output and exceptional peak torque for this cylinder capacity.
Presentation on theme: "Seminar on :- Digital Twin Spark Ignition(DTSI)"— Presentation transcript:
Its main characteristics are:? Twin overhead cams with camshaft timing variation;? Injection fuel feed with integrated electronic twin spark ignitionSome of the burnt gases are however left in the clearance space. The shape of the torque curve has been perfected to make available fully 16 mkg when revving speed reaches 2, rpm and 18 mkg as early as 3, rpm, thus making the engine's performance much more responsive. The exhaust valve closes shortly after the piston reaches T.
Twin overhead cams with camshaft timing variation. This can be achieved by technology known as DTS-i digital twin spark ignition system which combines strong performance and fuel efficiency.