2.0TFSI vs 3.0TFSI acronym
12-27-2012, 10:47 AM
#1
AudiWorld Senior Member
Thread Starter
2.0TFSI vs 3.0TFSI acronym
I was just thinking, the 2.0 TFSI is 2.0 liter, T for Turbo, and FSI for the direct injection system. Why is the 3.0 also called TFSI if it's supercharged? Shouldn't it be 3.0 SFSI?
12-27-2012, 12:29 PM
#4
AudiWorld Super User
TFSI
Audi was the first manufacturer in the world to combine petrol direct injection with turbocharging in large-scale car production. The success story of the 2.0 TFSI was launched in summer 2004 when it debuted in the Audi A3 Sportback.
Compared with conventional naturally aspirated V6 engines, a turbocharged direct-injection four-cylinder engine delivering the same performance uses 10 to 15 percent less fuel.
FSI technology and turbocharging make such an excellent combination because the evaporation of fuel directly within the combustion chamber in FSI engines removes heat from the intake air. This allows a higher compression, significantly improving engine efficiency. It also solves an old problem in all turbocharged engines – a high tendency to knock at high boost levels.
The integrated turbocharger exhaust manifold module ensures optimum turbine efficiency, resulting in excellent utilisation of the exhaust energy. This achieves both a high power output and optimum engine responsiveness, ultimately helping to reduce fuel consumption and exhaust emissions.
The second generation of 2.0 l TFSI engines, which were introduced in the Audi A4, A5 and Audi Q5 in 2008, featured for the first time valve lift control in the form of the Audi valvelift system on the exhaust side. Significantly improved torque was the result with better low-end torque and a more effective dynamic torque build-up. Alongside performance improvements, these optimisations were also translated into taller gear ratios, bringing about a further reduction in fuel consumption.
The combination of petrol direct injection and a mechanical supercharging module makes the 3.0 l V6 engine, fitted in selected Audi models, a compact power plant with an early maximum torque of 400 Nm sustained over a wide power band – with moderate fuel consumption. With its very spontaneous response and an extraordinary power flow across the entire rpm range, the six-cylinder unit also permits a particularly dynamic driving style.
By bringing together supercharging and petrol direct injection, TFSI unlocks a superior potential: greater power output and more dynamic performance with lower fuel consumption.
2.0 TFSI 132-165kW
aspiration
hot-film air mass meter, cast alloy throttle body with electronically controlled Bosch E-Gas 'drive by wire' throttle butterfly valve, plastic variable length controlled intake manifold with charge movement flaps controlling combustion chamber air movement, BorgWarner K03 water-cooled turbocharger incorporated in exhaust manifold, sandwiched central front-mounted intercooler (FMIC)
fuel system
fully demand-controlled and returnless; - fuel tank–mounted low-pressure fuel pump; Fuel Stratified Injection (FSI): single-piston high-pressure injection pump driven by a four-lobe cam on the exhaust camshaft supplying up to 190 bars (2,760 psi) fuel pressure in the stainless steel common rail fuel rail, four combustion chamber sited direct injection sequential solenoid-controlled six-hole fuel injectors, air-guided combustion process, multi-pulse dual-stage injection during the induction and compression stroke with homogeneous mixing, stratified lean-burn operation with excess air at part load, 95 RON ultra-low sulphur unleaded petrol
ignition system & engine management
centrally positioned longlife spark plugs, mapped direct ignition with four individual direct-acting single spark coils; Bosch Motronic MED 17 electronic engine control unit (ECU), cylinder-selective knock control via two knock sensors, permanent lambda control
3.0 TFSI 213-245kW
aspiration
hot-film air mass meter, Eaton 'Twin Vortices Series' (TVS) Roots-type positive displacement supercharger compressor with 160-degree axial twist twin four-lobe rotors and two integrated water-cooled charge air coolers (one per cylinder bank), mounted within the Vee pumping charged air directly into the inlet manifold
fuel system
fully demand-controlled and returnless; fuel tank–mounted low-pressure fuel pump; Fuel Stratified Injection (FSI): two inlet camshaft double-cam driven single-piston high-pressure injection pumps maintaining a pressure of 30 to 100 bars (435 to 1,450 psi) in the two stainless steel common rail fuel distributor rails (one rail per cylinder bank), six combustion chamber sited direct injection solenoid-controlled sequential fuel injectors, homogenous mixing, stratified-charge combustion (lean-burn) at partial load
ignition system and engine management
mapped direct ignition with centrally mounted spark plugs and six individual direct-acting single spark coils; Bosch Motronic electronic engine control unit (ECU)
1.4 TSI/TFSI 90-133kW
Based on the EA111, this new engine was announced 1.4 litre TSI engine is a "Twincharger", and uses both a turbocharger and a supercharger. Its displacement downsizing leads to improved fuel economy, with 14% more power than the 2.0 FSI, but consuming 5% less fuel. The mechanical supercharger compressor, driven at 1.5 times the speed of the crankshaft, mainly operates at low engine speeds from tick-over up to 2,400 revolutions per minute (rpm) to increase low-end torque. At engine speeds just above idle, the belt-driven supercharger provides a boost pressure of 1.2 bars (17.4 psi). The turbocharger assumes full effectiveness at middle revs, and the engine map disengages the clutch-controlled supercharger at a maximum upper limit of 3,500 rpm; the supercharger will then be bypassed once the turbocharger spools up and reaches sufficient speed to provide adequate boost in the upper rev-ranges.
Audi was the first manufacturer in the world to combine petrol direct injection with turbocharging in large-scale car production. The success story of the 2.0 TFSI was launched in summer 2004 when it debuted in the Audi A3 Sportback.
Compared with conventional naturally aspirated V6 engines, a turbocharged direct-injection four-cylinder engine delivering the same performance uses 10 to 15 percent less fuel.
FSI technology and turbocharging make such an excellent combination because the evaporation of fuel directly within the combustion chamber in FSI engines removes heat from the intake air. This allows a higher compression, significantly improving engine efficiency. It also solves an old problem in all turbocharged engines – a high tendency to knock at high boost levels.
The integrated turbocharger exhaust manifold module ensures optimum turbine efficiency, resulting in excellent utilisation of the exhaust energy. This achieves both a high power output and optimum engine responsiveness, ultimately helping to reduce fuel consumption and exhaust emissions.
The second generation of 2.0 l TFSI engines, which were introduced in the Audi A4, A5 and Audi Q5 in 2008, featured for the first time valve lift control in the form of the Audi valvelift system on the exhaust side. Significantly improved torque was the result with better low-end torque and a more effective dynamic torque build-up. Alongside performance improvements, these optimisations were also translated into taller gear ratios, bringing about a further reduction in fuel consumption.
The combination of petrol direct injection and a mechanical supercharging module makes the 3.0 l V6 engine, fitted in selected Audi models, a compact power plant with an early maximum torque of 400 Nm sustained over a wide power band – with moderate fuel consumption. With its very spontaneous response and an extraordinary power flow across the entire rpm range, the six-cylinder unit also permits a particularly dynamic driving style.
By bringing together supercharging and petrol direct injection, TFSI unlocks a superior potential: greater power output and more dynamic performance with lower fuel consumption.
2.0 TFSI 132-165kW
aspiration
hot-film air mass meter, cast alloy throttle body with electronically controlled Bosch E-Gas 'drive by wire' throttle butterfly valve, plastic variable length controlled intake manifold with charge movement flaps controlling combustion chamber air movement, BorgWarner K03 water-cooled turbocharger incorporated in exhaust manifold, sandwiched central front-mounted intercooler (FMIC)
fuel system
fully demand-controlled and returnless; - fuel tank–mounted low-pressure fuel pump; Fuel Stratified Injection (FSI): single-piston high-pressure injection pump driven by a four-lobe cam on the exhaust camshaft supplying up to 190 bars (2,760 psi) fuel pressure in the stainless steel common rail fuel rail, four combustion chamber sited direct injection sequential solenoid-controlled six-hole fuel injectors, air-guided combustion process, multi-pulse dual-stage injection during the induction and compression stroke with homogeneous mixing, stratified lean-burn operation with excess air at part load, 95 RON ultra-low sulphur unleaded petrol
ignition system & engine management
centrally positioned longlife spark plugs, mapped direct ignition with four individual direct-acting single spark coils; Bosch Motronic MED 17 electronic engine control unit (ECU), cylinder-selective knock control via two knock sensors, permanent lambda control
3.0 TFSI 213-245kW
aspiration
hot-film air mass meter, Eaton 'Twin Vortices Series' (TVS) Roots-type positive displacement supercharger compressor with 160-degree axial twist twin four-lobe rotors and two integrated water-cooled charge air coolers (one per cylinder bank), mounted within the Vee pumping charged air directly into the inlet manifold
fuel system
fully demand-controlled and returnless; fuel tank–mounted low-pressure fuel pump; Fuel Stratified Injection (FSI): two inlet camshaft double-cam driven single-piston high-pressure injection pumps maintaining a pressure of 30 to 100 bars (435 to 1,450 psi) in the two stainless steel common rail fuel distributor rails (one rail per cylinder bank), six combustion chamber sited direct injection solenoid-controlled sequential fuel injectors, homogenous mixing, stratified-charge combustion (lean-burn) at partial load
ignition system and engine management
mapped direct ignition with centrally mounted spark plugs and six individual direct-acting single spark coils; Bosch Motronic electronic engine control unit (ECU)
1.4 TSI/TFSI 90-133kW
Based on the EA111, this new engine was announced 1.4 litre TSI engine is a "Twincharger", and uses both a turbocharger and a supercharger. Its displacement downsizing leads to improved fuel economy, with 14% more power than the 2.0 FSI, but consuming 5% less fuel. The mechanical supercharger compressor, driven at 1.5 times the speed of the crankshaft, mainly operates at low engine speeds from tick-over up to 2,400 revolutions per minute (rpm) to increase low-end torque. At engine speeds just above idle, the belt-driven supercharger provides a boost pressure of 1.2 bars (17.4 psi). The turbocharger assumes full effectiveness at middle revs, and the engine map disengages the clutch-controlled supercharger at a maximum upper limit of 3,500 rpm; the supercharger will then be bypassed once the turbocharger spools up and reaches sufficient speed to provide adequate boost in the upper rev-ranges.
Last edited by spijun; 12-27-2012 at 10:48 PM.
12-27-2012, 03:46 PM
#6
AudiWorld Senior Member
Thread Starter
12-27-2012, 03:48 PM
#7
AudiWorld Senior Member
Thread Starter
And of course, spijun has to chime in with an overly detailed explanation 
spijun: Do you just read Audi sites all day or do you have a job in Sarajevo? =p
spijun: Do you just read Audi sites all day or do you have a job in Sarajevo? =p
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12-27-2012, 06:44 PM
#9
AudiWorld Member
Cheers!
.
