Turbo fuel stratified injection
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Turbocharged fuel stratified injection (TFSI) denotes a type of forced-aspiration ("turbo") engine where the fuel is pressure-injected straight into the combustion chamber in such a way as to create a stratified charge. FSI (VAG) direct injection technology increases the torque and power of spark-ignition engines, makes them as much as 15 percent more economical and reduces exhaust emissions.[1]
Advantages
Some advantages of TFSI engines:
- Better fuel distribution and better fuel charge inside the combustion chamber
- During the injection process the fuel gets evaporated, cooling the cylinder chamber
- Higher compression ratios, which translates into more power
- Increased fuel combustion efficiency
- Higher power during pick-up of vehicle.
Disadvantages
- Huge rise of number of emitted exhaust particles
- Carbon build up behind the intake valves. Since fuel is directly injected inside the combustion chamber, it never gets a chance to wash any contaminants behind the valves. Resulting in excessive carbon build up.
References
- ^ "Archived copy". Archived from the original on April 28, 2009. Retrieved July 24, 2009.
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External links
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