Some German automobiles are known for their Turbo Fuel Stratified Injection engine (TFSI). We wrote at length about the TFSI engine in an earlier post, which you can read here. Audi just recently released a new variant of this engine, currently available for the next-generation A4, released late 2015. Learn about Audi’s new TFSI engine and the new combustion method it delivers.
The Mechanics Behind the Audi TFSI Engine
Of course, German engines require maintenance from a VW & Audi service. The TFSI engine is no exception. The new model produces up to 190 horsepower and 236 lb-ft of torque. This is made possible thanks to a new combustion technique that operates similarly to the Miller cycle.
The Miller cycle utilizes a supercharger and an intake valve that stays open during a part of the compression stroke. This results in about a 15% increase in engine efficiency.
The difference, though, lies in the crank angle that has been reduced from 200 to 140 degrees. A higher boost pressure on the inlet side has also been added. This reduces the engine’s intake time without reducing its cylinder charge. With the improved combustion cycle, the A4 delivers a remarkably improved compression ratio.
The new TFSI engine also experiences less friction and less time in the warm-up phase. Though currently only available for the A4, other Audi models are expected to follow suit.
Please read up on Jim Buttera’s story and why Buttera Motors is Kirkland’s go-to service for German car owners. Come to us for all Audi and VW repair services. Remember, German car engines have a different construction and require specialized attention. This is the case for the new Audi TFSI engine, its predecessor, and any engine under the hood of an Audi or VW.
Edited by Justin Vorhees
German Vehicle Engine Inspection from the Pros
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