What do the letters in Audi represent?

1 Answers
GenevieveLynn
07/25/25 1:59pm
Audi's letter combination TFSI stands for Turbocharged (T) FSI engine. Here is information about FSI: 1. FSI is the abbreviation for Fuel Stratified Injection, which means fuel stratified injection technology in Chinese. It represents a future development direction for engines. Fuel stratified injection technology is a type of lean-burn technology for engines. What is lean burn? As the name suggests, it means the gasoline content in the engine's air-fuel mixture is low, with a gasoline-to-air ratio that can reach 1:25 or higher. 2. FSI can directly inject fuel into the combustion chamber, reducing the engine's heat loss, thereby increasing output power and lowering fuel consumption, benefiting both fuel economy and power performance.
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