What does TSI mean on a car?

[CassidyAnn]

In automotive terms, TSI stands for Turbocharged Stratified Injection. Here's the breakdown: T represents Turbocharger, S stands for Stratified Combustion, and I denotes Direct Injection. Below are introductions to stratified combustion and direct injection: Stratified Combustion Introduction: This refers to a fuel injection process where atomized fuel in the cylinder forms a gradient from rich to lean concentrations. The spark plug controls ignition based on this fuel concentration gradient. The advantages include better fuel efficiency, improved combustion, and superior emission performance. Direct Injection Introduction: Direct injection means the fuel injector, like the spark plug, is installed inside the cylinder. The injector sprays fuel directly into the cylinder for combustion. Benefits include precise control of the air-fuel mixture ratio and reduced carbon buildup in the intake tract.