What is the difference between FSI and TFSI?

[SanEmmanuel]

FSI and TFSI differences: FSI is a gasoline direct injection technology that injects fuel directly into the combustion chamber, reducing engine heat loss, increasing output power, and lowering fuel consumption; TFSI is an FSI engine with turbocharging, which uses the high-temperature and high-pressure exhaust gas from the engine to drive the turbine at high speed. The main function of turbocharging is to increase the engine's air intake. The high-speed rotation of the turbine drives the intake turbine to compress the intake air, increasing air density, while the computer controls an increase in fuel injection to match the high-density intake air. Therefore, the engine's working efficiency can be improved without changing the displacement.