What does Volkswagen TSI mean?
2 Answers
Volkswagen TSI is a high-performance but small-displacement turbocharged engine designed by Volkswagen. TSI (Twincharger-Stratified-Injection) refers to the twin-charging (turbo and supercharger) stratified injection technology. The principle of turbocharging is to use the inertial impulse of the exhaust gas discharged by the engine to drive the turbine in the turbine chamber, which in turn drives the coaxial impeller. The impeller pressurizes the air sent from the air filter pipeline, allowing it to enter the cylinder under increased pressure. The increased air pressure and density enable the combustion of more fuel, significantly enhancing the engine's output power. Below is an introduction to TSI: 1. The comprehensive advantage of the TSI engine is its minimal power loss and relatively increased output power. It can achieve higher torque and horsepower with a small displacement, thereby delivering greater power. 2. The application of direct injection and turbocharging technologies enhances power output. The most notable advantage is that the TSI engine can generate high torque at low RPMs and maintain maximum torque output across a wide RPM range, ensuring continuous and robust power delivery, which provides drivers with more driving pleasure. 3. However, the TSI engines introduced for domestic production by Volkswagen in China omit the supercharger and stratified combustion (Fuel-Stratified-Injection) components. Only the combination of a single turbocharger and direct injection technology is experienced.
T stands for Turbocharger, S for Supercharger, and I for Fuel Stratified Injection. These three letters together form Volkswagen's unique powertrain signature. However, the TSI is not the same in China and abroad. The international version actually combines both turbocharging and supercharging in the engine, delivering a particularly aggressive throttle response. In China, it's simplified to turbocharging with direct fuel injection, which is more cost-effective and fuel-efficient. The numbers on the rear badge, like 300TSI, indicate the torque rating—the higher the number, the more powerful the engine. Nowadays, most new models use this technology, offering quick acceleration and fuel efficiency, with fuel consumption even in traffic jams kept under 10 liters per 100 kilometers.
