What does Tiguan tsi mean?

Tiguan TSI refers to the direct injection technology in the dual-supercharged cylinder, TSI is the abbreviation of turbo FSI, T is turbocharged, S is supercharged and I is stratified direct injection. Simply put, TSI is a turbocharged FSI.

TSI is more advanced than FSI, and it is an engine with high power, low speed and high torque. TSI fuel direct injection technology realizes the perfect combination of engine power and fuel economy under the same displacement. It is the most mature and advanced fuel direct injection technology in today's automobile industry engine technology, leading the development trend of gasoline engines.

In design, TSI engine is different from other traditional engines in that it is equipped with an on-demand controlled fuel supply system, and each cylinder has four valves, a variable intake manifold and continuously adjustable intake and exhaust camshafts. Gasoline is directly injected into the combustion chamber, and the single-piston high-pressure pump * * rail high-pressure injection system is responsible for providing accurate fuel, forming a working pressure of 30- 100bar. At the same time, the geometric design of the fuel chamber and the function of accurately calculating the millisecond gasoline injection greatly improve its compression ratio, which is also a necessary prerequisite for efficient new engines. In terms of air intake, TSI engine adopts variable intake manifold, and the required air flow is controlled by electronic system, which realizes the adjustment of throttle valve without deterioration and improves the charging efficiency, thus obtaining higher power boost and making the engine's power response more direct.

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