New Audi 1.8 TFSI Engine

New Audi 1.8 TFSI Engine View

The brand with the four rings has completely revised the details of the 1.8 TFSI engine, which can be fitted in the Audi A5 updated family announced. The turbocharged four-cylinder petrol engine is the basic – for Europe and is able to deliver 170 horsepower and 236 lb.ft. (320 Nm), while recurring 5.7l/100km (41.27 U.S. mpg).

This means that consumption is reduced by 21 percent over the previous model engine.

With a manual gearbox, the 1.8 TFSI in the Audi A5 Coupé accelerates from zero to 100 kph (62.14 mph) in 7.9 seconds on the way to a top speed of 230 kph (142.92 hours miles). The whole time just 134g/km CO2 emissions.

“Fire behavior was a particular focus on the development of the work,” says Audi. In addition to the FSI direct injection, the 1.8 TFSI also uses indirect injection. This system injects fuel at the end of the intake manifold near the valves dryer, where it is rotated heavily in the air. Indirect injection used in the partial load range.

It reduces fuel consumption and emissions of particles, so that the four-cylinder engine already meets the limits of the future Euro 6 standard, which is not in force until 2015.

The rail pressure of the FSI system 150 is increased to 200 bar. Direct injection is active at startup and at higher loads. There may be two or three separate injections per cycle. To further optimize the gas exchange, the control valve has a greater operational freedom. The Audi valve lift system, the lift of the valves is in two phases, is active on the exhaust side. The two camshafts can be adjusted by 30 or 60 degrees crank angle.