Turbo diesel TEOS V8

Based in Austria, Austro already is planning production of the 330-kw (440 hp) AE440 for the fixed-wing market, to meet demand for a jet-fuel engine with higher power and lower fuel consumption than offered by its in-production 125-kw AE300 diesel. The light helicopter market may take longer to penetrate, but a competitive diesel-cycle engine could yet breathe new life into the sector.

Clean Sky’s goal is to demonstrate reductions of 30% in sfc, 40% in carbon-dioxide and 50% in nitrogen-oxide emissions in the EC120’s turbine engine. A 30% reduction in direct operating cost and a doubling of range with the same fuel are also targets. The AE440 has a weight-to-power ratio of 0.8 kg/kw (1.3 lb./hp) and a fuel consumption of 235 g/kwh (0.386 lb./hp-hr.) at takeoff power.

The keys to the AE440’s performance are its aluminum construction and fuel injection, both of which come from the automotive industry. Austro’s four-cylinder AE300 is based on a Mercedes diesel and is a cast steel engine. The AE440 is an all-new engine made of lightweight, machined aluminum. In production, this will be changed to less costly but still lighter cast aluminum, as used in race cars.

Common-rail direct fuel injection operating at a 1,800 bar (26,000 psi) provides precise injection of less fuel at higher pressure for improved atomization and combustion, and reduced fuel consumption. Two high-pressure fuel rails feed individual injector valves digitally controlled by the engine management system.

Paul a écrit:Et quel est le niveau d'émission ?