Henning Hoffmann

Der neue 3-l-V6-TDI-Motor von Audi

Audi prasentiert mit dem 3,0-l-V6-TDI-Motor den ersten Sechszylinder-Dieselmotor der neuen Audi-V-Motorenfamilie. Mit seinem Piezo-Common-Rail-Einspritzsystem der dritten Generation erreicht er eine Maximalleistung von 171 kW bei 4000/min und ein Drehmoment von 450 Nm bei 1400/min. Sowohl der Audi A8 als auch der neue Audi A6 sind mit dem 3,0-l-V6-TDI-Motor souveran motorisiert und uberzeugen durch Spontaneitat und Laufruhe.

Der V6-TDI-Motor von Audi

Der erste Vierventil-2,5-l-V6-TDI-Motor ging 1997 mit 110 kW und Abgasstufe Euro 2 in Serie. 1999 kam der auf 132 kW leistungsgesteigerte V6-TDI-Motor hinzu, der gleichzeitig auch die Euro-3-Grenzwerte erfullte. Das hohe Potenzial dieses V6-TDI-Motors zeigt sich nun darin, dass er der weltweit erste V6-TDI-Dieselmotor ist, der unter Serienbedingungen die extrem scharfen Euro-4-Grenzwerte auch in der Oberklasse erfullt.

Der neue 4,2-l-TDI-V8-Motor von Audi

Audis 4,2-l-V8-TDI-Motor eine Weiterentwicklung des 4,0-l-TDI-Motors. Den neuen Motor zeichnen eine Motorleistung von 240 kW und ein Drehmoment von 650 Nm aus. In Kombination mit CSF-Diesel-Partikelfilter wird die Abgasnorm Euro 4 erfullt. Es wurde der Zylinderabstand von 88 auf 90 mm erhoht und das Einspritzsystem auf Piezo-Technik umgestellt. Das Abgasruckfuhrsystem, die Verbrennung und die Turboaufladung wurden weiter optimiert. Das Titelthema der vorliegenden MTZ beschreibt die Konstruktion und Mechanik des neuen Motors. In der nachsten Ausgabe erscheint der zweite Teil mit den Themen Thermodynamik, Applikation und Abgasnachbehandlung.

Audi 4.0 V8-TDI

The 4.0-litre V8 TDI now being introduced by Audi is the first diesel in its new family of V engines. The new V8 diesel is notable for its high power output of 202 kW and vigorous torque of 650 Nm. Its noise pattern and refinement are excellent. This V8 TDI engine harmonises convincingly with the new Audi A8, making it the most sporty diesel-engine car in the large luxury class. Development of the new engine is described in two articles. The first part presents the engine’s design and mechanical features, while the second describes its thermodynamics and applications.

The Audi 6.0 l V12 TDI engine

With the newly developed 6.0 l V12 TDI engine, Audi presents the world’s most powerful and high-torque diesel engine in a passenger car. The V12 TDI is characterised by its extremely high power output of 368 kW and 1,000 Nm of torque. The 6.0 TDI features in the Audi Q7. This new engine puts the Audi Q7 into the same league as the sportiest high-performance SUVs, while delivering the low fuel consumption that is typical of a TDI. On the one hand the engine has typical 12-cylinder design features, such as the 60° angle between the cylinder banks, whereas on the other hand a large number of synergies with the familiar Audi V6 and V8 TDI engines have been implemented. It rounds off the Audi V-engine range at the top end. The development of the new engine is illustrated in two reports. The first part describes the design and the mechanics, while the second part in MTZ 11/2008 deals with thermodynamics, application and exhaust treatment.

The new 4,2-I-TDI-V8 engine from Audi

Audi’s 4,2-I-V8-TDI engine reveals the consistent onward development of the 4,0-I-TDI engine that hitherto had been offered in the Audi A8. The new V8 TDIs are characterised by very high engine power — 240 kW — and torque of 650 Nm. By using a CSF diesel particle filter the EU 4 exhaust gas norm is satisfied. In the new engine, the cylinder gap is increased from 88 to 90 mm and the injection system converted to piezo technology. The exhaust recirculation system, combustion and turbo-charging have been further optimised. The development of the new engine is documented in two reports. The first part describes the design and mechanics, the second part the thermodynamics, application and exhaust-gas treatment.

Audi V6 TDI engine

The first 2.5-litre V6 TDI engine with four valves per cylinder went into production in 1997. It developed 110 kW and complied with the EU II exhaust emission legislation. In 1999 it was joined by an uprated V6 TDI engine with its output increased to 132 kW, which none the less satisfied the Euro 3 exhaust emission limits. The exceptional potential offered by this engine is now evident in the fact that it has been developed into the first production V6 TDI unit for use in a large luxury car that is capable of satisfying the extremely stringent Euro 4 exhaust emission limits.