The new 2.7 l V6 TDI Audi engine represents an evolution in the new Audi V-engine family with cylinder centres spaced at 90 mm. This paper describes the most significant features in terms of construction characteristics, thermodynamics and after-treatment system. The main engine development priorities were to fulfil the following requirements: - Audi's sporty brand orientation, - V-engine criteria (favourable power/weight ratio, extremely compact construction), - Euro4 emission level compliance combined with outstandingly good acoustics. After an engine description, the following components are outlined in the paper: - cylinder head,- chain drives, - crankcase and main bearing assembly, - fuel injection system,- air supply and intake pipes with swirl flaps,- exhaust system and turbocharger, -exhaust gas recirculation system. Concerning thermodynamics and exhaust emission control, the following issues are discussed: - combustion chamber, - swirl control and combustion chamber filling,- fuel injection system,- exhaust gas recirculation,- turbo charging and charge-air intercooling, - engine management, - exhaust emission control. Full-load values for the engine, and performance and fuel consumption of the engine with and without DPF are shortly described.
New Audi 2.7 l V6 diesel engine with piezo injectors and catalysed soot filter
Der neue Audi-V6-2.7-l-Dieselmotor mit Piezo-Injektoren und Partikelfilter
2004
16 Seiten, 14 Bilder, 1 Tabelle
Aufsatz (Konferenz)
Englisch
Abgasemission , Abgasrückführung , Abgasturboaufladung , Dieselmotor , Direkteinspritzung , Einspritzdüse , elektrisches Steuergerät , Emissionsminderung , Fahrzeugmotor , geregelter Katalysator , Grenzwert , Kurbelgehäuse , Motorgeräusch , Personenkraftwagen , piezoelektrischer Aktor , Ruß , Thermodynamik , Verbrennungsraum , Zylinderkopf
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