A lean-burn CNG heavy-duty engine, derived from a Diesel engine, provided the same performance of the Diesel engine and very low smoke emissions. Moreover higher thermal efficiency respect to stoichiometric engines was obtained. The engine met 91/542 CEE European emission limits for CO, NO(x), HC and particulate if a catalytic converter to oxidize total hydrocarbons was used. The speciation of VOC (Volatile Organic Compounds) was performed in order to measure non-methane hydrocarbon emissions and to evaluate the effect of catalyst on individual organic compounds. As expected methane resulted the main component of the exhaust hydrocarbons (more than 90 %), consequently the engine could be able to comply with future stricter emission standard if only non-methane HC were taken into account.
Lean-burn technology for CNG heavy duty engines
Magerverbrennungstechnologie für Motoren, die mit komprimiertem Erdgas betrieben werden und für den Schwerlastverkehr vorgesehen sind
1994
7 Seiten, 4 Bilder, 4 Tabellen, 6 Quellen
Conference paper
English
Fahrzeugmotor , Lastkraftwagen , Magermischmotor , Emissionsminderung , Kraftstoff , Erdgas , Technikbewertung , thermischer Wirkungsgrad , Stöchiometrie , Schadstoffemission , Kohlenmonoxid , Stickoxid , Kohlenwasserstoff , Richtlinie , Europa , Abgaskatalysator , Abgasströmung , Abgaszusammensetzung
Lean-burn technology for CNG heavy duty engines
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