An experimental study was performed in a firing SI engine at conditions representative of the
warmup phase of operation in which liquid gasoline films were established at various …

Wall film formation and evaporation were studied on a flat wall inside a constant-volume
vessel using a three-dimensional numerical method. The computation was based on the …

Kurzfassung Die Kolbengruppe des Verbrennungsmotors ist ein Dichtsystem in
Relativbewegung, das im Spannungsfeld zwischen optimaler Dichtfunktion und niedrigen …

In internal combustion engines, a portion of liquid fuel spray may directly land on the liner
and mix with oil (lubricant), forming a fuel-oil film (~ 10μm) that is much thicker than the …

The evaporation of the fuel wall film considerably affects the performance and exhaust
emissions of internal combustion engines. An analytical model for wall film heating and …

Die vorliegende Arbeit entstand während meiner Doktorandentätigkeit in der Abteilung
Tribologie am Daimler Research & MBC Development Zentrum Ulm. Die universitäre …

Nearly all of the hydrocarbon emissions from a modern gasoline-fueled vehicle occur when
the engine is first started. One important contributing factor to this is the fact that, during this …

The liquid fuel film on the cylinder liner is believed to be a major source of engine-out
hydrocarbon emissions in SI engines, especially during cold start and warm-up period …

Stringent regulations on exhaust emissions and fuel economy for vehicles have become
major issues in the automotive industry. Hybrid electric vehicles (HEV) are one of the crucial …

In a four-stroke cycle port-fuel-injected spark-ignition engine, a significant portion of
unburned hydrocarbons is exhausted during the short period of cold start. The aim of this …