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This technical paper collection contains 27 papers on SI combustion published from the 2011 Powertrain Fuels and Lubricants Conference.

The 30 papers in this technical paper collection present topics in the field of spark-ignited combustion and technologies that improve the efficiency and emissions of spark-ignition engines by improving fuel preparation, gas exchange, ignition, and the combustion process itself. This includes alternative fuel and bio-fuel applications in terms of how they affect the combustion process. Papers also explore advancements in DISI engine technology, including spray formation and mixing, injection technology and modeling strategies, and its synergies with other advanced engine technologies.

Direct injection spark ignition (DISI) engines will play a major role in improving vehicle fuel efficiency. The 41 papers in this technical paper collection explore the advancements in DISI engine technology, including spray formation and mixing, injection technology and modeling strategies, and its synergies with other advanced engine technologies. Also included are papers on general topics in the field of spark-ignited combustion and gasoline engines.

The 37 papers in this technical paper collection focus on SI combustion technologies that employ direct, in-cylinder fuel injection. Topics of particular interest include in-cylinder fuel injection and spray studies, flow/spray interaction and in-cylinder mixture formation studies, and combustion chamber shape optimization. Papers also focus on combustion technologies in 4-stroke and 2-stroke engines, including premixed, port injected, and DI engine.

The16 papers in this technical paper collection focus on combustion technologies in both 4-stroke and 2-stroke engines characterized by 1) ignition by an external energy source that serves to control combustion phasing, and 2) a combustion rate that is limited by flame propagation. Gasoline as well as alternative fuels such as ethanol, CNG, and blends are considered. Topics include studies of mixture formation, ignition, knock, engine efficiency, flame propagation, and emissions formation.

The 13 papers in this technical paper collection discuss SI combustion. Topics covered include studies of mixture formation, ignition, knock, engine efficiency, flame propagation, alternative fuels and emissions formation, and more. The 13 papers in this technical paper collection discuss SI combustion. Topics covered include studies of mixture formation, ignition, knock, engine efficiency, flame propagation, alternative fuels and emissions formation, and more.

The 22 papers in this technical paper collection focus on combustion technologies in both 4-stroke and 2-stroke engines characterized by 1) ignition by an external energy source that serves to control combustion phasing, and 2) a combustion rate this is limited by flame propagation. Topics include studies of mixture formation, ignition, knock, engine efficiency, flame propagation, alternative fuels and emissions formation.

This technical paper collection contains 9 papers published from the 2011 Small Engine Technology Conference.

The 12 papers in this technical paper collection explore the issues and design strategies of bringing sustainable EV, PHEV, and vehicle electrification technologies to market.