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The 13 papers in this technical paper collection discuss variable valve actuation mechanisms, devices, and systems; and the impact and control of such systems on thermodynamics, combustion, fuel economy, emissions, and performance.

Providing thermal comfort to the occupants and thermal management of components in an energy efficient way has challenged the automotive industry to search for new and innovative approaches to thermal management. Hence, management of heat flow, coolant flow, oil flow, and airflow is extremely important as it directly affects the system performance under full range of vehicle operating conditions. The 31 papers in this technical paper collection describe methods or concepts to increase efficiency, improve occupant comfort, improve test methodology and minimize the environmental impact of the climate control system; and thermal management components addressing design and/or application topics.

This technical paper collection contains 7 papers published from the 2011 Small Engine Technology Conference.

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.

Computational modeling and analysis of Reactivity Controlled Compression Ignition (RCCI) combustion. Papers focus on analyzing and improving RCCI combustion using novel injection strategies, combustion chamber designs, and fueling combinations.

The 9 technical papers in this technical paper collection cover topics regarding new CI and SI engines and components. This includes analytical, experimental, and computational studies covering hardware development as well as design and analysis techniques.

The 8 technical papers in this collection feature CI combustion technologies distinguished by 1) mixing processes that influence combustion; and 2) combustion phasing closely coupled to the timing of fuel injection. This includes the impact of the fuel injection and jet-mixing processes; impact of swirl/spray targeting on mixing processes; combustion chamber/engine geometry optimization; sources of combustion inefficiency; and the impact of operating conditions.

The 24 papers in this technical paper collection detail powertrain control and optimization. Topics include: fuzzy knock control of diesel-dual-fuel engine; sliding sector mode control with linear parameter varying diesel engine model; optimizing 12 volt start - stop for conventional powertrains; open source rapid prototyping environment; and more.

The 32 papers in this technical paper collection cover powertrain control system and optimization processes related to achieving stringent market fuel economy, emissions, performance, reliability, and quality demands. Topics include the control, calibration, and diagnostics of the engine, powertrain, and supporting electromechanical subsystems related to energy management in conventional and hybrid operation.

The 22 papers in this technical paper collection discuss powertrain control and calibration. Topics covered include signal processing, on-board diagnostic strategy development, sensor, actuator, electronic control unit designs, and more. The 21 papers in this technical paper collection discuss powertrain control and calibration. Topics covered include signal processing, on-board diagnostic strategy development, sensor, actuator, electronic control unit designs, and more.

The 19 Technical Papers in this collection address modeling, simulation, analysis, and control (MSA&C) of components, subsystems, and systems pertinent to aerospace power. This includes: tools and techniques, platforms, Mission and Campaign level MSA&C, and Verification and Validation of MSA&C.

Papers in this collection focus on particle emissions from combustion engines, including measurement and testing methods, and the effects of changes in fuel composition. Topics of the environmental and health effects of elemental carbon and organic carbon that constitutes solid cored particles, plus the environmental and health effects of secondary organic aerosol emissions, are also addressed. This includes particulate emissions from both gasoline and diesel engines.

Papers in this collection focus on particle emissions from combustion engines, including measurement and testing methods, and the effects of changes in fuel composition. Topics of the environmental and health effects of elemental carbon and organic carbon that constitutes solid cored particles, plus the environmental and health effects of secondary organic aerosol emissions, are also addressed. This includes particulate emissions from both gasoline and diesel engines.

This technical paper collection focuses on particle emissions from combustion engines, including measurement and testing methods, and the effects of changes in fuel composition. Papers also cover the topics of the environmental and health effects of elemental carbon and organic carbon that constitutes solid cored particles plus the environmental and health effects of secondary organic aerosol emissions. This includes particulate emissions from both gasoline and diesel engines.

This technical paper collection includes papers on PM measurement methods, soot generation, alternative methods of PM mass determination, in-cylinder contol of emissions, the effects of EGR, biodiesel fuels, duel fuel systems, soot emissions modeling, PM emissions from gasoline engines, including GDI, ethanol effects, and modeling.

The papers in this collection cover topics regarding new CI and SI engines and components. This includes analytical, experimental, and computational studies covering hardware development, as well as design and analysis techniques.

The papers in this collection cover topics regarding new CI and SI engines and components. This includes analytical, experimental, and computational studies covering hardware development, as well as design and analysis techniques.

The 24 papers in this technical paper collection cover topics regarding new CI and SI engine components. This includes analytical, experimental, and computation studies covering hardware development as well as design and analysis techniques.

This collection covers advances in the development and application of models and tools involved in multi-dimensional engine modeling: advances in chemical kinetics, combustion and spray modeling, turbulence, heat transfer, mesh generation, and approaches targeting improved computational efficiency. Papers employing multi-dimensional modeling to gain a deeper understanding of processes related to turbulent transport, transient phenomena, and chemically reacting, two-phase flows are included in this collection.

This collection covers advances in the development and application of models and tools involved in multi-dimensional engine modeling: advances in chemical kinetics, combustion and spray modeling, turbulence, heat transfer, mesh generation, and approaches targeting improved computational efficiency. Papers employing multi-dimensional modeling to gain a deeper understanding of processes related to turbulent transport, transient phenomena, and chemically reacting, two-phase flows are included in this collection.