Results 181 to 190 of about 4,697 (226)

On HCCI Engine Knock

SAE Technical Paper Series, 2007
<div class="htmlview paragraph">Knock in a HCCI engine was examined by comparing subjective evaluation, recorded sound radiation from the engine, and cylinder pressure. Because HCCI combustion involved simultaneous heat release in a spatially large region, substantial oscillations were often found in the pressure signal.
Morgan M. Andreae, Wai K. Cheng, Thomas Kenney, Jialin Yang   +3 more
openaire   +1 more source

HCCI: a combustion for the future?

International Journal of Vehicle Design, 2006
The current success of the diesel engine is undoubtedly linked to the remarkable trade-off between performance and fuel economy that this offers to customers. Therefore, the necessary reduction of tail pipe pollutant emissions, such as nitrogen oxides and soot, must not threaten this contribution to reducing the global warming effect by unacceptable ...
Gilles Coma, Patrick Gastaldi
openaire   +1 more source

Strategien zur Regelung von HCCI-BrennverfahrenControl Concepts for a Gasoline HCCI Combustion Engine

at - Automatisierungstechnik, 2009
Zusammenfassung Es werden Konzepte zur Regelung eines HCCI-Brennverfahrens (Homogeneous Charge Compression Ignition) mit interner Abgasrückführung (Trapping) bei Otto-Motoren vorgestellt. Die Konzepte basieren auf Verbrennungsmerkmalen, die aus dem Brennraumdrucksignal gewonnen werden.
Roland Karrelmeyer, Gerald Graf, Daniel Scherrer, Wolfgang Fischer, Jean-Pierre Harthout   +4 more
openaire   +1 more source

Characteristics of Isopentanol as a Fuel for HCCI Engines

SAE International Journal of Fuels and Lubricants, 2010
<div class="section abstract"><div class="htmlview paragraph"> Long chain alcohols possess major advantages over the currently used ethanol as bio-components for gasoline, including higher energy content, better engine compatibility, and less water solubility. The rapid developments in biofuel technology have made it possible to produce
Yang, Yi, Dec, John, Dronniou, Nicolas, Simmons, Blake   +3 more
openaire   +4 more sources

Supercharging HCCI to Extend the Operating Range in a Multi-Cylinder VCR-HCCI Engine

SAE Technical Paper Series, 2003
<div class="htmlview paragraph">The operating range in terms of speed and load for a natural aspirated Homogenous Charge Compression Ignition (HCCI) engine is restricted by a lack of dilution at high load and a poor combustion at low load. Today HCCI is seen as a part load concept, but the operating range for vehicle applications should at least ...
Jari Hyvönen, Göran Haraldsson, Bengt Johansson   +2 more
openaire   +1 more source

Towards HCCI Control by Ozone Seeding

SAE Technical Paper Series, 2013
<div class="section abstract"><div class="htmlview paragraph">Nowadays, the main objectives in the automobile engine field are to reduce fuel consumption and pollutant emissions. HCCI engines can be a good solution to meet pollutant emission requirements and to achieve high combustion efficiency.
Masurier, Jean-Baptiste, Foucher, Fabrice, Dayma, Guillaume, Mounaïm-Rousselle, Christine, Dagaut, Philippe   +4 more
openaire   +1 more source

Simulation of Self Ignition in HCCI and Partial HCCI Engines Using a Reduced Order Model

SAE Technical Paper Series, 2005
<div class="htmlview paragraph">In this paper, a newly developed model that can be applied for the prediction of ignition delay times and heat release in engines operating in Homogeneous Charge Compression Ignition (HCCI) mode is presented. The proprietary numerical model is based on multi-zone application of the First Law of Thermodynamics and ...
Igor Orlandini, André Kulzer, Frank Weberbauer, Martin Rauscher   +3 more
openaire   +1 more source

Two-stage ignition in HCCI combustion and HCCI control by fuels and additives

Combustion and Flame, 2003
A Rapid Compression Machine (RCM) has been used to study the effects of fuel structure and additives on the Homogeneous Charge Compression Ignition (HCCI) of pure hydrocarbon fuels and mixtures under well-determined conditions. Such information is needed for understanding ignition delays and burning rates in HCCI engines, and “knock” in spark-ignition ...
openaire   +1 more source

Operating strategies on HCCI combustion

MTZ worldwide, 2010
The gasoline self-ignition represents an alternative part load combustion strategy, which radically reduces the nitrogen-oxide emissions in combination with improved process efficiency. At the request of the Research Association for Combustion Engines (FVV) the Institute for Internal Combustion Engines and Automotive Engineering (IVK) of the University
Goran Babic, Michael Bargende
openaire   +1 more source

Method of ion current detection for HCCI combustion on SI/HCCI dual mode engine

2009 IEEE Intelligent Vehicles Symposium, 2009
With the advantages of high thermal efficiency and extra low NOx and soot emissions, homogeneous charge compression ignition (HCCI) combustion has become a promising combustion method. Comparing with the SI engine or diesel engine, it is hardly to control combustion phase and combustion period on a HCCI engine directly.
null Guangyu Dong, null Zhijun Wu, null Liguang Li, null Fafa Liu, null Yingnan Guo   +4 more
openaire   +1 more source