Journal ArticleDOI
Split Injection Strategies for Biodiesel-Fueled Premixed Charge Compression Ignition Combustion Engine—Part II: Particulate Studies
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TLDR
In this paper, a single-cylinder research engine with premixed charge compression ignition (PCCI) was evaluated using two different fuel injection strategies, namely, single pilot injection and double pilot injection, at four different start of main injection (SoMI) timings, at constant fuel injection pressure (FIP), constant engine speed (1500 rpm), and constant fuel energy input (0.7 kg/h diesel equivalent).Abstract:
\n In this study, experiments were performed in a single-cylinder research engine to investigate the particulate matter (PM) characteristics of the engine operated in premixed charge compression ignition (PCCI) mode combustion vis-a-vis baseline compression ignition (CI) mode combustion using three test fuels, namely, B20 (20% v/v biodiesel blended with mineral diesel), B40 (40% v/v/ biodiesel blended with mineral diesel), and baseline mineral diesel. The experiments were carried out at constant fuel injection pressure (FIP) (700 bar), constant engine speed (1500 rpm), and constant fuel energy input (0.7 kg/h diesel equivalent). PM characteristics of PCCI mode combustion were evaluated using two different fuel injection strategies, namely, single pilot injection (SPI) (35 deg before top dead center (bTDC)) and double pilot injection (DPI) (35 deg and 45 deg bTDC) at four different start of main injection (SoMI) timings. Results showed that both PCCI mode combustion strategies emitted significantly lower PM compared to baseline CI mode combustion strategy. However, the blending of biodiesel resulted in relatively higher PM emissions from both CI and PCCI combustion modes. Chemical characterization of PM showed that PCCI mode combustion emitted relatively lower trace metals compared to baseline CI mode combustion, which reduced further for B20. For detailed investigations of particulate structure, morphological characterization was done using transmission electron microscopy (TEM), which showed that PM emitted by B20-fueled PCCI mode combustion posed potentially lower health risk compared to baseline mineral diesel-fueled CI mode combustion.read more
Citations
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Review of Diesel Emissions and Control
TL;DR: A summary of diesel emissions regulations, engine developments, and nitrogen oxide (NOx), particulate matter (PM), and hydrocarbon (HC) remedia... is provided in this article.
Journal ArticleDOI
Particulate characteristics of low-temperature combustion (PCCI and RCCI) strategies in single cylinder research engine for developing sustainable and cleaner transportation solution.
TL;DR: In this paper, the authors compared different low-temperature combustion (LTC) strategies with conventional compression ignition (CI) combustion for finding out a sustainable and cleaner transport solution, and showed that the RCCI combustion strategy emitted a relatively lower concentration of particles than the other two strategies (PCCI and CI).
Journal ArticleDOI
The effect of low reactivity fuels on the dual fuel mode compression ignition engine with exergy and soot analyses
TL;DR: In this article, the effect of fuel injection timing of diesel on the dual-fired compression ignition engine with gasoline, methanol and toluene has been investigated, and closed cycle combustion simulations have been conducted to complement the experiment results and for a better understanding of the in-cylinder dynamics.
References
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Journal ArticleDOI
Evolution, challenges and path forward for low temperature combustion engines
TL;DR: Low temperature combustion (LTC) is an advanced combustion concept for internal combustion (IC) engines, which has attracted global attention in recent years as discussed by the authors, which offers prominent benefits in terms of simultaneous reduction of both oxides of nitrogen (NO x ) and particulate matter (PM), in addition to reduction in specific fuel consumption (SFC).
Journal ArticleDOI
Review of diesel emissions and control
TL;DR: A summary of diesel emissions regulations, engine developments, and nitrogen oxide (NOx), particulate matter (PM), and hydrocarbon (HC) remedia... is provided in this paper.
Journal ArticleDOI
Emissions of Particulate Trace Elements, Metals and Organic Species from Gasoline, Diesel, and Biodiesel Passenger Vehicles and Their Relation to Oxidative Potential
Kalam Cheung,Leonidas Ntziachristos,Theodoros Tzamkiozis,James J. Schauer,Zissis Samaras,Katharine Moore,Constantinos Sioutas +6 more
TL;DR: In this paper, three light-duty passenger vehicles were tested in five configurations in a chassis dynamometer study to determine the chemical and oxidative potential of the particulate exhaust emissions of the vehicles.
Carcinogenic effects of metals.
TL;DR: The article is concerned with metallic compounds that are carcinogenic regardless of their surface properties, and it does not discuss ''smooth surface'' or ''solid state'' carcinogenesis, as exemplified respectively by the carcinogenicities of mercury droplets or silver foil.
Journal ArticleDOI
Effect of split fuel injection and EGR on NOx and PM emission reduction in a low temperature combustion (LTC) mode diesel engine
TL;DR: In this paper, an advanced combustion concept called premixed charge compression ignition (PCCI) has been explored for application in diesel engines and the effects of various split injection strategies and exhaust gas recirculation (EGR) on PCCI combustion were investigated.