Bibliografías temáticas / Split injection PCCI

Literatura académica sobre el tema "Split injection PCCI"

Autor: Grafiati
Publicado: 14 de marzo de 2023

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Artículos de revistas sobre el tema "Split injection PCCI"

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Fuyuto, Takayuki, Masahiro Taki, Reiko Ueda, Yoshiaki Hattori, Hiroshi Kuzuyama y Tsutomu Umehara. "Noise and Emissions Reduction by Second Injection in Diesel PCCI Combustion with Split Injection". SAE International Journal of Engines 7, n.º 4 (13 de octubre de 2014): 1900–1910. http://dx.doi.org/10.4271/2014-01-2676.

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Zehni, Alborz, Navid Balazadeh, Mojtaba Hajibabaei y Kamran Poorghasemi. "Numerical study of the effects of split injection strategy and swirl ratio for biodiesel PCCI combustion and emissions". Propulsion and Power Research 9, n.º 4 (diciembre de 2020): 355–71. http://dx.doi.org/10.1016/j.jppr.2020.11.004.

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Singh, Akhilendra Pratap y Avinash Kumar Agarwal. "Split Injection Strategies for Biodiesel-Fueled Premixed Charge Compression Ignition Combustion Engine—Part II: Particulate Studies". Journal of Energy Resources Technology 142, n.º 12 (12 de junio de 2020). http://dx.doi.org/10.1115/1.4047316.

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Abstract 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.
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Singh, Akhilendra Pratap y Avinash Kumar Agarwal. "Split Injection Strategies for Biodiesel-Fueled Premixed Charge Compression Ignition Combustion Engine—Part I: Combustion, Performance, and Emission Studies". Journal of Energy Resources Technology 142, n.º 12 (12 de junio de 2020). http://dx.doi.org/10.1115/1.4047315.

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Abstract In this study, a single-cylinder research engine was used to investigate the comparative combustion, performance, and emissions characteristics of the engine in a 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 mineral diesel. For both combustion modes, experiments were performed at constant fuel injection pressure (FIP, 700 bar), engine speed (1500 rpm), and fuel energy input (0.7 kg/h diesel equivalent). PCCI mode combustion experiments were performed at four different start of main injection (SoMI) timings using two different pilot 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). Results showed that advancing SoMI timing for both CI and PCCI combustion modes resulted in knocking; however, the DPI strategy resulted in relatively lesser knocking compared with the SPI strategy. The performance of PCCI mode combustion was relatively inferior compared with baseline CI mode combustion; however, biodiesel blends slightly improved the performance of PCCI mode combustion. Overall, this study shows that the PCCI mode combustion operating load range can be improved by using the DPI strategy.
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Martin, Jonathan y André Boehman. "Mapping the combustion modes of a dual-fuel compression ignition engine". International Journal of Engine Research, 20 de mayo de 2021, 146808742110183. http://dx.doi.org/10.1177/14680874211018376.

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Compression-ignition (CI) engines can produce higher thermal efficiency (TE) and thus lower carbon dioxide (CO2) emissions than spark-ignition (SI) engines. Unfortunately, the overall fuel economy of CI engine vehicles is limited by their emissions of nitrogen oxides (NOx) and soot, which must be mitigated with costly, resource- and energy-intensive aftertreatment. NOx and soot could also be mitigated by adding premixed gasoline to complement the conventional, non-premixed direct injection (DI) of diesel fuel in CI engines. Several such “dual-fuel” combustion modes have been introduced in recent years, but these modes are usually studied individually at discrete conditions. This paper introduces a mapping system for dual-fuel CI modes that links together several previously studied modes across a continuous two-dimensional diagram. This system includes the conventional diesel combustion (CDC) and conventional dual-fuel (CDF) modes; the well-explored advanced combustion modes of HCCI, RCCI, PCCI, and PPCI; and a previously discovered but relatively unexplored combustion mode that is herein titled “Piston-split Dual-Fuel Combustion” or PDFC. Tests show that dual-fuel CI engines can simultaneously increase TE and lower NOx and/or soot emissions at high loads through the use of Partial HCCI (PHCCI). At low loads, PHCCI is not possible, but either PDFC or RCCI can be used to further improve NOx and/or soot emissions, albeit at slightly lower TE. These results lead to a “partial dual-fuel” multi-mode strategy of PHCCI at high loads and CDC at low loads, linked together by PDFC. Drive cycle simulations show that this strategy, when tuned to balance NOx and soot reductions, can reduce engine-out CO2 emissions by about 1% while reducing NOx and soot by about 20% each with respect to CDC. This increases emissions of unburnt hydrocarbons (UHC), still in a treatable range (2.0 g/kWh) but five times as high as CDC, requiring changes in aftertreatment strategy.
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Tesis sobre el tema "Split injection PCCI"

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Bao, Zhichao. "A Study for Improving the Thermal Efficiency of Diesel Engines by Split Injection Strategy". Kyoto University, 2020. http://hdl.handle.net/2433/253388.

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MANELLI, ANDREA. "Engine Technologies for Reduction of Fuel Consumption and Pollutant Emissions in Light-Duty Diesel Engines". Doctoral thesis, Politecnico di Torino, 2022. http://hdl.handle.net/11583/2971996.

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Actas de conferencias sobre el tema "Split injection PCCI"

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Kim, Yungjin, Sangki Park y Kihyung Lee. "Investigation of the Optimal Injection Conditions for a PCCI Diesel Engine". En ASME 2012 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/icef2012-92178.

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Premixed charge compression ignition (PCCI) engines have the potential with their attractive advanced combustion process to achieve a more homogeneous mixture and a lower peak combustion temperature resulting in both lower nitrogen oxides (NOx) and diesel particulate matter (PM) emissions. In this study, the spray characteristics for a PCCI engine according to various injection conditions were introduced and then the effects of injection strategies such as injection angles, injection timings and times on combustion and emissions were studied for a single cylinder PCCI engine using early multiple injections first. Add more, a method of early-main type split injection was used for a 4-cylinder PCCI engine and the effects of injection conditions on the combustion and emission characteristics were investigated. Finally flame visualization tests were performed to validate the result obtained from the engine test. The experimental results showed that the mixture formation, indicated mean effective pressure (IMEP), and emission characteristics were dominantly affected by the injection conditions and the multiple injection method resulted in higher IMEP and still low smoke level characteristics. It appeared that more homogeneous mixture could be formed with decreasing of spray penetration and increasing of fuel evaporation rate for the early multiple injections. In case of the split injection, both injection timing and injected fuel ratio of the early and main injection largely affected engine combustion and emission characteristics. From the results, as the early injection rate increased premixed combustion was activated, on the other hand, as the main injection rate increased conventional diesel combustion was activated, therefore suitable split injection conditions could be selected for the 4-cylinder PCCI engine.
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Nishi, Mina, Hiroki Ikeda, Norimasa Iida, Hiroshi Kuzuyama, Tsutomu Umehara y Takayuki Fuyuto. "Numerical Assessment of Controlling the Interval between Two Heat-Release Peaks for Noise Reduction in Split-injection PCCI Combustion". En JSAE/SAE 2015 International Powertrains, Fuels & Lubricants Meeting. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2015. http://dx.doi.org/10.4271/2015-01-1851.

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Ikeda, Hiroki, Norimasa Iida, Hiroshi Kuzuyama, Tsutomu Umehara y Takayuki Fuyuto. "An Investigation of Controlling Two-Peak Heat Release Rate for Combustion Noise Reduction in Split-Injection PCCI Engine using Numerical Calculation". En SAE/JSAE 2014 Small Engine Technology Conference & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2014. http://dx.doi.org/10.4271/2014-32-0132.

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4

V, Pradeep y Anand Krishnasamy. "Numerical Investigations on Split Injection Strategies to Reduce CO and Soot Emissions of a Light-Duty Small-Bore Diesel Engine Operated in NADI-PCCI Mode". En WCX SAE World Congress Experience. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2022. http://dx.doi.org/10.4271/2022-01-0458.

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