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23 results on '"Saisirirat, Peerawat"'

2. A study of the impacts of fuel aromatic content and biodiesel fraction on PM emission reduction in light duty diesel vehicles.

Author

Saisirirat, Peerawat, Niyomna, Phumanan, Henpraserttae, Suparoek, Ewphun, Pop-Paul, Silva, Kampanart, Yoosuk, Boonyawan, and Chollacoop, Nuwong

Subjects
*BIODIESEL fuels, *GREENHOUSE gas mitigation, *SOOT, *SOOT analysis, *POLYCYCLIC aromatic hydrocarbons, *EMISSION standards, *VEGETABLE oils
Abstract

The impacts of fuel aromatic content, Polycyclic Aromatic Hydrocarbon (PAH) content and biofuel fractions were experimentally explored in this study. The blended fuels with various aromatic and PAH contents were tested as well as two biofuels, biodiesel and Hydrotreated Vegetable Oil (HVO), in comparison to commercial Euro5 fuels. All of these fuels were tested in two Light-Duty Vehicles (LDVs), one Euro4- and another Euro5-with certified emission standards, in the order to represent two vehicle generations. The Euro5 vehicle represents a new generation of vehicles while the Euro4 vehicle represents a large portion of the on-road vehicles in Thailand. The vehicle tailpipe emissions were analyzed for both test vehicles, according to the ECE-R83 Rev.4 (Euro5) method with a NEDC driving cycle. The instance emission analyses of soot concentration and PM size distribution were also applied real-time throughout the driving pattern to highlight the conditions of peak PM emissions. The results show that overall emissions quantities can be reduced in Euro5 vehicles, except the NOX emissions, while the differences between various test fuels were not clearly distinguishable. As the test cycle begin, the soot concentration increased over a short period, but declined to a similar level throughout the test cycle. On the contrary for Euro4 vehicle, the soot concentration and total PM number are in direct-proportion to both fuel aromatic and PAH contents. Furthermore, it is found that the biodiesel fraction can reduce PM emissions for all mass analysis, PM numbers and PM sizes. The results in this study support the policy direction to increase automotive emission standards while simultaneous promoting the use of biodiesel in higher proportions. [ABSTRACT FROM AUTHOR]

Published
2024
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6. The impact of a metallic partial-flow particulate filter on diesel engine combustion and emission characteristics using palm oil biodiesel blends.

Author

Thin, MyatHsu, Liu, Hai, Thaeviriyakul, Poonnut, Wai, Phyo, Oh, Ban-Seok, Nuthong, Chaiwat, Charoenphonphanich, Chinda, Saisirirat, Peerawat, Srimanosaowapak, Sompong, Po-ngaen, Watcharin, Kosaka, Hidenori, and Karin, Preechar

Subjects
DIESEL motors, DIESEL motor combustion, DIESEL motor exhaust gas, DIESEL particulate filters, HEAT release rates, THERMAL efficiency, GRANULAR flow
Abstract

Reducing particulate emissions from diesel engines pose a significant challenge in developing countries due to increasingly stringent regulations for both new and older vehicles. While employing wall-flow filters have proven effective for new vehicles, older vehicles necessitate alternative approaches to particulate filtration without complex modifications. Partial flow filters exhibit advantages in such scenarios, characterized by their lack of external components, simplified design, minimal maintenance demands, and resilience to misfuelling. The present study mainly focuses on the evaluation of a partial flow diesel particulate filter (P-DPF) installed on a diesel direct injection compression ignition engine, operating on commercial biodiesel blends, specifically B10 and B20. According to the combustion analyses, the combustion pressure, temperature, and the heat release rate increased with the kinetic energy inside the residual gas molecules due to installation of the P-DPF system. This also resulted in higher indicated power as well as indicated thermal efficiency. However, brake-specific fuel consumption and brake-specific energy consumption, exhibited only a marginal increase, while brake thermal efficiency experienced a slight decrease of 0.65% in the case of B10 and 0.74% for B20 after the installation of the P-DPF system due to the friction loss by the filter backpressure. Furthermore, an incremental increase in exhaust backpressure was observed, ranging from 0.2 kPa at 1000 rpm and 56 Nm to 2.25 kPa at 2000 rpm and 140 Nm. An analysis of emissions limits showed a notable 65% reduction in soot emissions. Comparative analyses were conducted to assess the impact of P-DPF installation on a diesel engine without any manual changes. Ultimately, the partial flow filter (P-DPF) emerges as an effective initial measure in mitigating particulate matter emissions, particularly when employed in a retrofit exhaust after-treatment system. [ABSTRACT FROM AUTHOR]

Published
2024
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15. A Study of n-Heptane/Ethanol HCCI Combustion Characteristics by Experiment and Detailed Chemical Kinetics Simulation

Author

Saisirirat, Peerawat, Foucher, Fabrice, Mounaïm-Rousselle, Christine, Chanchaona, Somchai, Foucher, Fabrice, Laboratoire Pluridisciplinaire de Recherche en Ingénierie des Systèmes, Mécanique et Energétique (PRISME), Université d'Orléans (UO)-Ecole Nationale Supérieure d'Ingénieurs de Bourges (ENSI Bourges), Combustion and Engines Research Laboratory (CERL), and KMUTT

Subjects
[SPI.FLUID]Engineering Sciences [physics]/Reactive fluid environment, [SPI.FLUID] Engineering Sciences [physics]/Reactive fluid environment, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2009

16. Effects of Ethanol, n-butanol- n-heptane Blended on LTHR and HRR Phasing in Diesel-HCCI

Author

Saisirirat, Peerawat, Foucher, Fabrice, Chanchaona, Somchai, Mounaïm-Rousselle, Christine, Laboratoire Pluridisciplinaire de Recherche en Ingénierie des Systèmes, Mécanique et Energétique (PRISME), Université d'Orléans (UO)-Ecole Nationale Supérieure d'Ingénieurs de Bourges (ENSI Bourges), Combustion and Engines Research Laboratory (CERL), and KMUTT

Subjects
[SPI.FLUID]Engineering Sciences [physics]/Reactive fluid environment, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2009
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17. The Effects of Ethanol Blended Fraction with N-heptane on the Low Temperature Heat Release (LTHR) of Homogeneous Charge Compression Ignition Combustion

Author

Saisirirat, Peerawat, Foucher, Fabrice, Mounaïm-Rousselle, Christine, Chanchaona, Somchai, Foucher, Fabrice, Laboratoire Pluridisciplinaire de Recherche en Ingénierie des Systèmes, Mécanique et Energétique (PRISME), Université d'Orléans (UO)-Ecole Nationale Supérieure d'Ingénieurs de Bourges (ENSI Bourges), Combustion and Engines Research Laboratory (CERL), and KMUTT

Subjects
[SPI.FLUID]Engineering Sciences [physics]/Reactive fluid environment, [SPI.FLUID] Engineering Sciences [physics]/Reactive fluid environment, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2009

18. A Study of HCCI Combustion for Hydrocarbon-Ethanol Mixture: an Explanation of the Homogeneous Charge Spontaneous Combustion

Author

Saisirirat, Peerawat, Dubreuil, Anthony, Foucher, Fabrice, Chanchaona, Somchai, Mounaïm-Rousselle, Christine, Laboratoire Pluridisciplinaire de Recherche en Ingénierie des Systèmes, Mécanique et Energétique (PRISME), Université d'Orléans (UO)-Ecole Nationale Supérieure d'Ingénieurs de Bourges (ENSI Bourges), Combustion and Engines Research Laboratory (CERL), KMUTT, and Foucher, Fabrice

Subjects
[SPI.FLUID]Engineering Sciences [physics]/Reactive fluid environment, [SPI.FLUID] Engineering Sciences [physics]/Reactive fluid environment, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2007

19. Effect of Laboratory-Simulated EGR on HCCI n-Heptane/Ethanol Blend Fuels Combustion Characteristics

Author

Dubreuil, Anthony, Saisirirat, Peerawat, Foucher, Fabrice, Chanchaona, Somchai, Mounaïm-Rousselle, Christine, Laboratoire pluridisciplinaire de recherche en ingénierie des systèmes, mécanique et énergétique (PRISME), Université d'Orléans (UO)-Institut National des Sciences Appliquées - Centre Val de Loire (INSA CVL), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Combustion and Engines Research Laboratory (CERL), KMUTT, and Foucher, Fabrice

Subjects
[SPI.FLUID]Engineering Sciences [physics]/Reactive fluid environment, [SPI.FLUID] Engineering Sciences [physics]/Reactive fluid environment, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2007

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