Combustion characteristics of hydrotreated vegetable oil – diesel blend under EGR and supercharged conditions

Ewphun, Pop-Paul; Chau, Vo Tan; Srichai, Prathan; Charoenphonphanich, Chinda; Sato, Susumu; Kosaka, Hidenori

doi:10.1007/s12239-017-0064-y

Cited by 15 publications

(5 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There was higher NOx due to a lower EGR ratio. Increasing oxygen concentration from decreasing EGR ratio decreases flame temperature and NOx emissions (16) . THC and CO emissions under this operating condition were not increased with increasing injection pressure under the 0.55MPa gross IMEP at 1,750 RPM condition.…”

Section: Resultsmentioning

confidence: 98%

Investigation on Effect of Offset Orifice Nozzle under Multi Pulse UltrahighPressure Injection and PPC Combustion Conditions

Ewphun

Otake

Nagasawa

et al. 2020

IJAE

Self Cite

View full text Add to dashboard Cite

The effect of nozzle orifice design on combustion characteristics under multi pulse ultra high pressure injection and PPC conditions. The objective of offset orifice nozzle is to shorten spray penetration and improve mixture formation in order to increase thermal efficiency. The offset orifice nozzle was designed by shift orifice aliment from into the sac center to edge of sac follow swirl direction. The experiments were carried out on a single cylinder engine at 0.55MPa gross IMEP at 1,750 RPM and 0.7MPa gross IMEP at 2,000 RPM. The injection pulses were 3 pulses equally mass under injection pressure up to 350MPa.

show abstract

Section: Resultsmentioning

confidence: 98%

Investigation on Effect of Offset Orifice Nozzle under Multi Pulse UltrahighPressure Injection and PPC Combustion Conditions

Ewphun

Otake

Nagasawa

et al. 2020

IJAE

Self Cite

View full text Add to dashboard Cite

show abstract

“…The results of tests performed by Sugiyama et al (2012), Singh, Subramanian, and Singal (2015), Ewphun et al (2017), Pirjola et al (2017), Bhardwaj et al (2015) revealed that the high CN and the low aromatics fraction of the HVO reduced emissions, and is capable to improve BSFC. These and other studies (Aatola et al, 2008;Erkkila et al, 2011;Imperato, Tilli, Sarjovaara, & Larmi, 2011;Lehto et al, 2011;Murtonen, Aakko-Saksa, Kuronen, Mikkonen, & Lehtoranta, 2009;Pflaum, Hofmann, Geringer, & Weissel, 2010) conducted with the CI engines fueled with HVO showed that HVO reduce NO x , soot emissions and deposit formation in the cylinder, therefore HVO has beneficial fuel for the CI engine.…”

Section: Experimental Set-up and Proceduresmentioning

confidence: 99%

Experimental Investigations of Hydrogen Effects on Performance and Emissions of Renewable Diesel Fueled Rcci / Vandenilio Įtaka Energiniams Ir Emisijos Rodikliams Alternatyviu Dyzelinu Veikiančiame Rcci Variklyje – Eksperimentinis Tyrimas

Juknelevičius

2018

Science - Future of Lithuania

View full text Add to dashboard Cite

The article presents the study of hydrogen effects on performance, combustion and emissions characteristics of renewable diesel fueled single cylinder CI engine with common rail injection system in RCCI mode. The renewable diesel fuels as the HRF are the HVO and it blend with petrol diesel further named PRO Diesel, investigated in this study. The purpose of this investigation was to examine the influence of the LRF – hydrogen addition to the HRF on combustion phases, engine performance, efficiency, and exhaust emissions. HES was changed within the range from 0 to 35%. Hydrogen injected through PFI during intake stroke to the combustion chamber, where it created homogeneous mixture with air. The HRF was directly injected into combustion chamber using electronic controlled unit. Tests were performed at both fixed and optimal injection timings at low, medium and nominal engine load. After analysis of the engine bench results, it was observed that lean hydrogen – HRF mixture does not support the ﬂame propagation and efficient combustion. While at the rich fuel mixture and with increasing hydrogen fraction, the combustion intensity concentrate at the beginning of the combustion process and shortened the ignition delay phase. Decrease of CO, CO2 and smoke opacity was observed with increase of hydrogen amounts to the engine. However, increase of the NO concentration in the engine exhaust gases was observed.

show abstract

“… 17 In order to cope with these problems arising from high EGR, some researchers have adopted the method of intake supercharging to increase the IOC and optimize the engine emissions and fuel economy comprehensively through the coordinated control of EGR and supercharging technology. 18 , 19 However, limited by the mechanical strength, the compression ratio of intake supercharging cannot be too high, and this means will consume exhaust energy. Therefore, it has been difficult to introduce a large proportion of EGR at high intake pressure conditions.…”

Section: Introductionmentioning

confidence: 99%

“…Exhaust gas recirculation (EGR) is an effective technology used to reduce NO x emissions from diesel engines. − However, a too high EGR rate will cause some changes in the combustion process, including the lower IOC, longer ignition delay, lower heat release rate, and decreased combustion completeness, which lead to a series of problems, such as the deterioration of HC, CO, and particulate emissions and the decline of engine power and fuel economy . In order to cope with these problems arising from high EGR, some researchers have adopted the method of intake supercharging to increase the IOC and optimize the engine emissions and fuel economy comprehensively through the coordinated control of EGR and supercharging technology. , However, limited by the mechanical strength, the compression ratio of intake supercharging cannot be too high, and this means will consume exhaust energy. Therefore, it has been difficult to introduce a large proportion of EGR at high intake pressure conditions …”

Section: Introductionmentioning

confidence: 99%

Effects of Intake Components and Stratification on the Particle and Gaseous Emissions of a Diesel Engine

et al. 2022

View full text Add to dashboard Cite

It is of great significance to improve the performance of diesel engines by adjusting the intake components and their distribution. In this work, various proportions of exhaust gas recirculation (EGR) gas and oxygen (O 2 ) have been introduced to the intake charge of a diesel engine and the effects of different intake components and stratification conditions on pollutant emissions, especially for particles, have been explored. The results show that the introduction of O 2 into the intake charge is beneficial to alleviate the deterioration of particles and hydrocarbon (HC) emissions caused by high EGR rates. Compared with the pure air intake condition, the introduction of moderate O 2 at high EGR rate conditions can simultaneously reduce nitrogen oxides (NO x ) and particles, when the intake oxygen content (IOC) is 0.2 and the EGR rate is 20%, the NO x and particles are reduced by 45.66% and 66.49%, respectively. It is worth noting that different intake components have a significant impact on the particle size distribution (PSD) of diesel engines. In addition, the in-cylinder O 2 concentration distribution formed by the stratified intake is advantageous for further improving the combined effect of NO x , particles and HC emissions relative to the homogeneous intake. At a condition of 0.2 IOC and 20% EGR rate, the NO x , particles, and HC emissions are about 8.8%, 14.3%, and 26% lower than that of intake components nonstratification, respectively.

show abstract

Combustion characteristics of hydrotreated vegetable oil – diesel blend under EGR and supercharged conditions

Cited by 15 publications

References 14 publications

Investigation on Effect of Offset Orifice Nozzle under Multi Pulse UltrahighPressure Injection and PPC Combustion Conditions

Investigation on Effect of Offset Orifice Nozzle under Multi Pulse UltrahighPressure Injection and PPC Combustion Conditions

Experimental Investigations of Hydrogen Effects on Performance and Emissions of Renewable Diesel Fueled Rcci / Vandenilio Įtaka Energiniams Ir Emisijos Rodikliams Alternatyviu Dyzelinu Veikiančiame Rcci Variklyje – Eksperimentinis Tyrimas

Effects of Intake Components and Stratification on the Particle and Gaseous Emissions of a Diesel Engine

Contact Info

Product

Resources

About