Experimental studies on the combustion and particulate matter emission characteristics of biodiesel surrogate component/diesel

Zhang, Yahui; Tao, Wei; Li, Zilong; Lü, Xingcai

doi:10.1016/j.applthermaleng.2017.12.045

Cited by 10 publications

(3 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because the number of NM particles and the mass of AM particles account for large proportions in diesel particulate emissions, the total number of particles decrease at first and then increases with the increased IOC, while the total mass of particles decreases continuously. It is generally believed that the NM particles are mainly formed due to condensation of some saturated HC components during the cooling and dilution process of the exhaust gas, 36 while the AM particles are formed by aggregated porous carbonaceous particles that have large specific surface areas that can absorb unburned hydrocarbons in the cylinder. 37 As the IOC increases, the lean oxygen area will be reduced, so that the formation of graphitized carbon particles at a high temperature can be avoided.…”

Section: Resultsmentioning

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

Section: Resultsmentioning

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

show abstract

“…. 48 Where n is the total number of particles, d i is the diameter of the corresponding particles. It can be seen from Figure 9 that the addition of the alcohol fuel significantly reduces the total mass of particulate matter emissions while greatly reducing the particle size of the particles.…”

Section: Resultsmentioning

confidence: 99%

A comparative study on alcohol-diesel blended fuels in a common rail diesel engine: Combined effects of carbon numbers, oxygen content, and molecular structure

Zhang

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part A:

Self Cite

View full text Add to dashboard Cite

Abundant alcohols, including ethanol, propanol, butanol, and pentanol, are expected to be used in compression ignition engines to ease the shortages of fossil fuel. The various alcohols have quite a different combustion and emission characteristics in the engine due to the changes in molecular structures. In this paper, a series of experiments were conducted on a modified common-rail diesel engine fueled with diesel/alcohols blended fuels in a wide operating range. The effects of alcohol chain length, oxygen content, and molecular structure on engine combustion and emission characteristics are studied systematically. The experimental results show that the blending of alcohols increases the peak values of in-cylinder pressure and maximum pressure rising rate. Besides, the combustion duration and ignition delay are mainly affected by oxygen content and isomer structure. The addition of short-chain alcohols will significantly reduce the total mass of particulate matter (PM) emissions, while the CO and HC emissions increase appropriately. The CO, HC, aldehydes, and ethylene emissions are mainly affected by carbon chain length and isomer structure. For PM emissions, the carbon chain length, molecular structure, and oxygen content of alcohol fuels have different influences on PM number, PM mass, and particle size distributions. The shorter carbon chain of alcohol leads to smaller particle size, and higher oxygen content leads to lower total particle mass.

show abstract

“…The author believes in the compatibility of biodiesels in maritime sector, and proposed several strategies to make this happen: establishing marine grade biodiesel specifications, enhancing the economic reliability of biodiesels by tax cuts or exemption and financial subsidy for the feedstock or the production of biodiesel, and improving low-temperature by altering the fatty acids contents in biodiesel blends and using proportions of petroleum derived fuel oil, and or additives or antifreeze agents. Harveer et al [8] tested the effect the dependence of engine performances on the concentration of Sal Methyl Ester (SME) in its blend with conventional Diesel fuel. An increase of specific fuel consumption was recorded under an increase of volumetric concentration of SME from 13.6 MJ/kWh at 10% SME to 14.8 MJ/kWh at 40% SME, while 13.9 MJ/kWh was realised for pure Diesel fuel.…”

Section: Introductionmentioning

confidence: 99%

Biodiesel vs. Diesel Oil in a Marine Engine: A Thermodynamic Study

Djermouni

Ouadha

2020

MATEC Web Conf.

View full text Add to dashboard Cite

The present comparative study deals primarily with the thermodynamic performances of the traditional fuel being used in shipping propulsion, Diesel oil and one of its alternatives, namely, the biodiesel. A thermodynamic model was developed based on the first and second law of thermodynamics. It was found that the engine running on biodiesel registers a slight improvement of its performances compared with the one running on Diesel oil in all the departments considered in this study.

show abstract

Experimental studies on the combustion and particulate matter emission characteristics of biodiesel surrogate component/diesel

Cited by 10 publications

References 44 publications

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

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

A comparative study on alcohol-diesel blended fuels in a common rail diesel engine: Combined effects of carbon numbers, oxygen content, and molecular structure

Biodiesel vs. Diesel Oil in a Marine Engine: A Thermodynamic Study

Contact Info

Product

Resources

About