Results 21 to 30 of about 121,913 (303)

Interactions of Ethanol with Friction Modifiers in Model Engine Lubricants

open access: yesLubricants, 2019
When employed as an engine fuel, ethanol can accumulate in the lubricant during use. Previous work has shown that ethanol contamination affects friction and elastohydrodynamic lubrication (EHL) film formation, and also the growth and stability of anti ...
Henara L. Costa, Hugh Spikes
doaj   +1 more source

Numerical Study on the Effect of Fuel Rich n-Heptane on In-Cylinder Fuel Reforming Characteristics in an HCCI Engine

open access: yesInternational Journal of Chemical Engineering, 2021
The effect of in-cylinder fuel reforming on an n-heptane homogenous charge compression ignition engine has been studied. A dedicated cylinder without a complex control system is proposed for fuel enrichment reforming, which can provide part of the power ...
Weijian Zhou   +4 more
doaj   +1 more source

EFFECT OF FUEL ADULTERATION ON ENGINE CRANKCASE DILUTION

open access: yesJournal of Mechanical Engineering, 2011
Excessive crankcase dilution of lubricating oil in petrol driven vehicles across Dhaka city have been reported recently. A field survey revealed that, gradual increase in the volume of lubricating oil was experienced irrespective of vehicle model, vehicle age and brand of lubricating oil used.
Hasan Saadi   +2 more
openaire   +2 more sources

A Quantitative and Qualitative Analysis of the Lubricity of Used Lubricating Oil Diluted with Diesel Oil

open access: yesApplied Sciences
Experience shows that dilution of lubricating oil with diesel oil is unfavorable to the engine, causing issues including deterioration of engine performance, shortening of oil life, and reduction in engine reliability and safety.
Leszek Chybowski   +3 more
doaj   +1 more source

Modeling of Selected Parameters of Used Lubricating Oil Diluted with Diesel Oil Using the Characteristics of Fresh Lubricating Oil

open access: yesEnergies
This article presents the verification of the hypothesis on using certain approximation curves in the evaluation of used lubricating oil. These curves are plotted for fresh lubricating oil to approximate the parameters of lubricating oil diluted with ...
Leszek Chybowski   +3 more
doaj   +1 more source

Challenges in charge preparation and combustion in homogeneous charge compression ignition engines with biodiesel: A review

open access: yesEnergy Reports, 2019
Homogeneous charge compression ignition (HCCI) engines have high efficiency and lower NOx-soot emissions than diesel and gasoline engines. However, these engines suffer from high HC, CO and unregulated emissions and combustion phasing control.
V.D. Chaudhari, D. Deshmukh
doaj   +1 more source

Investigation of Dilution Effect on CH4/Air Premixed Turbulent Flame Using OH and CH2O Planar Laser-Induced Fluorescence

open access: yesEnergies, 2020
Diluting the combustion mixtures is one of the advanced approaches to reduce the NOx emission of methane/air premixed turbulent flame, especially with high diluents to create a distributed reaction zone and mild combustion, which can lower the ...
Li Yang   +5 more
doaj   +1 more source

Large Eddy Simulation of CO 2 diluted oxy-fuel spray flames

open access: yesFuel, 2017
We report results of a computational study of oxy-fuel spray jet flames. An experimental database on flames of ethanol burning in a coflow of a O 2–CO 2 mixture, created at CORIA (Rouen, France), is used for model validation (Cléon et al., 2015). Depending on the coflow composition and velocity the flames in these experiments start at nozzle (type A ...
Ma, L. (author)   +2 more
openaire   +4 more sources

Continental-scale enrichment of atmospheric 14CO2 from the nuclear power industry: potential impact on the estimation of fossil fuel-derived CO2 [PDF]

open access: yesAtmospheric Chemistry and Physics, 2011
The 14C-free fossil carbon added to atmospheric CO2 by combustion dilutes the atmospheric 14C/C ratio (Δ14C), potentially providing a means to verify fossil CO2 emissions calculated using economic inventories.
N. Gruber, H. D. Graven
doaj   +1 more source

Research on Isotope Dilution Gamma Spectroscopy for Determining Plutonium Concentration

open access: yesYuanzineng kexue jishu, 2023
Preliminary validation of isotope dilution gamma spectroscopy (IDGS) for plutonium concentration measurement was investigated in this study. A high 239Pu abundance plutonium solution was used as an isotope dilution agent.
WANG Yan;LIU Hongbin;HE Lixia;XU Xiaoming
doaj   +1 more source

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