Density ρ(p0,T)/kg·m−3, viscosity η(p0,T)/Pas, heat capacity cp(p0,T)/Jkg-1K-1 and speed of sound u(p0,T)/m·s-1 of 1-octyl-3-methylimidazolium tetrafluoroborate [OMIM][BF4] over a wide range of temperatures at T = (278.15 to 413.15) K and ambient pressure p=0.101 MPa are reported with an estimated experimental relative combined average ρ/ρ = ±(0.01 to 0.08) % percent deviation (APD) in density, cp/cp= 1 % in constant pressure specific heat capacity, / = ±0.35 % in dynamic viscosity and standard Δu= ± 0.1 m·s-1 deviation in speed of sound values. Measurements were carried out using the Anton Paar DMA 5000M, DSA 5000M, DMA HPM vibration tube densimeters, SVM 3000 Stabinger Viscometer and Perkin Elmer Pyris 1 DSC Differential Scanning Calorimeter

The density ρ(0p s , , or T x ) of 1-butanol and Diesel B0 fuel blends at ambient and saturated pressures and temperatures at T = (253.15 to 468.15) K were measured using an Anton Paar DSA 5000M, DMA 4500, DMA HPM and SVM 3000 vibration tube densimeters of Anton Paar company with an estimated average ρ/ρ = ±0.03 % deviation. The reason of using various densimeters were discussed. The obtained values were fitted to the following polynomial equation. The excess molar volumes E V m /cm3·mol-1 of 1-butanol and Diesel fuel blends were calculated.

The constant pressure specific heat capacity ( , , ) 0 or c p T x p s /Jkg-1K-1 of 1-butanol and Diesel fuel blends at temperatures T = (253.15 to 468.15) K are reported with an estimated average cp/cp = ±0.5% deviation. Measurements were carried out using a Perkin Elmer’s Pyris 1 differential scanning calorimetry (DSC). The excess heat capacity ( , , ) 0 or c p T x s Ep/Jkg-1 K -1 of 1-butanol and Diesel fuel blends were calculated. Polynomial equation as a function of temperature was used for the fitting of measured data,

Abstract (p,ρ,T) data of two different Diesel fuel samples (Hallen DK B0) over a wide range of temperatures and pressures p up to 200 Pa [Hallen DK B0 from 2015 year (B0 2015) over a wide range of temperatures at T = (263.15 to 468.48) K and from 2016 year (B0 2016) at T = (263.15 to 468.40) K] are reported. The experimental measurements of Diesel fuel properties at high pressures and wide range of temperatures is of increasing interest in engine fuel injection. The measurements were carried out with an Anton Paar DMA HPM vibration tube densimeter. An equation of state (EOS) for fitting of the (p,ρ,T) data of Diesel fuels has been developed as a function of pressure and temperature. After a thorough analysis of literature values and validity of the constructed equation of state, various thermophysical properties such as isothermal compressibility, isobaric thermal expansibility, differences in isobaric and isochoric heat capacities, thermal pressure coefficient, internal pressure at temperatures [T = (263.15 to 468.48) K] and pressures p up to 200 Pa were calculated. The vapor pressure measurements of Diesel fuels were measured using the two high-accuracy static experimental set ups. Additionally, heat capacity, viscosity and speed of sound of diesel fuels at ambient pressure p = 0.1 MPa and various temperature intervals were measured using an accuracy installations. Other thermophysical properties, like specific heat capacities at constant pressure cp(p,T) and volume cv(p,T), speed of sound u(p,T) and isentropic expansibility κs(p,T) at temperatures T = (263.15 to 468.48) K and pressures p up to 200 MPa have been evaluated.

The vapour pressure of 1-butanol and Diesel B0 binary fuel blends were investigated at temperatures ranging from 274.15 to 468.67 K, using the two different setups with static method. The measured values were fitted to the Antoine, polynomial and Clausius–Clapeyron type equations. The heat of eva poration of mixture have been determined from the vapour–liquid equilibria data.

Presented here are the thermophysical characterization and thermodynamic modelling of RAVENOL Calibration Fluid 2.5 which is used for the calibration and preservation of diesel engine fuel injectors. Accurate knowledge of the standardized fluid properties is an important component for engineering modelling to deliver the correct dose of fuel into the combustion chamber of diesel engines while reducing the occurrence of cavitation phenomena. The liquid density and specific isobaric heat capacity measurements were carried out up to T=423K at ambient pressure. The speed of sound moving through the liquid was measured from T=(300 to 423) K from ambient pressure up to p=200MPa. This plays a crucial role in fuel injection timing. With the combination of these data with high pressure, it is possible to accurately calculate the liquid density, specific isobaric heat capacity, coefficient of isobaric thermal expansion and isothermal compressibility at elevated pressures. Thedata obtained at ambient pressure were used to confirm the accuracy of the high-pressure experimental data by comparing them with the predictions of the Fluctuation-Theory Equation-of-State. The calibration fluid hasbecome the second ISO 4113 fluid to be characterized in this fashion.