Mani Sarathy

Blending Octane Number of Ethanol in HCCI, SI and CI Combustion Modes

The authors would like to thank Clean Combustion Research Lab for providing the engine experiment facilities. The published paper was supported by competitive research funding from King Abdullah University of Science and Technology (KAUST) and funds from Saudi Aramco under the FUELCOM program.

Primary Reference Fuels (PRFs) as Surrogates for Low Sensitivity Gasoline Fuels

The authors wish to thank Adrian Ichim for performing the engine experiments. This work was supported by KAUST and the Saudi Aramco FUELCOM program.

Auto-Ignition of Iso-Stoichiometric Blends of Gasoline-Ethanol-Methanol (GEM) in SI, HCCI and CI Combustion Modes

The authors would like to thank the Clean Combustion Research Lab for providing the engine experiment facilities. The published paper was supported by competitive research funding from King Abdullah University of Science and Technology (KAUST) and funds from Saudi Aramco under the FUELCOM program. The author also wishes to thank Mohamd Almansour and Ahmad Radhwan at the Saudi Aramco Research & Development Center for preparing and analyzing the test fuels. I would also like to thanks Kate McClintock for correcting the English Language.

Fuel Spray Combustion of Waste Cooking Oil and Palm Oil Biodiesel: Direct Photography and Detailed Chemical Kinetics

Ignition processes in engines is characterized by physical processes i.e. atomization and vaporization and chemical processes i.e. influence of cetane, oxygen content, and fuel molecular structure. Due to its future prospects in reducing emissions, it is crucial to investigate the physical and chemical ignition processes of biodiesel fuel whose physical and chemical properties are different from the conventional diesel fuel.

Modelling Ignition Processes of Palm Oil Biodiesel and Diesel Fuels Using a Two Stage Lagrangian Approach

The ignition characteristics of palm oil biodiesel and conventional diesel fuels are simulated using the two stage Lagrangian (TSL) 0-D modeling technique. For the diesel fuel surrogate, thermochemical and reaction kinetic data of n-heptane detailed mechanism was utilized. For the palm biodiesel, simulations were done using the reduced mechanisms for the palm oil biodiesel using mixture of methyl decanoate, methyl decenoate and n-heptane as surrogates. Validations of the simulated data were performed against experimental results. The simulation results were able to reproduce the experimental trends in the ignition delay. The chemical kinetic processes responsible for controlling ignition were investigated using the TSL model.

Blending Behavior of Ethanol with PRF 84 and FACE A Gasoline in HCCI Combustion Mmode

The authors would like to thank Clean Combustion Research Lab for providing the engine experiment facilities. The published paper was supported by funding from King Abdullah University of Science and Technology (KAUST).

Numerical Simulations of High Reactivity Gasoline Fuel Sprays under Vaporizing and Reactive Conditions

This work was sponsored by the Saudi Aramco under the FUELCOM II program and by King Abdullah University of Science and Technology. The computational simulations utilized the clusters at KAUST Supercomputing Laboratory and IT Research Computing. The author thanks Convergent Science Inc. for providing CONVERGE license.

Autoignition of isooctane beyond RON and MON conditions

The present study experimentally examines the low temperature autoignition area of isooctane within the in-cylinder pressure – incylinder temperature map. Experiments were run with the help of a CFR engine. The boundaries of this engine were extended so that experiments could be performed outside the domain delimited by RON and MON traces. Since HCCI combustion is governed by kinetics, the rotation speed for all the experiments was set at 600 rpm to allow time for low temperature heat release (LTHR). All the other parameters (intake pressure, intake temperature, compression ratio and equivalence ratio), were scanned, such as the occurrence of isooctane combustion. The principal results showed that LTHR for isooctane occurs effortlessly under high intake pressure (1.3 bar) and low intake temperature (25 °C). Increasing the intake temperature leads to the loss of the LTHR, and therefore to a smaller domain on the pressuretemperature trace. In such a case, the LTHR domain is restricted from 20 to 50 bar in pressure and from 600 to 850 K in temperature. By slightly decreasing the intake pressure, the LTHR domain remains unchanged, but the LTHR tends to disappear, and finally, at 1.0 bar, the LTHR domain ceases to exist. When the equivalence ratio is moved from 0.3 to 0.4, the LTHR domain is delimited in the same range of pressure and temperature, but the start of combustion occurs slightly earlier for the same pressure-temperature trace. Similar conclusions were drawn regarding the variation of both intake pressure and temperature, except that few LTHR points were observed under 1.0 bar intake.

Blending Octane Number of Toluene with Gasoline-like and PRF Fuels in HCCI Combustion Mode

The experimental facilities were provided by the Clean Combustion Research Center and the author is quite thankful for the support. The paper was published with the funding from King Abdullah University of Science and Technology (KAUST) and Saudi Aramco.

Auto-Ignition and Spray Characteristics of n -Heptane and iso -Octane Fuels in Ignition Quality Tester

The authors acknowledge funding support from the King Abdullah University of Science and Technology and from Saudi Aramco under the FUELCOM program. We thank convergent science for providing their code to perform the simulations.