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Publications (21)
This paper describes a computer simulation and measurements of the liquid phase of Diesel spray formation.
The spray is divided into small elementary volumes in which the amounts of liquid and gaseous fuel, air, mean, maximum and minimum fuel droplet diameter are calculated, as well as their number. The total air–fuel and air–fuel vapour ratios are...
Process operating conditions of modern internal combustion engines can exceed the thermodynamic critical point of an injected liquid fuel. This raises the question of whether the fuel, or at least some of its components, transition to a supercritical state, even in the presence of an ambient gas. Further investigation is required for a better under...
Differences in thermo-physical parameters of fuels have high impact on the ignition, combustion and emission. Pure rapeseed FAME and diesel fuel with a cetane number of 60 have been compared to reference fuel. In an optical accessible vessel the fuels have been injected in order to investigate the spray, the ignition and soot formation. The high ce...
Spray- and flame-wall interactions were investigated in a combustion chamber with diesel engine conditions. Several techniques were used to perform time and spatially resolved measurements of the liquid fuel phase, the premixed and diffusion-controlled combustion close to a wall. Different wall and gas temperature variations were investigated. It w...
The knowledge about fuel composition effects on the combustion behavior becomes more and more important due to strict legislative exhaust emission restrictions on the one hand and modified fuel compositions on the other hand. In diesel combustion the addition of new fuel components, such as fatty acid methyl ester and pure alkanes from the Fischer-...
The interaction between a combusting diesel spray and a wall at temperatures of 700K and 735K was investigated in a combustion chamber using optical measurement techniques. The temperatures were chosen as they appear in the range of the maximum piston surface temperatures of the latest production engines. Combustion was investigated with a dual cam...
Earlier investigations of gasoline fuels carried out, that even small fractions of high boiling components have major effect on the spray characteristic and the evaporation behaviour[1]. For diesel fuels the high boilers fraction in biodiesel fuels is increased compared to the mineral oil fuel. European law provides a blend of the bio diesel cut up...
