Abstract
E-Fuels are gaining in importance in the development of internal combustion engines. Their properties can differ from currently used fuels and affect the combustion behaviour. Here, the influence of the potential e-Fuel dimethylcarbonate (DMC) on the combustion process is investigated with the focus on combustion chamber deposit (CCD) formation. The effect of DMC on the CCD formation was observed. A one-cylinder research engine was equipped with changeable samples to investigate the deposit with a confocal microscope in addition to an in-situ measurement. The deposits on the top of the piston were compared to the deposits on the cylinder head. Furthermore, the dependency of the emissions on the DMC content in the fuel was characterized. The emphasis is on the gaseous emissions HC, NOx and CO2 and the emitted particle number. For a detailed analysis, an optical access was used to capture images of the combustion process.
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