Impact of OME-Diesel blends to a state of the art exhaust gas aftertreatment system and resulting tailpipe emissions of a multi cylinder and a single cylinder research engine

In this paper, various investigations are carried out with blends of conventional diesel fuel and the synthetic fuel oxymethylene ether (OME). OME belongs to the group of C1 oxygenates and can potentially be produced in a climate- neutral manner under certain boundary conditions. An important property is the almost soot-free combustion, which represents a great potential for emission reduction. A single cylinder research engine and a passenger car multicylinder engine are used for the presented investigations. Both engines are equipped with specific exhaust gas aftertreatment components. The aim of the investigations is to show the influence of the blending of OME on the raw emissions as well as on the efficiency of the exhaust gas after-treatment components. On the single cylinder research engine, the focus is on studying particle emissions and particle oxidation effect at stationary operating points. Whereas on the passenger car engine, low level blends are investigated in the context of stationary operating points and WLTC drives. The findings show that OME as a regenerative blend component is a promising approach to contribute to future sustainable mobility.