NAMOSYN – Sustainable Mobility via Synthetic Fuels
- 01.04.2019 to 31.03.2022
- Organizational Unit:
- Combustion Fundamentals
- German Federal Ministry of Education and Research
The goal of the project lies in the development and testing of synthetic fuels for gasoline and diesel engines, which promise a sustainable production and usage. Hence, the emitted CO2 from the combustion must be previously sequestered from other sources, such that overall considerably less greenhouse gases are emitted during the lifecycle of the fuel. This is the main motivation of developing synthetic fuels (SynFuels). Another advantage benefit are is the advantageous combustion properties behaviour of some of these molecules, which allow to also reduce local emission of nitrogen oxides and particulates. Within NAMOSYN, cost- and energy-efficient production processes for SynFuels are developed and the fuels are tested in engines. They have to be usable in conventional engines, so as to allow for allowing a fast market introduction and applicability in current vehicles without significant engine modifications.
Project goals and methods
Dimethyl carbonate (DMC) and methyl formate (MeFo) are liquid oxygenated organic compounds with high anti-knock properties and low tendency to form particles during combustion. Therefore, they offer potential advantages for use as fuels in spark-ignition engines, and suitable physical properties (e.g. cold temperature stability, vapor pressure, and boiling curve) can be set by blending them with each other or with other fuels (gasoline, methanol, ethanol etc.). DMC and MeFo can in principle be produced as e-fuels, so that their use is compatible with concepts of sustainability and climate protection (greenhouse gas avoidance). Fundamental investigations make a decisive contribution to the development of future technologies by enabling the development of tailor-made simulation tools. For this purpose, ignition delay time measurements of DMC/MeFo/gasoline-mixtures are performed in shock tube (ST) and rapid compression machine (RCM) in order to evaluate the influence of the addition of DMC and MeFo on the ignition and combustion of gasoline. Based on these experiments, a combined DMC/MeFo/gasoline model is developed and validated in order to describe the oxidation behavior of synthetic fuels and their blends with conventional gasoline. Furthermore, the newly developed kinetic models is applied in combustion process development and used for development of 0D/1D simulation models as well as for CFD-simulations.