Following its DNA of leading research and technological innovation, FPT Motorenforschung in Arbon, Switzerland, is developing an innovation project into the use DME, an alternative fuel in an 11-liter heavy duty engine.

DME (Dimethyl-ether, CH3-O-CH3) is a suitable fuel for compression ignition engines and can be produced from several renewable sources. Its chemical properties allow for, with the correct engine hardware configuration and calibration, very low NOx and particle emissions, whilst maintaining high engine efficiency. There are, however, some challenges in the use of DME as a fuel, particularly in terms of the fuel injection equipment.

DME has been industrially used for decades, mainly as a propellant in aerosol cans as it is nontoxic, odourless and can be absorbed in the troposphere. From a storage and refuelling point of view DME is like LPG. It is liquid at very moderate pressure levels.

The overall goal of the project is to advance the understanding of using DME as an alternative to Diesel in the industrial goods sector and demonstrate clean combustion at comparable efficiency levels. Since DME combustion produces practically no particle emissions, a comparably simple SCR system, without the need for a particle filter may be enough to comply with strict emission standards.

The project is funded by SFOE (Swiss federal office for energy) and the test bench is operated at Empa Dübendorf, where the Company has invested heavily in the infrastructure adaptations necessary for DME.

The first experimental data are showing some very promising results in terms of CO2 reduction, along with very low NOx and particle emissions, together with similar engine efficiency to Diesel.

For FPT Industrial, the project contributes to the innovation activities of its Research and Development center in Arbon, Switzerland. One of its seven global R&D locations, this is the Brand’s excellence hub for advanced technologies, where both Common Rail technology and the HI-eSCR (High Efficiency Selective Catalytic Reduction system) were developed.