Start of funding 01.01.2019

Admission of LTT in the ECN-Network

Prof. Dr.-Ing. Michael Wensing
Friedrich-Alexander-University of Erlangen-Nuremberg
Lehrstuhl für Technische Thermodynamik

Dr. Lyle Pickett

Combustion Research Facility



In accordance with the Climate Action Plan 2050, Germany is to become predominantly greenhouse gas-neutral by 2050, and though the mobility as well. A mobility cost analyses of fully CO2-free mobility (well-to-wheel) predicts a shared market of fully electrified vehicles with a dominant combustion vehicle part using synthetic fuels from wind and solar energy*, so called e-fuels. The “Engine Combustion Network” ECN (https://ecn.sandia.gov/) is an approach to supply experimental data and a platform for discussion for CFD modelling. Due to the challenging tasks in this research a global network of pre-competitive character is needed for significant progress. The advantages are, that the ECN data is extended with spray measurements in terms of additional operation points and measuring techniques. For the LTT and the FAU a much higher visibility can be achieved in the research community. * Defossilizing the transportation sector - Options and requirements for Germany, FVV prime movers, 2018

Final report:
The LTT is now part of the “Engine Combustion Network” ECN (https://ecn.sandia.gov/). The project funding initialized a sustainable cooperation bases. The facilities at LTT were qualified for standardized measurement techniques following the ECN guidelines. The capabilities of LTT will be presented to the ECN community via the monthly web meeting on Nov. 7th. First measurements by LTT will be performed beginning 2020, once the new ECN Spray A Diesel injectors from Denso are distributed. A new technique for tomographic reconstruction of fuel sprays was developed. With this measurement the spray target stability for a wide variety of fuels could be investigated. The work was submitted to the Journal of Experiments in Fluids. The measurement accuracy will be significantly increased with a newly designed rotational injector stage at LTT. A second paper is in progress about a unique measurement of high-speed combustion analysis with laser induced fluorescence unveiling the ignition chemistry of a rich medium-duty diesel spray. The research stay has contributed significantly to a successful joint research proposal "eSpray" - funded at LTT through the Cornet program of the AiF.