基金The presented single-cylinder hydrogen engine study forms part of an international research project(FVV project No.1446)performed by the Institute of Automotive Engineering(IFS)at University of Stuttgart under the direction of Prof.AndréCasal Kulzer and by the Automotive Powertrain Technologies Group of Dr.Patrik Soltic at Swiss Federal Laboratories for Materials Science and Technology(EMPA)financially supported by Swiss Federal Office of Energy(SI/502205-01)FVV e.V.(funding No.6014462)。