Evaluation of Alternative Propulsion Concepts for Mobile Machinery: A Modelling Approach using the Example on LNG-powered Port Handling Equipment

Patrick Driesch, Kai Horwat, Niko Maas, Dieter Schramm

Abstract

The prevailing climate goals and related emission limits for fleets are forcing industry to consider alternative fuels alongside established fuels such as diesel and gasoline. A conversion of a fleet of vehicles to another source of power comes along with an investment of money and a risk that the day-to-day operations of the new drive technology do not provide the expected effects regarding the fuel consumption and the exhaust gas emissions. In order to assess these barriers in advance, this paper presents an approach of a simulation tool based on a semi-physical modelling of the powertrain of mobile machinery to predict the impact of a conversion of a fleet from diesel to liquefied natural gas (LNG) in case of fuel consumption and exhaust gas emissions. For the semi-physical model, a combination of a physical model of the vehicle and powertrain dynamics and a black box modelling of the internal combustion engine by artificial neural networks is chosen. The simulation tool will be used in the future to assess the feasibility of converting the drive system from port transhipment facilities to LNG. The work was carried out as part of the research project LeanDeR financed by the European Regional Development Fund (ERDF).

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