The combustion of hydrogen is almost pollutant-free and completely climate-neutral when using regeneratively produced hydrogen. In the mobility sector, it is therefore the equivalent of electromobility when using electricity generated from renewable sources. As a chemical energy carrier, hydrogen has the advantage of being easy to store, easy to transport and thus to decouple production and use. The overarching research objective of the "Sustainable hydrogen combustion concepts" innovation laboratory is to implement hydrogen combustion with innovative measures that are so low in pollutants that it is completely equivalent to other hydrogen utilization paths from an ecological point of view.
In the "Low-emission and efficient hydrogen engines" sub-project, the Institute of Internal Combustion Engines is contributing to the implementation of sustainable hydrogen combustion concepts. An efficient combustion process is being developed on a single-cylinder commercial vehicle research engine. In addition, simulations are being carried out with regard to combustion anomalies and the design of a suitable turbocharging group to provide the required boost pressure. The motivation is to show that the combustion of hydrogen is a possibility that meets the required performance with simultaneous raw emissions in the range of the detection limit.
Niedersächsische Ministerium für Wissenschaft und Kultur (MWK)
Universities/Institutes:
Institut für Turbomaschinen und Fluiddynamik (LUH)
Institut für Technische Verbrennung (LUH)
Physikalisch-Technische Bundesanstalt
Jade Hochschule Wilhelmshaven
Inst. für Kraftwerkstechnik und Wärmeübertragung (LUH)
Institut für Energieverfahrenstechnik und Brennstofftechnik (TU Clausthal)
Industry:
IAV GmbH Gifhorn
EEW Energy from Waste GmbH Helmstedt
Enercity AG Hannover
Fr. Fassmer GmbH & Co. KG Berne
Papier- u. Kartonfabrik Varel GmbH & Co. KG
Uniper Kraftwerke GmbH Wilhelmshaven
By using a high dilution concept (by means of strong leaning, water addition, EGR), the NOx emissions are to be reduced so significantly that emission limits can already be met within the engine without complex and cost-intensive exhaust gas aftertreatment.
The limits of ignition capability are also determined on the highly variable test engine using a fully variable valve train (VVT), water injection and cooled high-pressure EGR. This also includes the experimental and simulative investigation of combustion anomalies.
The aim is to increase specific output while keeping NOx emissions low by implementing an innovative supercharging concept. By pooling their expertise, the research alliance can implement the numerical development of such a charging system in the best possible way. This results in synergies from previous research projects, which are also already being worked on in cooperation between ivb and TFD (ATL for lean concepts and exhaust gas pulsation and turbocharger interaction).