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>Hydrogen C.I.Large bore foure stroke engine: ignition and combustion process analyzed with high speed optical measurement systems
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Hydrogen C.I.Large bore foure stroke engine: ignition and combustion process analyzed with high speed optical measurement systems
The simple reaction of hydrogen and oxygen into water as a clean method for energy conversion, the high energy density, the wide ignition ranges and the high burning velocities have been the reason for people to invstigate the usability of hydrogen as a fuel for internal combustion engines for a long time. Short overviews are given in (1, 2). In the last years, extensive research has been done with different concepts on the application of hydrogen for engine use. A summary o ver German activities is given in (3). The method of internal mixing and compression ignition combines the advantages of the high efficiency of a diesel engine and the clean combustion of hydrogen and oxygen. For this combusition method, however, one main problem has to be solved which is the auto-ignition of hydrogen. A variety of studies on this topic has shown that a eliable running C.I. engine can not be realized yet (4, 5, 6, 7). In a cooperation of MAN B& D Diesel AG and two departements of the Technische Universtat Munchen a large bore four-stroke engine running with hydrogen is being developed. The research project is supported by the Bayerische Forschungsstiftung (Bavarian Research Foundation). The Lehrstuhl fur Verbrennungskraftmaschinen (department of internal combustion engines) investigates the behavior of a single cylinder test engine. The Lehrstuhl A fur Thermodynamik (department of thermodynamics) investigates the injection and combustion process with modern optical measurement techniques in a rapid compression machine (RCM) under realistic conditions. As mentioned above, the ignition of hydrogen under internal mixing conditions is the key process for a reliable engine operation. Due to this fact it is main subject of the current research activities.
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