29. Aachener Kolloquium Fahrzeug- und Motorentechnik 2020
Neues Prüfverfahren der Vorentflammungsneigung von aktuellen und künftigen Kraftstoffen
Autoren
Dipl.-Ing. Nikola Bobicic, Assoc. Prof. Peter Hofmann, Univ. Prof. Bernhard Geringer, Institute for Powertrains and Automotive Technology, Vienna University of Technology, Vienna, Austria
Zusammenfassung
Pre-ignition is a limiting factor in increasing of performance in turbocharged gasoline engines, with a high potential for damage. The fuel has a significant influence on the pre-ignition tendency of the engine. The established characteristic numbers (RON and MON) can only represent the resistance to knocking well, the pre-ignition behavior is not satisfactorily reproduced. Therefore, there are efforts in the automotive industry to define a test method in order to establish a test method with the least possible expenditure of time and fuel. In the project presented here, a test engine and a test methodology were developed. This was verified with a broad fuel matrix and some mechanisms of action could be shown. It turned out that it is not possible to predict the tendency to pre-ignite by chemical analysis of the fuel.
Mitglieder des Österreichischen Vereins für Kraftfahrzeugtechnik haben Zugriff auf alle Vorträge der Internationalen Wiener Motorensymposien.