The trend in development of mobility systems is very much influenced by the need of reducing CO2 emission. For this reason it is important to increase power density and efficiency of vehicles powertrain by improving single powertrain components as well as developing completely new powertrain concepts. Shiftable clutches are influencing the dynamic behaviour as well as the energy efficiency of the powertrain due to complex interaction within the system. Power density is very much influenced by the tribological contact of clutch systems which is very important concerning fulfilling systems functionality. Within this paper a method to determine the oil flow through lubricated clutch systems is presented. Investigations carried out show that depending on the groove design oil distribution varies dramatically. It has been shown that heat transfer is more influenced by filling of the grooves than by oil velocity. The increased groove area allows increased heat transfer as shown within experimental investigations. Therefore advanced ceramics show potential to increase heat transfer and improve power density of lubricated clutch systems due to high strength and the resulting possibility of groove design.
Advanced ceramics as friction material in lubricated clutch systems
Hochleistungskeramiken als Reibwerkstoff für geschmierte Kupplungssysteme
Tribology International ; 59 ; 267-275
2013
9 Seiten, 18 Bilder, 7 Quellen
Aufsatz (Zeitschrift)
Englisch
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