Fractional-Order Modeling of High-Pressure Fluid-Dynamic Flows: An Automotive Application. Issue 1 (2015)

• Record Type: Journal Article
• Authors: Lino, Paolo; Maione, Guido; Saponaro, Fabrizio
• Is Part Of: IFAC-PapersOnLine. Volume 48:Issue 1(2015)
• Page Start: 382
• Page End: 387
• Publication Date: 2015
• Subjects: Fractional-order modeling -- fractional-order partial differential equations -- diesel engines -- injection systems -- fuel injection control -- irrational operators -- automotive control; Automatic control -- Periodicals; 629.805
• DOI: 10.1016/j.ifacol.2015.05.093
• Languages: English
• ISSNs: 2405-8963

Abstract

Abstract: Performance of internal combustion engines is strictly affected by the metering of the air/fuel mixture. Achieving accuracy in metering is difficult due to the complex fluid-dynamics of the fuel injection process. However, injection control can benefit from appropriate models describing the process dynamics. To this aim, this work develops a mathematical model of the common rail diesel electro-injector. Fractional-order modeling of pressure wave propagation in the pipes is investigated with respect to the integer order modeling approach. A comparison between simulation and experimental results validates the fractional-order model, that also shows better prediction capabilities than an integer-order model. Then the proposed model is suitable for mechanical optimization of the injector and for deriving fuel rate shaping strategies.