The effect of the electrical pulse width and the fuel temperature on dynamic flow and static flow rate of a gasoline fuel injector has been numerically and experimentally investigated. In numerical analysis, the physical domain covers the region from upstream of the valve seat to the injector exit. The three-dimensional unsteady Navier-Stokes equations in a curvilinear coordinate system are solved. Due to the needle movement in fuel injection, the physical domain is considered as a function of time. In the experimental study, the test stand consisting of a hydraulic system and an electrical system was designed to meet the requirements of Society of Automotive Engineers. The pulse width of 0.97-7.5 ms and the temperature of 20-100 Cel were used to study the pintle injector performance. Predicted dynamic flow and static flow show higher values at a temperature of 80 Cel which are consistent with the test results.
Dynamic and static flow analysis of a gasoline fuel injector
Dynamische und statische Strömungsanalyse einer Benzineinspritzung
1992
6 Seiten, 11 Bilder, 1 Tabelle, 11 Quellen
Conference paper
English
Strömungsvorgang , statische Methode , dynamische Methode , Benzin , Pulsbreitenmodulation , Strömungsgeschwindigkeit , numerisches Verfahren , experimentelle Untersuchung , Ventilsitz , Navier-Stokes-Gleichung , Hydraulik , Koordinatensystem , Kraftstoffeinspritzung , Elektrizität , Betriebstemperatur , Temperaturabhängigkeit , Nadelventil , Automobilindustrie
Dynamic and Static Flow Analysis of a Gasoline Fuel Injector
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