The mixture formation characteristics in a temporally split injection diesel spray were studied through a series of measurements based on the laser absorption-scattering technique (LAS), which was developed by the authors and adopted the second harmonic (532nm) and the fourth harmonic (266 nm) of a pulsed Nd:YAG laser as the incident light, and dimethylnaphthalene (DMN) as the test fuel. By applying this technique, imaging was made of DMN sprays injected into a high-temperature (833 K) and high-pressure (4.0 MPa) constant-volume vessel by a single-hole nozzle and a common rail injection system for a direct injection (DI) diesel engine. Quantitative information of the vapour evaporation and fuel distribution was obtained, and furthermore the fuel-air mixture was characterized. The effect of injection temporal splitting on the mixture characteristics was analysed and correlated with the characteristics of NO(x) formation in a DI diesel engine.
Effect of injection temporal splitting on the characteristics of fuel-air mixture formation in a common rail diesel spray
Einfluß der zeitlich aufgeteilten Einspritzung auf die Brennstoff-Luft-Gemischbildung im Dieselnebel eines Einspritzmotors mit Common-Rail-Technik
2004
9 Seiten, 14 Quellen
Article (Journal)
English
Kraftstoffeinspritzung , Schadstoffemission , Stickstoffoxid , optische Absorption , bildgebendes Verfahren , Gemischbildung , Kraftstoffnebel , Kraftstoff-Luft-Gemisch , Naphthalin , experimentelle Untersuchung , Einspritzdüse , Visualisierung , Neodym-YAG-Laser , Impulslaser , Hochtemperaturverhalten , Verbrennungsverhalten , Einspritzbrennkammer , Dieseldirekteinspritzung , Common-Rail-Einspritzung
Automotive engineering | 2004
|Spray development and combustion characteristics for common rail diesel injection systems
Automotive engineering | 2003
|