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Abstract

A model experiment is presented as a bridge case between fundamental research and studies on practical combustion systems. The evolution of one diesel spray in high-temperature (900 K), high-pressure (4 MPa), nearly quiescent (cross flow velocity of 1 m/s), oxidative (air) environment is characterised for two injection conditions that are of interest in light duty diesel engines (1.6 and 6 mg/stroke/hole). Laser light scattering and emission imaging have been used for this purpose together with chemical analysis of material sampled with a fast sampling valve, at 35 mm from the nozzle. The structures of the combustion processes for the two injection conditions show similar features. The comparison of the diesel combustion structure presented in this paper with those reported in the literature, relative to injections of much higher fuel quantity, suggests that both experimental conditions define prototypic classes of diesel-like processes, which should be considered as reference models in the analysis of apparatus dependent combustion processes in real diesel engines.

Additional information

Authors: RAGUCCI R, CNR, Istituto di Ricerche sulla Combustione (IT);CIAJOLO A, CNR, Istituto di Ricerche sulla Combustione (IT);D'ANNA A, CNR, Istituto di Ricerche sulla Combustione (IT);CAVALIERE A, Università di Napoli, Dipartimento di Ingegneria Chimica (IT);D'ALESSIO A, Università di Napoli, Dipartimento di Ingegneria Chimica (IT)
Bibliographic Reference: Paper presented: 24th International Symposium on Combustion, Sydney (AU), July 5-10, 1992
Availability: Available from (1) as Paper EN 36916 ORA
Record Number: 199210835 / Last updated on: 1994-12-02
Category: PUBLICATION
Original language: en
Available languages: en