Title: A theoretical comparison of the performance characteristics of diesel combustion systems with auxiliary chambers

Authors: Y. Matsui

Addresses: Engine and Powertrain Research Laboratory, Nissan Research Center, Nissan Motor Co. Ltd., 1 Natsushima-cho, Yokosuka 237, Japan

Abstract: This study focused on the relationship between the mean effective pressure loss of diesel engines and the momentum intensity of the gas jet in the throat between the main and auxiliary chambers. A theoretical comparison was made of the correlation between these two specific values in several diesel combustion systems with auxiliary chambers. The results indicated that a portion of the fuel should also be injected into the auxiliary chamber in order to improve engine performance. It was also found that, in comparison with a typical IDI diesel engine, the performance of the air cell combustion system and the turbulent combustion system is inferior in some engine speed ranges.

Keywords: air cell combustion; auxiliary combustion chambers; diesel combustion; indirect injection diesel engines; IDI engines; pressure loss; momentum intensity; gas jet; engine performance; turbulent combustion; vehicle design.

DOI: 10.1504/IJVD.1995.061955

International Journal of Vehicle Design, 1995 Vol.16 No.1, pp.42 - 53

Available online: 28 May 2014 *

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