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RESEARCH PAPERS

Studies on Combustion, Vibration, and Noise in High-Speed Diesel Engines Through Newly Developed Measuring Instruments

[+] Author and Article Information
S. Izumi

Engine Division, Mitsubishi Heavy Industries, Tokyo 100, Japan

M. Takemi

Engine Design Division, Mitsubishi Heavy Industries, Sagamihara 229, Japan

M. Ishida, Y. Yoshimura

Nagasaki University, Nagasaki 852, Japan

H. Suetsugu

Nagasaki Institute of Applied Science, Nagasaki 851-01, Japan

T. Maeda

Product Engineering Dept., Ono Sokki Co., Ltd., Tokyo 146, Japan

J. Eng. Gas Turbines Power 110(3), 377-384 (Jul 01, 1988) (8 pages) doi:10.1115/1.3240132 History: Received September 25, 1987; Online October 15, 2009

Abstract

The authors have been conducting studies on the reduction of exhaust emissions using a high-speed diesel engine. By applying composite countermeasures consisting of five items: (1) timing retard, (2) optimization of fuel injection system, (3) water-in-oil type emulsified fuel, (4) application of ignition improver, and (5) an increase in airflow quantity, an exhaust NOx level less than half of the original was attained while retaining the original low levels of fuel consumption, smoke density, and engine noise. The authors developed new measuring instruments in order to grasp the true nature of combustion, especially to clarify the delicate change in combustion. By using these instruments, the combustion phenomena were analyzed accurately, speedily, and synthetically on various aspects such as combustion mode, vibration, noise, thermal loading, heat balance, etc. The complicated combustion behavior in the cylinder has been clarified in part by simultaneous measurement of cylinder pressure at several points.

Copyright © 1988 by ASME
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