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DI DIESEL ENGINE BECOMES NOISIER AT ACCELERATION - THE TRANSIENT NOISE CHARACTERISTIC OF DIESEL ENGINE -
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English
Abstract
An acceleration mode in measuring vehicle pass-by noise was simulated on an engine test bed in an anechoic room. The accelerated running noise of various types of diesel engines was measured and compared with the steady running noise. The measurement results show that naturally aspirated DI engines become noisier at acceleration, while IDI engines change only slightly. In turbocharged DI engines, the response lag of the turbo charger causes an especially big noise level difference immediately after acceleration start. This paper deals also with the mechanisms of higher level of accelerated running noise in DI engines.
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Authors
Citation
Watanabe, Y., Fujisaki, H., and Tsuda, T., "DI DIESEL ENGINE BECOMES NOISIER AT ACCELERATION - THE TRANSIENT NOISE CHARACTERISTIC OF DIESEL ENGINE -," SAE Technical Paper 790269, 1979, https://doi.org/10.4271/790269.Also In
References
- Hayashi Y. “A Series of Light Duty Indirect Injection Diesel Engines.” SAE Paper 760212 SAE Automotive Engineering Congress & Exposition Detroit February 1976
- Hawksley G. J. Anderton D. “Studies into Combustion and Noise in Turbocharged Engines.” I Mech E C72/78 Conference on Turbocharging and Turbochargers London April 1978
- Murayama T. Kojima N. “Studies on the Combustion Noise in Diesel Engine - 1st Report, Separation of Combustion Noise from Engine Noise.” Bulletin of the JSME 18 118 1975
- Murayama T. Kojima N. Satomi Y. “A Simulation of Diesel Engine Combustion Noise.” SAE Paper 760552 SAE Fuels and Lubricants Meeting St. Louis, Missouri June 1976
- Wolfer H. H. “Ignition Lag in the Diesel Engine.” 1938