Noise Generating Mechanism at Idling for a Four-cylinder In-line Diesel Engine 2003-01-1720
The separation of combustion noise and mechanical noise from the total noise of a four-cylinder in-line diesel engine at idling was carried out with high accuracy by changing the fuel injection timing. The mechanical noise, which accounts for the major share at 93%, was then separated into noises from the typical mechanical causes, and the valve train was found to be the major noise source. From analysis of the noise generating mechanism for the valve train, it was clarified that the noise was caused mainly by the gear rattling owing to the variation in the camshaft drive torque.
Citation: Miura, Y. and Kojima, N., "Noise Generating Mechanism at Idling for a Four-cylinder In-line Diesel Engine," SAE Technical Paper 2003-01-1720, 2003, https://doi.org/10.4271/2003-01-1720. Download Citation
Author(s):
Yasuo Miura, Naoya Kojima
Affiliated:
Hino Motors, Ltd., Yamaguchi University
Pages: 10
Event:
SAE 2003 Noise & Vibration Conference and Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 2003 Transactions Journal of Passenger Cars - Mechanical Systems-V112-6
Related Topics:
Diesel / compression ignition engines
Valve trains
Fuel injection
Noise
Combustion and combustion processes
Camshafts
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