Reduction of combustion noise and structural improvement of its transmission path in diesel engine design Online publication date: Sun, 25-May-2014
by Y. Watanabe
International Journal of Vehicle Design (IJVD), Vol. 2, No. 3, 1981
Abstract: In order to provide a quieter diesel engine as an essential component of low-noise trucks. A two-year investigation of combustion noise and engine structural analysis was carried out. Influences of various variables related to combustion noise were observed on a Vee type two-cylinder engine, and the variables which seemed to be effective for noise control were confirmed on a multi-cylinder engine. Structural analysis was advanced by using improved measuring techniques such as applications of laser holography, transfer function and F.F.T. Furthermore, the adoption of accelerated running simulation on an eddy-current dynamometer made noise evaluation possible in an engine operating condition that was dose to the actual vehicular situation. The target figure of engine noise reduction, 2 to 4 dB(A), could be almost achieved by cylinder block structural modification and turbo-charging or by increasing the compression ratio for N.A. engines. Engine noise control techniques so far found effective and their problems are also discussed at the end of the paper.
Online publication date: Sun, 25-May-2014
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Vehicle Design (IJVD):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email email@example.com