This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Engine Noise Reduction by Using an Underplate
Technical Paper
891343
Annotation ability available
Sector:
Language:
English
Abstract
The skirt part of cylinder block is identified as the major noise source of an engine by vibration and acoustic intensity level measurement results.
In order to reduce the engine noise the underplate which was installed under oil pan rail to increase the stiffness of the skirt part was analyzed by Finite Element Analysis (FEA) and designed accordingly. The modal model of the cylinder block was obtained using Experimental Modal Analysis (EMA) method. The modal models of both substructure were assembled into a single modal model and it was used to determine the dynamic characteristics using a system analysis software.
Finally the underplate of optimal design was machined to a prototype which was later subjected under the validation test. Sound pressure level of the engine with the underplate at operation condition was reduced.
Recommended Content
Authors
Citation
Lee, S., Oh, J., and Choi, C., "Engine Noise Reduction by Using an Underplate," SAE Technical Paper 891343, 1989.Also In
References
- HIHDETT R.H. JHONSON R.V. PULLEN H.L. LALOR N. The practical reduction of bare engine from a conventional diesel engine IME C137/79
- HORITA SUGERU TERAMOTO TAKUFUMI FUJITA KENJI DEGUCHI HIROAKI Engine noise reduction by newly-developed cylinder block stiffener JOURNAL OF THE SOCIETY OF AUTOMOTOTIVE ENGINEERS OF JAPAN 40 12 1986
- HATAMURA KOUICHI YAMADA TOSHIO Cylinder block design for low noise JOURNAL OF THE SOCIETY OF AUTOMOTOTIVE ENGINEERS OF JAPAN 34 12 1980 ENGIHEERS OF JAPAN 34 12 1980
- AFFENZELLER J. THIEN G.E. Dynamic structure modelling for low noise engine design IME C109/82
- JHONSON R.W. A computer-aided engineering approach to the reduction of light duty diesel engine IME C123/82
- CROKER M.D. Digital processing revitalies old techniques SAE 810694
- CROCKER H.J. The use of existing and advanced intensity techniques to identify noise sources on a diesel engine SAE 810694
- CROCKER H.J. ZOCKEL H. McGAY M. REINHART T. Noise source identification under steady and accelerations conditions on a turbocharged diesel engine SAE 800275
- CHALLEN B. J. CROKER H.D. A review of recent progress in diesel engine noise reduction SAE 820517
- OCHIAI K. YOTOTA K. Light-weight, quiet automotive D.I Diesel engine oriented design method SAE 82034
- PRIEDE T. In search of origins of engine noise - an historical review SAE 800534
- KLAHS JOSEPH GOLDSTE HARK MADABUSI INRISHI RUSSEL RICHARD Assembling large scale system model from analysis using interactive computing IMAC 82 46