ENGINE NOISE REDUCTION BY STRUCTURAL STUDY OF CYLINDER BLOCK

A structural study of the cylinder block was made using a 4-cylinder, 1,800 cc gasoline engine with an aim toward reducing engine noise. First, we studied the relationship between cylinder block vibration and radiated noise, and also the principal component modes of noise and vibration. From the results obtained, it become clear that engine noise could be reduced by suppressing the basic natural vibration of the cylinder block. Alternative shapes of engine blocks were examined. Trial cylinder block was built into an engine. We were able to reduct the noise of the engine proper 2.5db-A with a weight increase of about 3%.

• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Nagayama, I
  • Araki, Y
  • Kakuta, K
  • Usuba, Y
• Publication Date: 1980-2

Media Info

• Pagination: 8 p.

Subject/Index Terms

• TRT Terms: Alternatives analysis; Annealing; Engines; Noise; Noise control; Photographs; Vehicle power plants
• Old TRIS Terms: Automobile engines; Engine noise; Enlargements /photographs/
• Subject Areas: Environment; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 00315451
• Record Type: Publication
• Report/Paper Numbers: SAE 800441
• Files: TRIS
• Created Date: Aug 5 1980 12:00AM