Engine cover with internal vibration damping plates
US6834741B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 24, 2003 |
| Grant date | Dec 28, 2004 |
| Priority date | — |
| Expiry date | Jun 30, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02F7/008
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A cover assembly for an engine includes at least one relatively large mounting wall portion potentially subject to induced vibrations that transmit undesirable noise or sound to the exterior of the engine. To reduce the vibration and resulting noise, a pair of vibration damping plates is attached to the interior of the mounting wall portion and urged against the wall portion. The damping plates may be made from untreated steel when mounted in a lubricating oil atmosphere which serves to protect the plates against oxidation. The plates have different thicknesses selected to provide differing vibration frequency responses that act to create damping between the plates and the associated cover wall portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.