Torsional vibration isolator and method
US4617884A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 1984 |
| Grant date | Oct 21, 1986 |
| Priority date | — |
| Expiry date | Jul 27, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2178
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An apparatus and method by which possibly destructive stress of torsional vibration in a rotating crankshaft/flywheel system of a multicylinder internal combustion engine is avoided by effectively isolating the flywheel from the crankshaft for torsional vibration considerations. The flywheel and crankshaft are coupled by a resilient coupling which accommodates angular movement between the components and which has a torsional spring rate which is relatively low compared to the torsional spring rate of a conventional crankshaft/flywheel system. The coupling reduces the natural frequency of torsional vibration of the system to a frequency well below the normal operating range of the engine in terms of revolutions per minute, thereby substantially eliminating the effects of torsional vibration in the normal operating range of the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.