Device for locking rotation of an eccentric bearing of a compression ratio changing device
US4830517A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1988 |
| Grant date | May 16, 1989 |
| Priority date | — |
| Expiry date | Jun 1, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2360/22
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A device for locking rotation of an eccentric bearing used in a compression ratio changing device for an internal combustion engine where rotation of the eccentric bearing interposed between a connecting rod and a piston-pin changes the compression ratio. The device includes at least two groups of lock-pins, lock-pin holes formed in the connecting rod and lock holes formed in the eccentric bearing. The eccentric bearing is always locked in rotation relative to the connecting rod except when the compression ratio is exchanged. The locking of the rotation of the eccentric bearing suppresses slap noises of the piston and abrasion of the sliding surfaces of the device and improves durability of the compression ratio changing device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.