Valve timing control system for internal combustion engine
US6672265B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2002 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Oct 10, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2301/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a valve timing control system, an intermediate rotator is rotated with respect to a driving plate and a lever shaft to make radial displacement of a ball engaged with a spiral slot of the intermediate rotator along a radial slot. The radial displacement is converted into relative rotation of the driving plate and the lever shaft through a link. A bottomed cylindrical guide member which is rotatably supported by a front end of the link has a base engaged with the spiral slot. The ball engaged with the spiral slot, a retainer for supporting the back of the ball, and a coil spring for biasing the ball through the retainer are accommodated in a hold hole of the guide member. Disengagement of the ball from the spiral slot is prevented by an abutment of an end face of the retainer and a bottom wall of the hold hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.