Torsional assisted multi-position cam indexer having controls located in rotor
US6883481B2 · kind B2 · utility
20Cited by
15References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2003 |
| Grant date | Apr 26, 2005 |
| Priority date | — |
| Expiry date | Feb 15, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2001/34426
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An infinitely variable cam indexer utilizes engine oil pressure to actuate a cam and preferably uses an inlet check valve in the oil source to minimize back flow during a torque reversal. The control system is in the center of the rotor and uses an electromechanical actuator, preferably a variable force solenoid, acting directly on the spool to control oil flow. This design reduces leakage and improves the response of the phaser. There are shorter oil passages as compared to a control system mounted at the cam bearing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.