Cam phase change mechanism
US5253622A · kind A · utility
21Cited by
10References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1993 |
| Grant date | Oct 19, 1993 |
| Priority date | — |
| Expiry date | Feb 17, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L13/0057
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A mechanism for controlling the duration of the opening of the intake valve of an internal combustion engine which includes a split cam having a first lobe which is fixed to a primary cam shaft that is drivingly connected to the engine's crankshaft and a second lobe which is freely mounted to the primary cam shaft and which is driven by gears of an auxiliary cam shaft which is axially shiftable, or a segment thereof shiftable, to rotate the second cam lobe relative to the first lobe of the split cam to thereby change the angular relationship between the first and second lobes to advance or retard the closing of the intake valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.