Variable valve-timing apparatus in an internal combustion engine
US4494495A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 15, 1982 |
| Grant date | Jan 22, 1985 |
| Priority date | — |
| Expiry date | Oct 15, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D3/10
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An apparatus for controlling valve timing in an internal combustion engine. The apparatus includes a pair of sleeves inserted into each other. One of the sleeves is connected to a camshaft of the engine. The other sleeve is connected to a timing pulley which is connected to the crankshaft of the engine. One of the sleeves has diametrically opposite slits while the other sleeve has diametrically opposite slits located adjacent to the respective slits in the one sleeve. The adjacent slits have central lines which are skewed with respect to each other. Roller-bearing units are arranged in the slits and are mounted on an axially slidable slider. Movement of the slider causes the generation of angular displacement between the sleeves so as to obtain a variable valve timing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.