Valve timing controller for use with internal combustion engine
US5381764A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 1994 |
| Grant date | Jan 17, 1995 |
| Priority date | — |
| Expiry date | May 3, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2102
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An internal combustion engine is equipped with a valve timing controller capable of minimizing the electric power consumption and frictional wear of elements. The valve timing controller can vary the valve timing of valves. A camshaft is moved axially forwardly or rearwardly by electrically energizing an outer solenoid clutch or a brake releasing solenoid, respectively. An axial movement of the camshaft results in a change in valve timing. With the exception of a transient period during which the valve timing is being varied, both the brake releasing solenoid and the outer clutch are electrically deenergized to thereby reduce the electric power consumption, and both of them are maintained out of contact with a displaceable disc 13 to thereby reduce frictional wear thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.