Engine valve actuation control system
US5873335A · kind A · utility
30Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 9, 1998 |
| Grant date | Feb 23, 1999 |
| Priority date | — |
| Expiry date | Jan 9, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2001/0478
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
There is shown an electric motor control of the engine valves of an internal combustion engine. A brushless torque actuator controls the rotation of a cam member which provides the appropriate lift to the engine valve to move the valve from the closed to the open position. The electronic control which is connected to the actuator includes a look-up table for controlling the timing of the engine in accordance with the operation of the internal combustion engine. The electronic control operates to return the cam member to its home position closing the engine valves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.