Method for controlling an electromagnetic actuator for activating a gas exchange valve on a reciprocating internal combustion engine
US6340008B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2001 |
| Grant date | Jan 22, 2002 |
| Priority date | — |
| Expiry date | Jan 29, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L9/20
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method for controlling an electromagnetic actuator for activating a gas exchange valve on a reciprocating internal combustion engine, said gas exchange valve having two electromagnets that are set apart from each other and between which an armature that acts on the gas exchange valve against the force of at least one return spring is guided in such a way that it can move back and forth between the pole faces of the two electromagnets. The electromagnets are alternately subjected to a receiving current by means of a control unit and the movement of the armature on its path from one pole face to the other is detected by means of a sensor unit. Actual values relating to the movement of the armature are detected by the sensor unit in a first phase (I) beginning with the start of the release of the armature from the pole face of the holding electromagnet; the receiving electromagnet is controlled by the control unit in terms of the supply of current, according to the detected actual values relating to the movement of the armature, in a second phase (II), in such a way that the armature moves at a predetermined speed and with an acceleration around zero, within…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.