| 摘要 |
A valve control arrangement for opening and closing the valves in, for example, an internal combustion engine comprises an electrically powered magnetic valve drive (9-14). A sensor (17) is provided for monitoring actual valve position. In addition means are provided for monitoring the operating conditions of the engine or the like in which the valve is fitted and for generating a desired valve position based upon the those operating conditions. The desired valve position and the actual valve position are compared and the valve drive (9-14) is controlled such that the actual valve position follows or approximates to the desired valve position. |
