Patent ID: 6463896
Filing Date: 2002-10-15
Classification: F01L,F02D,F02N,Y02T

Abstract:
An apparatus for controlling a position of an electromagnetically operated engine valve for an internal combustion engine, comprising:a spring to bias the engine valve at a neutral position of the engine valve between an open position and a closure position thereof; a first electromagnet to attract the engine valve toward the open position and hold the engine valve at the open position when energized; a second electromagnet to attract the engine valve toward the closure position and hold the engine valve at the closure position when energized; a condition determinator to determine whether a predetermined condition required to restart the engine in a period of time shorter than a predetermined period of time after the engine stops is established; and a controller to control a turn on-and-off of a power supply to each of the first and second electromagnets to displace the engine valve between the open and closure positions, the controller being responsive to hold the engine valve at one of the open and closure positions for the predetermined period of time after the engine stops when the condition determinator determines that the predetermined condition required to restart the engine is established.