Title:
可変動弁機構の制御装置
Document Type and Number:
Japanese Patent JP4880556
Kind Code:
B2
Abstract:
An apparatus for and method of controlling a variable valve mechanism capable of continuously varying an effective opening of an intake valve by driving of an actuator, and also, is provided with a default mechanism which mechanically holds the intake valve at a default opening set to be larger than a minimum effective opening when the driving of the actuator is stopped, while the intake valve is being held at the default opening by the default mechanism, the effective opening of the intake valve is detected, the default opening is detected based on the detected effective opening to thereby learning the default opening, so that a direction of supply of a driving force by the actuator is switched between an increase-direction causing an increase in the effective opening and a decrease-direction causing a decrease therein, from the detected or learned default opening.
Inventors:
Kenichi Machida
Application Number:
JP2007251259A
Publication Date:
February 22, 2012
Filing Date:
September 27, 2007
Export Citation:
Assignee:
Hitachi Automotive Systems, Ltd.
International Classes:
F02D13/02; F01L13/00; F02D9/02; F02D41/04; F02D45/00
Domestic Patent References:
| JP9268906A | ||||
| JP2006291840A | ||||
| JP2007056850A | ||||
| JP2004183513A | ||||
| JP2005299578A | ||||
| JP2005023874A | ||||
| JP2006144722A | ||||
| JP2004076621A | ||||
| JP2005061286A | ||||
| JP2006266200A |
Attorney, Agent or Firm:
Tomijio Sasashima