Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2006/043397
Kind Code:
A1
Abstract:
A control device for an internal combustion engine, capable achieving both excellent driveability and reduction in impact force at the time when a movable section comes into contact with a restriction section. A control device (1) has a variable valve lift mechanism (50) and a variable suction-air-amount mechanism (11). The variable valve lift mechanism (50) has a restriction section (67a) that changes a valve lift (Liftin) and restricts the valve lift (Liftin) so that the valve lift (Liftin) does not exceed a limit lift (Liftin&lowbar L) when a movable section (65) is in contact with the restriction section. The variable suction-air-amount mechanism (11) changes the amount of suction air. The control device (1) calculates (step 54) a control input (Uliftin), which is for controlling the variable valve lift mechanism (50), by predetermined algorithm including disturbance suppression parameter (POLE&lowbar lf), the control input being calculated so that the valve lift (Liftin) follows a target valve lift (Liftin&lowbar cmd). When it is determined that the movable section (65) is in contact with the restriction section (67a), the control device (1) sets (step 73) the disturbance suppression parameter (POLE&lowbar lf) so that the degree of suppression, by the disturbance suppression parameter, of influence of disturbance is less than the degree of suppression before the determination.

Inventors:
SHIMOJO KANAKO (JP)
YASUI YUJI (JP)
Application Number:
PCT/JP2005/017767
Publication Date:
April 27, 2006
Filing Date:
September 27, 2005
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
HONDA MOTOR CO LTD (JP)
SHIMOJO KANAKO (JP)
YASUI YUJI (JP)
International Classes:
F02D13/02; F01L13/00; F02D9/02; F02D41/04; F02D43/00
Foreign References:
JP2003254100A2003-09-10
JP2001303994A2001-10-31
JP2004162663A2004-06-10
JP2002161767A2002-06-07
JPH09282006A1997-10-31
Other References:
See also references of EP 1813793A4
Attorney, Agent or Firm:
Takahashi, Tomoo (11-5 Shiba 4-chom, Minato-ku Tokyo, JP)
Download PDF: