Title:
CONTROL DEVICE FOR SUPERCHARGER-EQUIPPED INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2012/101737
Kind Code:
A1
Abstract:
Provided is a control device for a supercharger-equipped internal combustion engine which, when a fresh air blow-through is generated through a combustion chamber from an intake passage to an exhaust passage, is capable of simultaneously and suitably preventing superheating of a catalyst located in the exhaust passage and suppressing turbo lag. The device is equipped with a turbo supercharger (22), an exhaust bypass passage (36), a WGV (38) that can switchably open and close the exhaust bypass passage (36), and variable valve mechanisms (46, 48) that can change the valve overlap period. If a fresh air blow-through amount Gsca is larger than a predetermined blow-through judgement value Gjudge, the valve overlap period is shortened so that the blow-through amount Gsca is less than or equal to the blow-through judgement value Gjudge. After the valve overlap period has been shortened, if it is judged that the blow-through amount Gsca is still greater than the blow-through judgement value Gjudge, the WGV (38) is opened.
Inventors:
TAKAGI NOBORU (JP)
Application Number:
PCT/JP2011/051212
Publication Date:
August 02, 2012
Filing Date:
January 24, 2011
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
TAKAGI NOBORU (JP)
TAKAGI NOBORU (JP)
International Classes:
F02D13/02; F02D23/00; F02D41/04; F02D45/00
Foreign References:
| JP2008075549A | 2008-04-03 | |||
| JPH04132832A | 1992-05-07 | |||
| JP2002266686A | 2002-09-18 | |||
| JPH06173723A | 1994-06-21 | |||
| JP2009019611A | 2009-01-29 | |||
| JP2007263083A | 2007-10-11 | |||
| JP2008175201A | 2008-07-31 | |||
| JP2010163915A | 2010-07-29 | |||
| JP2008297930A | 2008-12-11 |
Other References:
See also references of EP 2669497A4
Attorney, Agent or Firm:
TAKAHASHI, Hideki et al. (JP)
Hideki Takahashi (JP)
Hideki Takahashi (JP)
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Claims: