Title:
CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2014/118894
Kind Code:
A1
Abstract:
This control device for an internal combustion engine is equipped with: an air/fuel ratio sensor; and an engine control device that controls the internal combustion engine according to the output of the air/fuel ratio sensor. The air/fuel ratio sensor is configured so that the applied voltage at which the output current reaches zero varies according to the exhaust air/fuel ratio, and the output current increases if the applied voltage is increased at the air/fuel ratio sensor when the exhaust air/fuel ratio is the stoichiometric air/fuel ratio. When the air/fuel ratio of exhaust gas is to be detected by the air/fuel ratio sensor, the applied voltage at the air/fuel ratio sensor is fixed at a constant voltage, said constant voltage being different to the voltage at which the output current reaches zero when the exhaust air/fuel ratio is the stoichiometric air/fuel ratio, and being the voltage at which the output current reaches zero when the exhaust air/fuel ratio is different to the stoichiometric air/fuel ratio. Thus provided is a control device for an internal combustion engine that uses an air/fuel ratio sensor capable of detecting an absolute value for the air/fuel ratio of exhaust gas even if the air/fuel ratio of the exhaust gas is not the stoichiometric air/fuel ratio.
More Like This:
| JP4548098 | Automatic conforming device |
| JP4770378 | Internal combustion engine for vehicles |
| JP2009156218 | INTAKE SYSTEM MALFUNCTION DETECTING DEVICE |
Inventors:
HAYASHITA GO (JP)
AOKI KEIICHIRO (JP)
AOKI KEIICHIRO (JP)
Application Number:
PCT/JP2013/051914
Publication Date:
August 07, 2014
Filing Date:
January 29, 2013
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
HAYASHITA GO (JP)
AOKI KEIICHIRO (JP)
HAYASHITA GO (JP)
AOKI KEIICHIRO (JP)
International Classes:
F02D45/00; G01N27/41
Foreign References:
| JP2003329637A | 2003-11-19 | |||
| JPH10160704A | 1998-06-19 | |||
| JP2000356618A | 2000-12-26 | |||
| JP2004316553A | 2004-11-11 | |||
| JP2004316553A | 2004-11-11 | |||
| JP2005351096A | 2005-12-22 | |||
| JP2003329637A | 2003-11-19 | |||
| JPH08232723A | 1996-09-10 | |||
| JP2009162139A | 2009-07-23 | |||
| JP2001234787A | 2001-08-31 | |||
| JP2000356618A | 2000-12-26 |
Other References:
See also references of EP 2952720A4
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
Aoki 篤 (JP)
Aoki 篤 (JP)
Download PDF: