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Title:
CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2012/042610
Kind Code:
A1
Abstract:
A control device of an internal combustion engine of the present invention is a control device which is capable of improving the implementation accuracy of requested torque while improving emission performance by positively changing an air-fuel ratio. The control device generates a target air-fuel ratio by relaxing the change rate of a requested air-fuel ratio to the internal combustion engine. In such a situation that the requested air-fuel ratio is made rich with recovery from fuel cut, however, relaxation of the change rate of the requested air-fuel ratio is stopped, and the requested air-fuel ratio is output as the target air-fuel ratio with no change. The control device calculates a target air volume for achieving the requested torque under the target air-fuel ratio. In the calculation of the target air volume, data in which the relationship between torque generated by the internal combustion engine and air volume sucked into a cylinder is defined in relation to the air-fuel ratio can be used. The control device operates an actuator for air volume control according to the target air volume, and operates an actuator for control of the amount of fuel consumption according to the target air-fuel ratio.

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Inventors:
YOSHIZAKI SATOSHI (JP)
OKAZAKI SHUNTARO (JP)
SHIBAYAMA MASASHI (JP)
SHOKATSU KAORU (JP)
KAWAKAMI HAJIME (JP)
Application Number:
PCT/JP2010/066935
Publication Date:
April 05, 2012
Filing Date:
September 29, 2010
Export Citation:
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Assignee:
TOYOTA MOTOR CO LTD (JP)
YOSHIZAKI SATOSHI (JP)
OKAZAKI SHUNTARO (JP)
SHIBAYAMA MASASHI (JP)
SHOKATSU KAORU (JP)
KAWAKAMI HAJIME (JP)
International Classes:
F02D41/12
Foreign References:
JP2003328809A2003-11-19
JPH11343906A1999-12-14
JP2009167841A2009-07-30
Attorney, Agent or Firm:
TAKAHASHI, Hideki et al. (JP)
Hideki Takahashi (JP)
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