触媒温度制御装置

Japanese Patent JP5316651

B2

The present invention has an object to provide a catalyst temperature control device that can properly control a temperature of a catalyst which influences an emission performance of an internal combustion engine. A plurality of temperature measurement points are disposed continuously or dispersedly at least in a flow path direction inside the catalyst. The temperature measurement points can include not only actual measurement points where temperature sensors are disposed, but also virtual measurement points where temperature sensors are not disposed. A control point is selected from the plurality of temperature measurement points in accordance with operation conditions of the internal combustion engine, and a target value of the temperature of the catalyst is set. As a temperature at the selected control point, when the control point is the actual measurement point, an actual measurement value by the temperature sensor can be used. When the control point is the virtual measurement point, the temperature at the control point can be estimated by interpolation calculation using a temperature or temperatures at one or a plurality of actual measurement points near the control point. A manipulated variable of the internal combustion engine is determined based on a difference between the temperature at the control point acquired by actual measurement or estimation and the target value, and the internal combustion engine is operated in accordance with the determined manipulated variable.

Kota Sata

JP2011549814A

October 16, 2013

January 14, 2010

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TOYOTA JIDOSHA KABUSHIKI KAISHA

F02D45/00; F01N3/20

JP2006266220A	2006-10-05
JP2007239472A	2007-09-20
JPH05505660A	1993-08-19
JPH11324659A	1999-11-26
JP2002227638A	2002-08-14
JP2007016653A	2007-01-25

Hideki Takahashi
Mamoru Takada
Hidekazu Onishi

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