发明名称 |
CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE |
摘要 |
<p>A control device for an internal combustion engine, equipped with: an exhaust purification catalyst (20) provided in the exhaust passage of the internal combustion engine and capable of absorbing oxygen; a downstream air-fuel ratio sensor (41) provided downstream from the exhaust purification catalyst in the direction of the exhaust flow; and an engine control device that controls the internal combustion engine in response to the output from the downstream air-fuel ratio sensor. The downstream air-fuel ratio sensor is configured such that the applied voltage for which the output current is zero changes in response to the exhaust air-fuel ratio, and such that when the exhaust air-fuel ratio equals the theoretical air-fuel ratio and the applied voltage in the downstream air-fuel ratio sensor is increased, the output current increases in conjunction therewith. When the air-fuel ratio of the exhaust gas is detected by the downstream air-fuel ratio sensor, the applied voltage in the downstream air-fuel ratio sensor is fixed at a constant voltage, with this constant voltage being a voltage for which the output current is zero when the exhaust air-fuel ratio is a predetermined air-fuel ratio that is leaner than the theoretical air-fuel ratio.</p> |
申请公布号 |
EP2952714(A1) |
申请公布日期 |
2015.12.09 |
申请号 |
EP20130873201 |
申请日期 |
2013.01.29 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
SASAKI, TAKANORI;HAYASHITA, GO;MIYOSHI, YUJI |
分类号 |
F02D41/14;F02D45/00;G01N27/00;G01N27/02 |
主分类号 |
F02D41/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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