发明名称 |
Control System of Internal Combustion Engine |
摘要 |
An internal combustion engine comprises an exhaust purification catalyst 20. The control system comprises a temperature detecting means 46 for detecting or estimating a temperature of the exhaust purification catalyst, performs feedback control so that an air-fuel ratio of exhaust gas flowing into the exhaust purification catalyst becomes a target air-fuel ratio, and performs target air-fuel ratio setting control which alternately sets the target air-fuel ratio to a rich set air-fuel ratio and a lean set air-fuel ratio. In addition, the control system increases a variation difference, obtained by subtracting a rich degree of the rich set air-fuel ratio from a lean degree of a lean set air-fuel ratio, when a temperature of the exhaust purification catalyst detected or estimated by the temperature detecting means is a predetermined upper limit temperature or less compared with when it is higher than the upper limit temperature. As a result, a sulfur ingredient storage amount of an exhaust purification catalyst is maintained low. |
申请公布号 |
WO2015105013(A1) |
申请公布日期 |
2015.07.16 |
申请号 |
WO2014JP84444 |
申请日期 |
2014.12.18 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
YAMAGUCHI, YUJI;NAKAGAWA, NORIHISA;OKAZAKI, SHUNTARO;MIYOSHI, YUJI |
分类号 |
F02D41/02;F02D41/14 |
主分类号 |
F02D41/02 |
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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