发明名称 |
EXHAUST GAS RECIRCULATION DEVICE OF INTERNAL COMBUSTION ENGINE, AND CONTROL METHOD FOR THE DEVICE |
摘要 |
An exhaust gas recirculation device of an internal combustion engine (1) including a low-pressure EGR passage (20), a high-pressure EGR passage (21), a low-pressure EGR valve (23) and a high-pressure EGR valve (24) further includes an air-fuel ratio sensor (12) that is disposed in the exhaust passage (4) upstream of the position of its connection with the low-pressure EGR passage (20). In the case where a predetermined fuel-cut condition is satisfied, an ECU (30) estimates the flow amounts of exhaust gas flowing in the low-pressure EGR passage (20) and the high-pressure EGR passage (21), on the basis of the oxygen concentrations acquired by the air-fuel ratio sensor (12) at timings at which the exhaust gases recirculated into the intake passage (3) via the low-pressure EGR passage (20) and via the high-pressure EGR passage (21) reach the air-fuel ratio sensor (12), respectively. |
申请公布号 |
EP2153045(A1) |
申请公布日期 |
2010.02.17 |
申请号 |
EP20080762793 |
申请日期 |
2008.06.06 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
NAKAYAMA, SHIGEKI;MATSUNAGA, AKIO;ONISHI, TOMOMI;IEMURA, AKIYUKI |
分类号 |
F02D21/08;F02D41/00;F02M25/07 |
主分类号 |
F02D21/08 |
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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