发明名称 |
EXHAUST GAS CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE AND METHOD FOR CONTROLLING THE SAME |
摘要 |
An exhaust gas control system for an internal combustion engine includes a turbocharger that includes a compressor arranged in an intake passage, and a turbine arranged in an exhaust passage; a low-pressure EGR unit that recirculates a portion of exhaust gas back to the internal combustion engine through a low-pressure EGR passage that provides communication between the exhaust passage, at a portion downstream of the turbine, and the intake passage, at a portion upstream of the compressor; a low-pressure EGR valve that is provided in the low-pressure EGR passage, and that changes the flow passage area of the low-pressure EGR passage; and a valve control unit that executes an opening/closing control over the low-pressure EGR valve. When it is determined that the internal combustion engine is under a predetermined low-temperature environment, the low-pressure EGR valve is kept closed while the internal combustion engine is in the fuel-supply cutoff operation mode. |
申请公布号 |
WO2008090445(A2) |
申请公布日期 |
2008.07.31 |
申请号 |
WO2008IB00143 |
申请日期 |
2008.01.23 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA;ONISHI, TOMOMI;MATSUNAGA, AKIO;NAKAYAMA, SHIGEKI |
发明人 |
ONISHI, TOMOMI;MATSUNAGA, AKIO;NAKAYAMA, SHIGEKI |
分类号 |
F02D41/00;F02D41/12;F02M25/07 |
主分类号 |
F02D41/00 |
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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