Exhaust system of internal combustion engine
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United States of America Patent
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Jan 24, 2012
Grant Date -
Feb 12, 2009
app pub date -
Dec 7, 2006
filing date -
Dec 8, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A first control valve is disposed downstream of a junction point of a first exhaust passage, and a second catalytic converter is disposed downstream of a junction point of the second exhaust passage. The first control valve and the second control valve are controlled so that the exhaust gas of all of the cylinders mainly passes one of the first catalytic converter disposed in the first exhaust passage and the second catalytic converter disposed in the second exhaust passage during a fuel-supply cutoff period.
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