Internal combustion engine having a variable valve mechanism and control method therefor
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United States of America Patent
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Mar 4, 2003
Grant Date -
N/A
app pub date -
Nov 24, 2000
filing date -
Dec 24, 1999
priority date (Note) -
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Abstract
An internal combustion engine having a variable valve mechanism is capable of altering opening and closing timings and opening amounts of at least one of an intake valve and an exhaust valve of the internal combustion engine. A fuel injection valve supplies fuel either directly or indirectly to a combustion chamber of the internal combustion engine. A forcible valve closing mechanism controls the variable valve mechanism such that at least one of the intake valve and the exhaust valve is placed in a closed state when the fuel injection valve is prohibited from operating. New gas is prevented from flowing from the exhaust system of the internal combustion engine to the intake system thereof when fuel injection control is prohibited.
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