Patent ID: 8554446
Filing Date: 2013-10-08
Classification: F02D,F02M,Y02T

Abstract:
1. A control apparatus for an internal combustion engine including a variable valve operating mechanism, the control apparatus comprising: a positive crankcase ventilation system which circulates blow-by gas inside the internal combustion engine back into intake air to treat the blow-by gas; a variable valve operating mechanism which is capable of stopping operation of at least one valve of an intake valve and an exhaust valve in a closed state; valve stop execution means which stops the at least one valve in the closed state when a fuel cut of the internal combustion engine is executed; HC concentration estimation means which estimates an HC concentration of gas inside an intake passage at the time of a valve return when the at least one valve returns to a operable state from a stop state; and injection amount determination means which determines a fuel injection amount at the time of the valve return based on the HC concentration estimated by the HC concentration estimation means.