Patent ID: 7032567
Filing Date: 2006-04-25
Classification: F02D,F02M,Y02T

Abstract:
1. A control apparatus for an internal combustion engine having a variable valve mechanism capable of changing a valve opening characteristic regarding an open state of an intake valve, and a throttle valve capable of changing a negative pressure in an intake pipe, the control apparatus comprising: a controller capable of controlling the valve opening characteristic and a degree of opening of the throttle valve, the controller being adapted to control an amount of intake air taken into the internal combustion engine through at least one of the control of the valve opening characteristic and the control of the degree of opening of the throttle valve in accordance with an output that is requested of the internal combustion engine, wherein the controller is further adapted to, during a first operation state where the amount of intake air is controlled through the control of the valve opening characteristic control, control the degree of opening of the throttle valve within a range of the degree of opening of the throttle valve that allows maintenance of an atmospheric pressure in the intake pipe under a condition that the valve opening characteristic is in a steady state at least during the first operation state, while maintaining a continuity of the degree of opening of the throttle valve during a period of switch between the first operation state and a second operation state where the amount of intake air is controlled through the control of the degree of opening of the throttle valve only.