초록 ▼

In a control apparatus and method for controlling an intake air quantity for an internal combustion engine, a throttle position of a throttle valve installed in an intake system of the engine is controlled in such a manner that an intake pressure around the throttle valve (pressure difference betwee

In a control apparatus and method for controlling an intake air quantity for an internal combustion engine, a throttle position of a throttle valve installed in an intake system of the engine is controlled in such a manner that an intake pressure around the throttle valve (pressure difference between upstream and downstream sides of the throttle valve or a ratio of a pressure between the upstream and downstream sides of the throttle valve) is maintained constant at an approximately predetermined negative pressure under a predetermined (low) engine load condition and a valve closure timing of at least one intake valve installed to open and close each corresponding combustion chamber of the engine is simultaneously controlled to regulate an intake air quantity supplied to the engine under the predetermined (low) engine load condition.

대표청구항 ▼

1. A control apparatus for an internal combustion engine, comprising:a throttle valve installed in an intake system of the engine; at least one intake valve installed to open and close each corresponding combustion chamber of the engine; a throttle valve controller controlling a position of the thro

1. A control apparatus for an internal combustion engine, comprising:a throttle valve installed in an intake system of the engine; at least one intake valve installed to open and close each corresponding combustion chamber of the engine; a throttle valve controller controlling a position of the throttle valve in such a manner that an intake pressure downstream of the throttle valve is maintained constant at an approximately predetermined pressure value while the engine is operating under a predetermined low engine load condition; and an intake valve controller which calculates a valve closure timing of the intake valve indicative of a target intake air quantity in accordance with an engine speed and an accelerator depression while the engine is operating under the predetermined low engine load condition.