Patent ID: 6647949
Filing Date: 2003-11-18
Classification: F02D

Abstract:
A control apparatus for an engine, wherein the engine includes an injector that directly injects fuel into a combustion chamber and a valve for controlling the flow rate of intake air to the combustion chamber, wherein the engine is operated in a fuel injection mode selected from a first injection mode, in which the injector injects fuel during the compression stroke of the engine, and a second injection mode, in which the injector injects fuel during the intake stroke of the engine, wherein the intake flow rate appropriate for the first injection mode differs from the intake flow rate appropriate for the second injection mode, the apparatus comprising a controller for controlling the injector and the valve, wherein, when one of the fuel injection modes is selected, the controller controls the valve such that the intake flow rate is appropriate for the selected fuel injection mode, and when the engine is cold, the controller determines the amount of fuel to be injected by the injector in accordance with the actual intake flow rate, and the controller controls the valve such that the intake flow rate is appropriate for the selected fuel injection mode before actually switching the fuel injection mode by a predetermined time period.