Patent ID: 6244243
Filing Date: 2001-06-12
Classification: F02D,Y02T

Abstract:
A control device for controlling a direct injection engine provided with a fuel injection valve for injecting fuel directly into a combustion chamber in a cylinder thereof, a spark plug, and a throttle valve for regulating the amount of intake air introduced into the combustion chamber, comprising:a mode setter for switchingly setting a stratified charge combustion mode where the fuel is injected in a compression stroke of the cylinder to produce a stratified mixture around the spark plug and burnt in a stratified state and a uniform charge combustion mode where the fuel is injected in an intake stroke of the cylinder to produce a uniformly distributed mixture therein and burnt in a uniform state;a target load setter for setting a target load of the engine according at least to the amount of depression of an accelerator pedal;a throttle controller for controlling the opening of the throttle valve according at least to the target load set by the target load setter;a mode change predictor for predicting a switching from the stratified charge combustion mode to the uniform charge combustion mode; anda throttle control corrector for correcting a control target value for the throttle valve set by the throttle controller so that the control target value approaches a target value which will become valid in the uniform charge combustion mode prior to the switching to the uniform charge combustion mode when such combustion mode switching has been predicted by the mode change predictor.