Patent ID: 6655345
Filing Date: 2003-12-02
Classification: F01L,F02B,F02D,F02M,Y02T

Abstract:
A valve timing controller for an internal combustion engine having a valve timing changing mechanism for changing a valve timing of at least one of an intake valve and an exhaust valve so that said engine is operated in a combustion mode switched between a uniform combustion mode in which a fuel is injected into a cylinder during an intake stroke and a stratified combustion mode in which a fuel is injected into a cylinder in a compression stroke, said valve timing controller comprising:engine rotational speed detecting means for detecting a rotational speed of said internal combustion engine; accelerator pedal opening detecting means for detecting an opening of an accelerator pedal; required torque determining means for determining a required torque outputted by said internal combustion engine based on the detected engine rotational speed and accelerator pedal opening; valve timing determining means for determining said valve timing in accordance with the determined required torque and the engine rotational speed; filling efficiency parameter detecting means for detecting a filling efficiency parameter indicative of a filling efficiency of intake air flowing into said cylinder; and valve timing correcting means for correcting said valve timing in accordance with the detected filling efficiency parameter.