Patent ID: 6612274
Filing Date: 2003-09-02
Classification: F01L,F02D,Y02T

Abstract:
A variable valve control apparatus for an internal combustion engine, for varying open-close characteristics of an intake valve and an exhaust valve, said apparatus comprising:an intake side variable valve mechanism that varies the open-close characteristic of said intake valve; an exhaust side variable valve mechanism that varies the open-close characteristic of said exhaust valve; an operating condition detector that detects operating conditions of said internal combustion engine; a control unit that receives a detection signal from said operating condition detector, and outputs control signals to said intake side variable valve mechanism and to said exhaust side variable valve mechanism, based on said detection signal, wherein said control unit determines the open-close characteristic of said intake valve based on the operating conditions of said internal combustion engine to control said intake side variable valve mechanism, and also determines the open-close characteristic of said exhaust valve according to the open-close characteristic of said intake valve to control said exhaust side variable valve mechanism.