Patent ID: 6866012
Filing Date: 2005-03-15
Classification: F01L,F02D,F02F,Y02T

Abstract:
1. An electromagnetically driven valve control apparatus for a multi-cylinder internal combustion engine, comprising: electromagnetically driven valves, each of which is at least one of an intake valve and an exhaust valve that are provided in each of cylinders of the internal combustion engine, and each of which is driven using electromagnetic force; and a controller provided with processing units, each of which controls the electromagnetically driven valves in each of plural valve groups, each of the plural valve groups including the electromagnetically driven valves whose opening periods do not overlap with each other while the internal combustion engine is operated in a low speed low load region, wherein the electromagnetically driven valves provided in the cylinders are divided into the plural valve groups such that each of the plural valve groups includes the electromagnetically driven valves in different cylinders, whose opening periods do not overlap with each other while the internal combustion engine is operated in the low speed low load region, and wherein a control cycle of each of the processing units when the electromagnetically driven valves are operated to be opened/closed can be changed based on whether or not opening/closing operations of the plural electromagnetically driven valves in each of the valve groups overlap with each other.