Patent ID: 8150597
Filing Date: 2012-04-03
Classification: F02D,Y02T

Abstract:
1. A method of controlling an internal combustion engine having a cylinder accommodating a piston which reciprocates therein, and defining a combustion chamber, an air intake passage through which air is inducted into said cylinder, and an intake valve capable of shutting off air flowing into said cylinder from said air intake passage, the method comprising: closing the intake valve in a manner such that a timing of the closing of the air intake valve is retarded beyond a timing at which an amount of air inducted into the cylinder would be maximized, and the timing of the closing of the air intake valve is advanced as a desired amount of air to be inducted into the cylinder increases while the engine speed is at a predetermined engine speed; and closing the intake valve in a manner such that a timing of the closing of the air intake valve is advanced as the engine speed increases, when the desired amount of air to be inducted into the cylinder is at a maximum.