Patent ID: 6422184
Filing Date: 2002-07-23
Classification: F02B,Y02T

Abstract:
A method for impulse charging an internal combustion engine having a charging duct whose cross section is available for flow therethrough while an inlet valve communicating the charging duct with a cylinder is in an open position and the charging duct is closeable by means of a closure element during an intake movement of a piston in the cylinder, comprising the steps of:disposing the closure element in a closed position; maintaining the closure element in its closed position during at least the initial intake movement of the piston in the cylinder during which the inlet valve is open such that an underpressure is created downstream of the closure element relative to the direction of fluid flow from the charging duct to the cylinder; and during the period of the underpressure, starting movement of the closure element from its closed position to an open position depending upon the desired one of a selection of thermodynamic parameters including charging such that the movement of the closure element from its closed position to its open position is facilitated by the underpressure and the fluid flow starting with opening of the closure element, whereby charging of the cylinder is increased.