Patent ID: 7426828
Filing Date: 2008-09-23
Classification: F02B,F02D,Y02T

Abstract:
1. A method for managing the air flow rate through an internal combustion engine, comprising the steps of: i) operating an electrically controlled throttle valve ( ii) with a waste gate ( iii) using a throttle pedal to issue a command to control output of the engine, and iv) with an electronic device, gauging a priority to be given to the throttle valve or to the turbocharger so as to respond to the command issued by the throttle pedal, wherein, for an engine loading zone defined by a current engine speed being within a predetermined range of engine speeds and also the throttle pedal currently being depressed to a position short of a predetermined position, the throttle valve ( the predetermined range of engine speeds is between 1500 and 6200 rpm, the engine is defined to operate in i) a part-load zone with engine speeds ranging between 1500 and 6200 rpm, the throttle pedal position short of the predetermined position, and turbocharger in action, and ii) a full-load zone with engine speeds ranging between 1500 and 6200 rpm, the throttle pedal beyond the predetermined position, and the turbocharger being the master, in the part-load zone, the intake manifold pressure is below 1000 mbar and the heat exchange chamber pressure has values greater than 1000 mbar and ranging up to 1800 mbar, and the throttle valve maintained partially open so that a pressure difference is created between the intake manifold and the heat exchange chamber to provide the power reserve such that depressing the throttle pedal, into the wide open position, supercharges the engine without delay by the intake manifold pressure and the heat exchange chamber pressure equalizing, and in the full-load zone, the pressure in the intake manifold ranges up to 1800 mbar.