초록 ▼

A bypass control valve is controlled by an engine control module as a function of manifold absolute pressure and temperature within an air intake manifold in conjunction with the barometric pressure. An air per cylinder (APC) magnitude is calculated dynamically and compared to a desired APC value wh

A bypass control valve is controlled by an engine control module as a function of manifold absolute pressure and temperature within an air intake manifold in conjunction with the barometric pressure. An air per cylinder (APC) magnitude is calculated dynamically and compared to a desired APC value which is selected as a function of engine operating parameters. The air per cylinder value is calculated as a function of the manifold absolute pressure, the cylinder swept volume, the volumetric efficiency, the ideal gas constant, and the air inlet temperature. The volumetric efficiency is selected from stored data as a function of engine speed and a ratio of manifold absolute pressure to barometric pressure.

대표청구항 ▼

1. A method for controlling a supercharger, comprising the steps of:disposing said supercharger in fluid communication within an air stream flowing to a combustion chamber of a cylinder of an engine; selecting a desired magnitude of air to be provided to said combustion chamber of said engine; measu

1. A method for controlling a supercharger, comprising the steps of:disposing said supercharger in fluid communication within an air stream flowing to a combustion chamber of a cylinder of an engine; selecting a desired magnitude of air to be provided to said combustion chamber of said engine; measuring an actual pressure of air provided to said cylinder; measuring an actual temperature of air provided to said cylinder; providing a throttle valve disposed upstream of said supercharger and said combustion chamber for controlling the amount of air flowing to an inlet of said supercharger; providing a bypass conduit connecting said inlet of said supercharger to an outlet of said supercharger; providing a bypass valve within said bypass conduit to control the flow of air from said outlet of said supercharger to said inlet of said supercharger through said bypass conduit; calculating an actual magnitude of air provided to said combustion chamber as a function of said actual temperature and said actual pressure; determining a difference between said actual magnitude of air and said desired magnitude of air; and controlling the position of said bypass valve as a function of said difference between said actual magnitude of air and said desired magnitude of air.