US 8,285,496 B2 · Method and device for providing air mass flow information in a supercharged internal combustion engine

Abstract

A method for providing a characteristic quantity for a state of an air system of a supercharged internal combustion engine includes: detecting a characteristic quantity measured value as characteristic quantity information with the aid of a sensor; providing a characteristic quantity model, using which a characteristic quantity model value is computed on the basis of one or more quantities different from the characteristic quantity measured value; and providing the characteristic quantity either based on the characteristic quantity measured value or on the characteristic quantity model value computed by the characteristic quantity model, as a function of a state of the air system.

Claims6

Dependent claims

A method for providing a characteristic quantity for a state of an air system of a supercharged internal combustion engine for control of said engine, comprising:

detecting, with the aid of a sensor, an air mass flow in the air system, wherein the air system has a throttle valve downstream from a compressor of a supercharger device;
computing an air mass flow measured value from the sensor detected air mass flow;
providing an air mass flow model for computing an air mass flow value of the air mass flow through the compressor on the basis of an air mass flow through the throttle valve, taking into account dynamic behavior of a volume between the compressor and the throttle valve;
and
providing air mass flow information on the basis of one of the air mass flow measured value or the air mass flow model value, as a function of a state of the air system.

2 more elements

Dependencies are inferred from the claim text.

Method and device for providing air mass flow information in a supercharged internal combustion engine

Life of this patent

Method and device for providing air mass flow information in a supercharged internal combustion engine

Life of this patent

Abstract

Claims6