Patent · US Active

Method and device for monitoring a heating up of an exhaust gas catalytic converter of an internal combustion engine

US7661262B2 · kind B2 · utility

1Cited by

4References

13Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Klaus Bayerle · Obertraubling, DE
Wolfgang Moser · Regensburg, DE
Olivier Pioch · Bad Abbach, DE

Key dates

Filing date	Apr 28, 2005
Grant date	Feb 16, 2010
Priority date	—
Expiry date	Sep 30, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An internal combustion engine has an intake duct, at least one cylinder that takes in air via the intake duct and an exhaust gas duct, in which the exhaust gas catalytic converter is located, and into which the combusted air/fuel mixture is ejected from at least one cylinder. Depending on measurement values that are determined by sensors, input signals for the control of actuators of the internal combustion engine are generated by means of control functions based on torsional moment and by means of a dynamic charging model of the intake duct. A measurement is determined, which characterizes the difference of a desired air mass flow into the respective cylinder from an actual air mass flow into the cylinder. Depending on the measurement, a proper or improper heating up of the exhaust gas catalytic converter is identified.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.