Volkswagen Ag

Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr

Christian Steinbrecher

Sebastian Heinken

Matthias Schultalbers

Olaf Magnor

Wolfram Gottschalk

Tim Thaler

Lars Hentschel

Lars Stratmann

Andreas Sprysch

Dimitri Illarionov

Lea Maria Lamminger

Franz Kallage

Pierre Misiek

Peter DÜNOW

Nils Schlenther

Martin Schewik

Andreas Berns

Gunnar Maletzki

Steffen Lack

Melanie Kimmel

A method for monitoring a particulate filter in an exhaust system of an internal combustion engine. A loading of the particulate filter is determined by a differential pressure measurement between the inlet of the particulate filter and the outlet of the particulate filter. A loading of the particulate filter is modeled by a soot loading model for the particulate filter. A regeneration of the particulate filter is initiated and the particle removal is compared from the particulate filter determined through the differential pressure measurement with the particle removal modeled by the soot loading model. A fault message is initiated if a difference between the calculated particle removal and the measured particle removal exceeds a threshold value. An internal combustion engine having a control unit and an exhaust system for carrying out such a method are also provided.

Method for monitoring a regeneration of a particulate filter in the exhaust system of an internal combustion engine

Regeneration monitoring of a particulate filter in an exhaust gas system of an internal combustion engine of a motor vehicle. Different soot loading stages for the particulate filter are defined. A soot loading of the particulate filter is determined by use of a soot loading model. A soot loading of the particulate filter via a differential pressure measurement across the particulate filter is determined. A regeneration of the particulate filter is initiated when a certain soot loading stage of the particulate filter is reached. A soot discharge from the particulate filter is compared, expected via the soot loading model, to a soot discharge from the particulate filter that is determined via a differential pressure measurement. An error message is outputted when a regeneration stage of the particulate filter, determined by the soot loading model, does not correlate with a regeneration stage that is determined via the differential pressure measurement.

Method for monitoring regeneration of a particulate filter in the exhaust gas system of an internal combustion engine

A method for regenerating a particulate filter in an exhaust system of an internal combustion engine, wherein it is thereby provided that the quantity of overrun air in the overrun operation of the combustion engine be adapted to the air required for oxidizing the soot trapped in the particulate filter to achieve a rapid and efficient regeneration of the particulate filter, and it is provided that a throttle valve be opened in overrun operation to an extent that allows a maximum permissible soot conversion without risking thermal damage to the particulate filter.

Method for regenerating a particulate filter in the exhaust system of a gasoline engine

A method is provided for equalizing the cylinders of a multi-cylinder internal combustion engine. The internal combustion engine is configured as a reciprocating engine having direct injection and spark ignition. A fuel mass is injected in a cylinder-specific manner, and a cylinder-specific air mass and a cylinder-specific ignition time are each adjustable. An injection amount is equalized, then a charge is equalized and then a mean combustion pressure is equalized.

Method for cylinder equalization in a multi-cylinder internal combustion engine

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Wismar, Germany

Christian Steinbrecher