Robert Boschgmbh

Oliver Krannich

Werner Mezger

Lutz Reuschenbach

Torsten Baumann

Andreas Lassl

Alex Grossmann

Dirk Hartmann

Alexandre Wagner

Michael Drung

Ralf Buehrle

Ingo Fecht

Rainer Maier

Benedikt Alt

Thomas Baumann

Joerg Haffelder

Christoph Schweizer

Fabian Straub

Tobias Zolg

A method for the operation of a particulate filter in an exhaust aftertreatment system of a combustion engine () with the following steps: set up () a pressure difference model, which models a measured pressure difference (&#x394;p) which drops across the particulate filter () as a function () of a volume flow ({dot over (V)}) through the particulate filter () with an offset value (a, C); measure () multiple measurement values () for the pressure difference (&#x394;p) at different volume flows ({dot over (V)}) and solve () the pressure difference model as a function of the pressure difference (&#x394;p), whereby the offset value (a, C) is also determined.

Method for operating a particulate filter in an exhaust aftertreatment system of a combustion engine

A method for determining a phase position of an adjustable camshaft of an internal combustion engine having a sensor wheel and a camshaft adjuster. The phase position of the camshaft is determined on the basis of phase flank interrupts triggered by the sensor wheel and a model which depends on at least one performance characteristic of the camshaft adjuster.

Method for determining a phase position of an adjustable camshaft

A method is described for monitoring a camshaft adjustment of an internal combustion engine in a first operating mode, in which, depending on a time characteristic of an actual value of the angular position of the camshaft adjustment and a time characteristic of a first setpoint value of the angular position of the camshaft adjustment, a decision is made that there are errors in the camshaft adjustment, the decision also depending on a time characteristic of a second setpoint value of the angular position of the camshaft adjustment, the first setpoint value and the second setpoint value each being ascertained at the same operating point of the internal combustion engine, and the first setpoint value for operating the internal combustion engine being ascertained in the first operating mode and the second setpoint value for operating the internal combustion engine being ascertained in a second operating mode.

Method and device for controlling an internal combustion engine

In a method for monitoring a camshaft adjustment of an internal combustion engine in which a setpoint value of an angular position is compared with an actual value of the angular position, a more differentiated fault diagnosis is achieved in that at least two fault types are able to be detected on the basis of the profile of the actual value over time.

Method for monitoring a camshaft adjustment of an internal combustion engine

A method and a device for operating an internal combustion engine having multiple cylinders allows for an operating state of the internal combustion engine to be switched over as quickly as possible following the receipt of a switchover request. For this purpose, at least one intake or exhaust valve of a cylinder is switched off or at least one switched-off intake or exhaust valve of the cylinder is switched on again in at least one operating state of the internal combustion engine in response to the switchover request.

Method and device for operating an internal combustion engine having multiple cylinders

In a method for operating a camshaft adjusting device, using an actuating drive, the actual setting of a camshaft with respect to the rotation of the crankshaft is followed corresponding to a setpoint setting ascertained in a control unit. In response to the occurrence of a lasting system deviation between the actual setting and the setpoint setting, an error signal is generated. The error signal is designed in multiple stages as a function of the system deviation, different weightings being imputed to the individual stages of the fault indication. By this measure, the fault indications of different weightings may be processed. Faults that are not serious, but nevertheless require attention, may be treated separately from serious faults.

Method for operating a camshaft adjusting device

To operate a steplessly adjustable camshaft control device, particularly reliably and safely, an adaptation of the camshaft and the crankshaft is performed so that a phase angle (actual value) of the camshaft to the crankshaft is determined, the phase angle is monitored while operating the internal combustion engine and the camshaft control device is controlled as a function of a variable setpoint value so that the phase angle is equivalent to the setpoint value.

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Tamm, Germany

Oliver Krannich