Robert Boschgmbh

Sebastian Gepperth

Andreas Kellner

Horst Kleinknecht

Annabel Hackert

Johannes Georg Mueller

Vellaiyan Thiruvarma

Jasper Grohmann

Arno Matzner

Siegfried Zerbin

A method for operating a pump of a delivery unit, in particular of a fluid supply system, having a pump chamber and an actively controllable inlet valve and an actively controllable outlet valve for the pump chamber, wherein, for the delivery of a fluid, a pressure (p), which is to be provided by the pump, of the fluid for delivery is controlled in closed-loop fashion on the basis of a manipulated variable (V), and wherein, within one full cycle (Z) of the pump (), at least one of inlet valve () and outlet valve () is activated only if fluid is to be delivered, and is not activated if no fluid is to be delivered, and to a fluid supply system.

Method for operating a pump, and fluid supply system having a pump of said type

A method for identifying deviations in quantity in the case of a fluidic metering system (-), in particular an internal combustion engine of a motor vehicle, in which at least one conveying pump () for conveying a fluid, and at least one pressure sensor () for determining a fluidic pressure in the metering system (-), are disposed, wherein it is provided in particular that a test admeasurement of fluid is carried out (), that a temporal pressure drop in the metering system (-) is detected (), that the detected temporal pressure drop is compared with a pressure drop () that is to be theoretically expected (), and that a deviation in quantity of the metering system (-) is determined based on the result of the comparison ().

Method for determining deviations in quantity in the case of a fluidic metering system

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Stuttgart, Germany

Sebastian Gepperth