Method and device for controlling a quantity control valve
AssigneeRobert Bosch GmbH
InventorsMatthias Maess, Joerg Kuempel, Rainer Wilms, Uwe Richter
Life of this patent
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Abstract
In a fuel system of an internal combustion engine, fuel is delivered by a high-pressure pump into a fuel rail. The quantity of the delivered fuel is influenced by a quantity control valve (30) actuated by an electromagnetic actuating device. A limit-value retaining current is ascertained, at which the quantity control valve still remains in its closed state or is just opening.
Claims9
1-9. (canceled)
A method for controlling a quantity control valve of a high-pressure pump, comprising:
- controlling, using a first selected value of a control signal, the quantity control valve to assume a closed state;
- controlling, using a second selected value of the control signal, the quantity control valve to assume an opened state;
- and
- ascertaining a limit-value retaining current at which the quantity control valve one of (i) remains in the closed state or (ii) is just opening.
A non-transitory computer-readable data storage medium storing a computer program having program codes which, when executed by a computer, perform a method for controlling a quantity control valve of a high-pressure pump of a fuel injection system, the method comprising:
- controlling, using a first selected value of a control signal, the quantity control valve to assume a closed state;
- controlling, using a second selected value of the control signal, the quantity control valve to assume an opened state;
- and
- ascertaining a limit-value retaining current at which the quantity control valve one of (i) remains in the closed state or (ii) is just opening.
A device for controlling a quantity control valve of a high-pressure pump of a fuel injection system, comprising:
- a control unit including a processor configured to perform the following:
- control, using a first selected value of a control signal, the quantity control valve to assume a closed state;
- control, using a second selected value of the control signal, the quantity control valve to assume an opened state;
- and
- ascertain a limit-value retaining current at which the quantity control valve one of (i) remains in the closed state or (ii) is just opening.
Dependencies are inferred from the claim text.