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AssigneeRobert Bosch GmbH
InventorsKlaus Streit, Walter Buxmeyer, Peter Schulzke, Klaus Harsch
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An installation for the operation of electromagnetic loads, especially solenoid valves, in fuel supply systems in internal combustion engines, wherein a measuring resistor as well as a switch are connected in series with the load and the entire arrangement is connected to the two supply voltage terminals. The installation comprises two comparators connected in parallel with the measuring resistor, at least one resistor being connected in front of these comparators, and controllable current source arranged between the junction of the threshold switch and the resistor in the proximity of the load, as well as a supply voltage terminal. The supply voltage of one of the comparators is made dependent on the voltage in the freewheel circuit, to maintain at least one of the comparators in the operating position even during freewheeling operation.
An installation for the operation of electromagnetic loads, especially solenoid valves, in the fuel supply systems of internal combustion engines having supply voltage lines, including:
A method of operating a solenoid injection valve having a winding in the fuel supply system of an internal combustion engine comprising the steps of:
Dependencies are inferred from the claim text.