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AssigneeKnorr-Bremse Systeme fur Nutzfahrzeuge GmbH
InventorsPeter M. Bielig, Klaus Brahler, Gunther Gschomann
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Electronic control apparatus for motor vehicles. The apparatus includes a test circuit which causes a test current to flow through a load being operated by the apparatus and which detects the magnitude of the test current. From the magnitude of the test current, an evaluation circuit determines whether the ground potential of the control apparatus and the ground potential of the load are at different levels. In response to a potential difference between the two ground potentials, the evaluation circuit initiates countermeasures for preventing damage to the electronic control apparatus, such as selectively disconnecting the load with a power switch responsive to the evaluation circuit.
An electronic control apparatus that controls an electrical load for use in motor vehicles comprising:
Electronic control equipment for motor vehicles, particularly electronic control brake equipment, with at least one terminal for supply voltage, at least one ground terminal M1 and at least on output terminal for driving a load lying at ground M2 on one side, comprising:
A method four protecting an electronic control apparatus that controls an electrical load for use in motor vehicles, said control apparatus having at least one supply voltage terminal for providing a supply voltage to the control apparatus, at least one ground terminal for grounding the control apparatus at a ground potential M1, and at least one output terminal for driving the load with the supply voltage, said load having a first connection to the output terminal and a second connection grounded to a ground potential M2, said method comprising the steps of:
Dependencies are inferred from the claim text.