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US 2001/0043047 A1Published application
Windshield wiper system
AssigneeRobert Bosch GmbH
InventorsHans-Georg Klug, Gebhard Michenfelder, Hans Meier, Henry Blitzke, Michael May
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AssigneeRobert Bosch GmbH
InventorsHans-Georg Klug, Gebhard Michenfelder, Hans Meier, Henry Blitzke, Michael May
Estimating the term…
Operation of a windshield wiper system for cleaning a windshield of a motor vehicle includes driving at least one wiper by an electric drive motor so that the at least one wiper shifted between two terminal positions, processing by a control unit as the input variable the output signals of a rain quantity and the switching signals of a manually controllable switch means, and processing as the output variable a supply voltage of the electric drive motor so as to control the wiper speed, operating the at least one wiper (8) with variable intermittent interval times and at variable wiper speeds, as a function of a rain quantity detected by the rain sensor (12), so that precisely one wiper speed and precisely one intermittent interval time are associated with each measured rain quantity, and moving the at least one wiper (8) in an intermittent mode with a lower speed than in a continuous mode.
A windshield wiper system for cleaning a windshield of a motor vehicle, comprising at least one wiper that can be shifted between two terminal positions and is driven by an electric drive motor, and having a control unit, which as an input variable processes the output signals of a rain sensor as well as the switching signals of a manually controllable switch means and is the output variable controls the supply voltage of the electric drive motor and thus the wiper speed, and as a function of a rain quantity detected by the rain sensor (2), the at least one wiper (8) can be operated with variable intermittent interval times and at variable wiper speeds, so that precisely one wiper speed and precisely one intermittent interval time are associated with each measured rain quantity, and the at least one wiper (8) moves in an intermittent mode with a lower speed than in a continuous mode.
A method for operating a windshield wiper system for cleaning a windshield of a motor vehicle, comprising the steps of driving at least one wiper by an electric drive motor so that the at least one wiper shifted between two terminal positions, processing by a control unit as the input variable the output signals of a rain quantity and the switching signals of a manually controllable switch means, and processing as the output variable a supply voltage of the electric drive motor so as to control the wiper speed, operating the at least one wiper (8) with variable intermittent interval times and at variable wiper speeds, as a function of a rain quantity detected by the rain sensor (12), so that precisely one wiper speed and precisely one intermittent interval time are associated with each measured rain quantity, and moving the at least one wiper (8) in an intermittent mode with a lower speed than in a continuous mode.
Dependencies are inferred from the claim text.