Device for the Incremental Control of a Direct-Current Motor for the Cooling Fan of a Motor Vehicle
AssigneeRobert Bosch GmbH
InventorsRichard Vogt, Andreas Ewert, Michael Strupp
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Abstract
The invention relates to a device (10) for the incremental control of at least one first direct-current motor (12) for the cooling fan of a motor vehicle. Said device comprises a first (14) and a second current-limiting component (16), and a first (22), a second (24) and a third switching element (28). The inventive device is characterized in that the switching elements (22, 24, 28) connect the first (14) and the second current-limiting component (16) in such a manner that the cooling capacity of the cooling fan can be varied in at least four levels different from zero.
Claims14
A device (10) for the incremental control of at least a first direct-current motor (12) for a cooling fan of a motor vehicle with a first current-limiting component (14) and a second current-limiting component (16), and a first (22), second (24) and third switching element (28),
- wherein
- the switching elements (22, 24, 28) connect the first (14) and second current-limiting components (16) in a manner such that the cooling capacity of the cooling fan can be varied in at least four non-zero levels.
Dependencies are inferred from the claim text.