Hydraulically driven cooling fan responsive to engine load

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9512831
APP PUB NO 20130243611A1
SERIAL NO

13616131

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Abstract

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A hydraulic fan drive for a cooling system of an internal combustion engine, in particular a diesel engine of a mobile working machine or a construction machine, is configured to be switched off for a short time or by way of a transition in dependence on a load of the internal combustion engine. A shut-off valve, which is arranged in a working line connecting a variable-displacement pump to a fan motor, is configured to switch off the fan drive. The fan drive is further configured to be switched off by rotational speed monitoring of the internal combustion engine.

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Patent Owner(s)

Patent OwnerAddress
ROBERT BOSCH GMBHSTUTTGART GERMANY

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Rill, Egon Horb, DE 3 7

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