Fan Drive Device with Proportional Valve
AssigneeRobert Bosch GmbH
InventorPaulo Teixeira
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Abstract
A fan drive device for use with a hydraulic pump featuring a constant displacement volume is disclosed. The fan drive device includes a hydraulic motor configured to be directly coupled to a fan. The hydraulic motor includes a first working connection, a second working connection, and a constant displacement volume. The fan drive device further includes a hydraulic valve having a pump connection and a tank connection. The hydraulic valve includes two fluid connections, each of which can be fluidically connected to the hydraulic motor. The hydraulic valve is designed as a proportional valve including a continuously adjustable control piston proportional to a control current of the hydraulic valve as the sole control mechanism for controlling the fan speed.
Claims18
A fan drive device for use with a hydraulic pump featuring a constant displacement volume, comprising:
- a hydraulic motor configured to be directly coupled to a fan, the hydraulic motor including a first working connection, a second working connection, and a constant displacement volume;
- and
- a hydraulic valve having a pump connection and a tank connection,
- wherein the hydraulic valve includes two fluid connections, each of which is configured to be fluidically connected to the hydraulic motor, and
- wherein the hydraulic valve is designed as a proportional valve including a continuously adjustable control piston proportional to a control current of the hydraulic valve as the sole control mechanism for controlling a fan speed.
Dependencies are inferred from the claim text.