Control device for a hydrostatic gear driven by a drive engine

Details Control device for a hydrostatic gear driven by a drive engine Control device for a hydrostatic gear driven by a drive engine

1984-10-16

1986-11-04

Look, Edward K.

Power plants

Pressure fluid source and motor

Condition responsive control of or by input to input pump...

60447, F16H 3946

Patent

active

046204172

ABSTRACT:
A control device for a hydrostatic gear driven by a drive engine, preferably an internal-combustion engine, is described, having an auxiliary pump, which is driven synchronously with the drive engine speed, for the generation of a control pressure which may be adjusted by way of a regulating valve, which is dependent upon the speed of the drive engine and which acts upon the setting mechanism for the hydrostatic gear. A pressure reducing valve ("inch" valve) is thereby provided for the purpose of shutting off the control pressure as a function of an external parameter and also for lowering the control pressure in the case of a load speed reduction of the drive engine ("partial inch" function).

REFERENCES:
patent: 3908377 (1975-09-01), Riedhammer
patent: 3932993 (1976-01-01), Riedhammer
patent: 3943715 (1976-03-01), Miyao et al.
patent: 3986357 (1976-10-01), Hoffmann
patent: 4158529 (1979-06-01), Nonnemacher et al.
patent: 4192337 (1980-03-01), Alderson et al.

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