Reversible hydrostatic transmission pump with drive engine speed

Details Reversible hydrostatic transmission pump with drive engine speed Reversible hydrostatic transmission pump with drive engine speed

1985-12-13

1988-05-10

Garrett, Robert E.

Power plants

Pressure fluid source and motor

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

60433, 60434, 60444, 91400, 91403, F16H 3946

Patent

active

047426764

ABSTRACT:
A control device for a drive unit, preferably the drive unit of a power vehicle, is provided having a hydrostatic transmission where the adjusting device of the latter and the adjusting device of the internal combustion engine are controlled by means of a servo piston loaded by control pressure, whereby the internal combustion engine is prevented during reversing from being adjusted to an increased power output through a circuit before the adjusting device of the hydrostatic transmission has passed through the zero-stroke position, and where the circuit has two shut off valves whose outlets are connected with a line, which are connected to the spring-side pressure chamber of the operating cylinder of the internal combustion engine through a multiway valve.

REFERENCES:
patent: 3818802 (1974-06-01), Wilson
patent: 4400939 (1983-08-01), Moranduzzo et al.
patent: 4543787 (1985-10-01), Eckhardt
patent: 4553620 (1985-11-01), Eckhardt et al.
patent: 4559778 (1985-12-01), Krusche

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