Input torque control system for a variable displacement pump

Details Input torque control system for a variable displacement pump Input torque control system for a variable displacement pump

1979-08-24

1981-08-18

Croyle, Carlton R.

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

60451, F04B 4900

Patent

active

042843898

ABSTRACT:
A variable displacement pump has a displacement control cam operably connected to a displacement control cylinder within a pump housing and a pressure and flow sensitive compensating valve is connected to the pump housing for regulating output of the pump. The compensating valve is secured to the pump housing through a spacer block. A lever is disposed partly in the spacer block and partly in a housing of the compensating valve responsive to positioning of the pump cam through a mechanical connection for actuating a sleeve in the compensating valve to incorporate torque-limiting feedback regulation of the pump. An adjustment is operable from an outer surface of the spacer block to limit torsional operation of the lever about a pivot point.

REFERENCES:
patent: 3669570 (1972-06-01), Himmler
patent: 3985469 (1976-10-01), Ohta

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