Control system having override for fluid operated work elements

Details Control system having override for fluid operated work elements Control system having override for fluid operated work elements

F - Mech Eng,Light,Heat,Weapons

15

B

138/72.11

F15B 13/06 (2006.01) F04B 49/00 (2006.01) F04B 49/08 (2006.01) F15B 11/17 (2006.01)

Patent

CA 1044569

CONTROL SYSTEM HAVING OVERRIDE FOR FLUID OPERATED WORK ELEMENTS Abstract of the Disclosure A control system has override for fluid operated work elements served by at least two variable displacement pumps each serving a separate circuit. At least two work elements are served by the first circuit and at least one work element is served by the second circuit. The discharge rate of the first pump is controlled by a signal delivered from a summing valve in response to the pressures of the first and second circuits during operation of a preselected one of the work elements of the first circuit and controlled by a modified pilot pressure signal in response to operation of only the other work element of the first circuit. -1-

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