Exhaust pressurizing circuit including flow amplification

Details Exhaust pressurizing circuit including flow amplification Exhaust pressurizing circuit including flow amplification

F - Mech Eng,Light,Heat,Weapons

15

B

F15B 13/00 (2006.01) F15B 11/044 (2006.01) F15B 21/14 (2006.01)

Patent

CA 2083136

-38- Abstract of the Disclosure EXHAUST PRESSURIZING CIRCUIT INCLUDING FLOW AMPLIFICATION An exhaust manifold (25) of a fluid power and control system, the pressure of which is varied when the fluid motor (10) is subjected to a bidirectional positive or negative type load (W). This exhaust manifold (25) is also supplied from a source of exhaust manifold pressurizing oil (29) other than the system pump (18). This source of exhaust manifold pressurizing oil (29) may include a flow amplifying device (57) which is activated when the fluid motor (10), in the form of a cylinder, moves a load in the direction of its piston rod end (11) and when the piston rod end (11) of cylinder (10) is subjected to a negative load pressure and when the pressure in the exhaust manifold (25) drops below a certain minimum preselected level. The flow amplifying device (57) is also activated when the cylinder (10) controls a negative type load and when the system pump (18) becomes isolated from the fluid motor (10), in order to conserve the fluid power, generated by the pump (18), for use in control of other system loads (22).

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