US 11,767,860 B2 · Smart flow dual pump hydraulic system

Abstract

Systems and apparatuses include a primary hydraulic pump including a primary displacement actuator and a primary pressure port, a primary load sense system fluidly coupled to the primary displacement actuator, a secondary hydraulic pump including a secondary displacement actuator and a secondary pressure port, a secondary load sense system fluidly coupled to the secondary displacement actuator, and a crossover pressure controller coupled between the primary pressure port and the secondary pressure port and including: a selectively energizable crossover pressure solenoid, and a crossover pressure spool movable by the crossover pressure solenoid between a combined pressure position providing fluid communication between the primary pressure port and the secondary pressure port, and a separate pressure position inhibiting fluid communication between the primary pressure port and the secondary pressure port.

Claims20

Dependent claims

A multiple pump hydraulic system for a vehicle, comprising:

a primary hydraulic pump including a primary displacement actuator and a primary pressure port;
a primary load sense system fluidly coupled to the primary displacement actuator;
a secondary hydraulic pump including a secondary displacement actuator and a secondary pressure port;
a secondary load sense system fluidly coupled to the secondary displacement actuator;
and
a crossover pressure controller coupled between the primary pressure port and the secondary pressure port and including:
a selectively energizable crossover pressure solenoid, and
a crossover pressure spool movable by the crossover pressure solenoid between a combined pressure position providing fluid communication between the primary pressure port and the secondary pressure port, and a separate pressure position inhibiting fluid communication between the primary pressure port and the secondary pressure port,
wherein the crossover pressure controller is actuatable independent of the primary load sense system and the secondary load sense system.

6 more elements

A vehicle, comprising:

an electrohydraulic remote (EHR) system including a first subset of EHR ports and a second subset of EHR ports;
a power beyond system including a first subset of power beyond ports and a second subset of power beyond ports;
a multiple pump hydraulic system including a primary hydraulic pump and a secondary hydraulic pump;
and
a control system structured to control operation of a crossover pressure controller between a combined flow position wherein the multiple pump hydraulic system operates in a combined flow mode, and a separate flow position wherein the multiple pump hydraulic system operates in a separate flow mode,
wherein the crossover pressure controller is actuatable independent of a load sense system.

3 more elements

Dependencies are inferred from the claim text.

Smart flow dual pump hydraulic system

Life of this patent

Smart flow dual pump hydraulic system

Life of this patent

Abstract

Claims20