Caterpillar Inc.

Ryan Harken

Anthony S Cooksey

Robert Alan Jackson

Timothy L Hand

Eric M Prater

Jeffrey Jones

David Guetschow

Fuel tank

A hydraulic apparatus and a method of controlling the hydraulic apparatus are disclosed. The hydraulic apparatus includes a first pump having a first fixed displacement, a second pump having a second fixed displacement, and a diverter. The diverter includes a first diverter inlet port fluidly coupled to a discharge of the second pump, a first diverter outlet port fluidly coupled to a discharge of the first pump, and a second diverter outlet port fluidly coupled to a low pressure system, the low pressure system having a fluid pressure lower than a fluid pressure of the discharge of the first pump. The diverter is operable to selectively vary fluid communication between the first diverter inlet port and either the first diverter outlet port or the second diverter outlet port based on a reference pressure.

Hydromechanical power management of fixed displacement boost pumps

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Dunlap, IL, United States of America

Ryan Harken