Patent · US Active

Hydraulic control system having swing energy recovery

US9139982B2 · kind B2 · utility

2Cited by

41References

11Claims

0Family size

Assignee

Caterpillar Inc. · US

Inventors

Pengfei Ma · Naperville, US
Jiao Zhang · Naperville, US
Dayao Chen · Bolingbrook, US
Tonglin Shang · Bolingbrook, US

Key dates

Filing date	Jun 28, 2011
Grant date	Sep 22, 2015
Priority date	—
Expiry date	Apr 4, 2034

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF15B2211/88
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A hydraulic control system for a machine is disclosed. The hydraulic control system may have a pump configured to pressurize fluid, and a motor driven by a flow of pressurized fluid from the pump. The hydraulic control system may also have a first accumulator configured to receive pressurized fluid discharged from the motor and to selectively supply pressurized fluid to the motor, and a second accumulator configured to receive pressurized fluid discharged from the motor and selectively supply pressurized fluid to the motor.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.