Patent · US Active

Control system for recovering swing motor kinetic energy

US7908852B2 · kind B2 · utility

28Cited by

16References

19Claims

0Family size

Assignees

Caterpillar Inc. · US
Caterpillar SARL · CH

Inventors

Jiao Zhang · Naperville, US
Pengfei Ma · Naperville, US
Michael Schwab · Crest Hill, US
Tonglin Shang · Bolingbrook, US
Kalpesh Patel · Romeoville, US

Key dates

Filing date	Feb 28, 2008
Grant date	Mar 22, 2011
Priority date	—
Expiry date	Apr 16, 2029

Classification

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

Abstract

This disclosure relates to a hydraulic system and method that converts the kinetic energy generated by the operation of a swing motor into hydraulic potential energy and reuses the hydraulic potential energy for swing motor acceleration. An accumulator can be provided for storing exit oil from the swing motor that is pressurized by the inertia torque applied on the moving motor via movement of an upper structure of a machine. The pressurized oil in the accumulator can be reused to accelerate the swing motor by supplying pressurized oil to the swing motor.

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