Meng Cheng Wang

US Patent:

20210010490, Jan 14, 2021

Filed:

Jul 24, 2020

Appl. No.:

16/938221

Inventors:

- Dublin 4, IE
Meng WANG - Eden Prairie MN, US

Assignee:

Eaton Intelligent Power Limited - Dublin 4

International Classification:

F15B 11/00
E02F 9/22
B66C 13/06
E04G 21/04
F15B 11/044

Abstract:

A hydraulic system () and method for reducing boom dynamics of a boom (), while providing counter-balance valve protection, includes a hydraulic cylinder (), first and second counter-balance valves (), and first and second control valves (). A net load () is supported by a first chamber () of the hydraulic cylinder, and a second chamber () of the hydraulic cylinder may receive fluctuating hydraulic fluid flow from the second control valve to produce a vibratory response () that counters environmental vibrations () on the boom. The first control valve may apply a holding pressure and thereby hold the first counter-balance valve closed and the second counter-balance valve open.

US Patent:

20200248720, Aug 6, 2020

Filed:

Dec 9, 2019

Appl. No.:

16/707782

Inventors:

- Dublin, IE
Meng (Rachel) WANG - Eden Prairie MN, US

International Classification:

F15B 11/00
E02F 9/22
B66C 13/06
E04G 21/04
F15B 21/00
F15B 11/044

Abstract:

A hydraulic system () and method for reducing boom dynamics of a boom (), while providing counter-balance valve protection, includes a hydraulic cylinder (), first and second counter-balance valves (), first and second control valves (), and a selection valve set (). The selection valve set is adapted to self-configure to a first configuration and to a second configuration when a net load () is supported by a first chamber () and a second chamber () of the hydraulic cylinder, respectively. When the selection valve set is enabled in the first and second configurations, the second and first control valve may fluctuate hydraulic fluid flow to the second and first chamber, respectively, to produce a vibratory response () that counters environmental vibrations () of the boom. When the selection valve set is not enabled, the first and second counter-balance valves are adapted to provide the hydraulic cylinder with conventional counter-balance valve protection.

US Patent:

20190316323, Oct 17, 2019

Filed:

Apr 18, 2019

Appl. No.:

16/388546

Inventors:

- Dublin 4, IE
Michael Berne RANNOW - Eden Prairie MN, US
Meng WANG - Eden Prairie MN, US
Chad Anthony LARISH - Minnetonka MN, US

International Classification:

E02F 9/22
E02F 9/20
B60K 25/00
B60K 25/06

Abstract:

An energy conserving hydraulic system for a mobile work machine includes a prime mover, a drivetrain, a baseline hydraulic system, a power-take-off, a transformer, a work implement, and an accumulator. The drivetrain may include an automated manual transmission (AMT) that is rotationally coupled to the prime mover and the power-take-off. The baseline hydraulic system is powered by the prime mover and includes a first hydraulic circuit. The transformer is hydraulically coupled to second and third hydraulic circuits. The work implement is actuated by an actuator that is adapted to be simultaneously hydraulically coupled to the first and the second hydraulic circuits. The power-take-off is adapted to exchange shaft power with the transmission. A clutch selectively rotationally couples the transmission and the power-take-off. The accumulator is hydraulically coupled to the second hydraulic circuit. The second hydraulic circuit is hydraulically coupled to a first rotating group of the hydraulic transformer, and a third hydraulic circuit is hydraulically coupled to a second rotating group of the hydraulic transformer.

US Patent:

20190101137, Apr 4, 2019

Filed:

Jul 27, 2018

Appl. No.:

16/047630

Inventors:

- Dublin 4, IE
Meng WANG - Eden Prairie MN, US

International Classification:

F15B 11/00
E04G 21/04
F15B 11/044
E02F 9/22
B66C 13/06

Abstract:

A hydraulic system () and method for reducing boom dynamics of a boom (), while providing counter-balance valve protection, includes a hydraulic cylinder (), first and second counter-balance valves (), and first and second control valves (). A net load () is supported by a first chamber () of the hydraulic cylinder, and a second chamber () of the hydraulic cylinder may receive fluctuating hydraulic fluid flow from the second control valve to produce a vibratory response () that counters environmental vibrations () on the boom. The first control valve may apply a holding pressure and thereby hold the first counter-balance valve closed and the second counter-balance valve open.

US Patent:

20180156243, Jun 7, 2018

Filed:

Nov 6, 2017

Appl. No.:

15/804542

Inventors:

- Cleveland OH, US
Meng (Rachel) WANG - Eden Prairie MN, US

Assignee:

EATON CORPORATION - Cleveland OH

International Classification:

F15B 11/00
B66C 13/06
E02F 9/22
E04G 21/04
F15B 11/044
F15B 21/00

Abstract:

A hydraulic system () and method for reducing boom dynamics of a boom (), while providing counter-balance valve protection, includes a hydraulic cylinder (), first and second counter-balance valves (), first and second control valves (), and a selection valve set (). The selection valve set is adapted to self-configure to a first configuration and to a second configuration when a net load () is supported by a first chamber () and a second chamber () of the hydraulic cylinder, respectively. When the selection valve set is enabled in the first and second configurations, the second and first control valve may fluctuate hydraulic fluid flow to the second and first chamber, respectively, to produce a vibratory response () that counters environmental vibrations () of the boom. When the selection valve set is not enabled, the first and second counter-balance valves are adapted to provide the hydraulic cylinder with conventional counter-balance valve protection.

US Patent:

20170121942, May 4, 2017

Filed:

Jun 10, 2015

Appl. No.:

15/318031

Inventors:

- Cleveland OH, US
Michael Berne RANNOW - Eden Prairie MN, US
Meng WANG - Eden Prairie MN, US
Chad Anthony LARISH - Minnetonka MN, US

International Classification:

E02F 9/22
B60K 25/06
E02F 9/20

Abstract:

An energy conserving hydraulic system for a mobile work machine includes a prime mover, a drivetrain, a baseline hydraulic system, a power-take-off, a transformer, a work implement, and an accumulator. The drivetrain may include an automated manual transmission (AMT) that is rotationally coupled to the prime mover and the power-take-off. The baseline hydraulic system is powered by the prime mover and includes a first hydraulic circuit. The transformer is hydraulically coupled to second and third hydraulic circuits. The work implement is actuated by an actuator that is adapted to be simultaneously hydraulically coupled to the first and the second hydraulic circuits. The power-take-off is adapted to exchange shaft power with the transmission. A clutch selectively rotationally couples the transmission and the power-take-off. The accumulator is hydraulically coupled to the second hydraulic circuit. The second hydraulic circuit is hydraulically coupled to a first rotating group of the hydraulic transformer, and a third hydraulic circuit is hydraulically coupled to a second rotating group of the hydraulic transformer.

US Patent:

20160222989, Aug 4, 2016

Filed:

Aug 29, 2014

Appl. No.:

14/915449

Inventors:

- Cleveland OH, US
Meng WANG - Eden Prairie MN, US

International Classification:

F15B 11/00
E02F 9/22
E04G 21/04
B66C 13/06

Abstract:

A hydraulic system () and method for reducing boom dynamics of a boom (), while providing counter-balance valve protection, includes a hydraulic cylinder (), first and second counter-balance valves (), and first and second control valves (). A net load () is supported by a first chamber () of the hydraulic cylinder, and a second chamber () of the hydraulic cylinder may receive fluctuating hydraulic fluid flow from the second control valve to produce a vibratory response () that counters environmental vibrations () on the boom. The first control valve may apply a holding pressure and thereby hold the first counter-balance valve closed and the second counter-balance valve open.

US Patent:

20160108936, Apr 21, 2016

Filed:

May 13, 2014

Appl. No.:

14/894662

Inventors:

Meng (Rachel) WANG - Eden Prairie MN, US

International Classification:

F15B 11/00
E04G 21/04
F15B 21/00

Abstract:

A hydraulic system () and method for reducing boom dynamics of a boom (), while providing counter-balance valve protection, includes a hydraulic cylinder (), first and second counter-balance valves (), first and second control valves (), and a selection valve set (). The selection valve set is adapted to self-configure to a first configuration and to a second configuration when a net load () is supported by a first chamber () and a second chamber () of the hydraulic cylinder, respectively. When the selection valve set is enabled in the first and second configurations, the second and first control valve may fluctuate hydraulic fluid flow to the second and first chamber, respectively, to produce a vibratory response () that counters environmental vibrations () of the boom. When the selection valve set is not enabled, the first and second counter-balance valves are adapted to provide the hydraulic cylinder with conventional counter-balance valve protection.