Paul W Brenner

US Patent:

8226370, Jul 24, 2012

Filed:

Apr 13, 2009

Appl. No.:

12/422893

Inventors:

Duqiang Wu - Eden Prairie MN, US
G. Clark Fortune - Farmington Hills MI, US
Aaron H. Jagoda - St. Louis Park MN, US
John Ryan Kess - Bloomington MN, US
Thomas J. Stoltz - Allen Park MI, US
Paul Brenner - Chaska MN, US
Benjamin Morris - Ann Arbor MI, US

Assignee:

Eaton Corporation - Cleveland OH

International Classification:

F04B 49/00

US Classification:

417 12, 417539

Abstract:

An exemplary hydraulic system includes a first digital valve fluidly connectable to a first hydraulic load and a pump. The first valve is operable to fluidly connect the first hydraulic load to the pump. A second digital valve is fluidly connectable to a second hydraulic load and the pump. The second valve is operable to fluidly connect the second hydraulic load to the pump. The system includes a first sensor for detecting a pump discharge pressure and a second sensor for detecting an inlet pressure of the first hydraulic load. A controller is configured to determine a time delay based on the pump discharge pressure and the first hydraulic load inlet pressure and to send a control signal instructing the second valve to commence opening at a time substantially equal to the time delay after commencing closing the first valve.

US Patent:

8434302, May 7, 2013

Filed:

Apr 13, 2009

Appl. No.:

12/422911

Inventors:

Duqiang Wu - Eden Prairie MN, US
G. Clark Fortune - Farmington Hills MI, US
Aaron H. Jagoda - St. Louis Park MN, US
John Ryan Kess - Bloomington MN, US
Thomas J. Stoltz - Allen Park MI, US
Paul Brenner - Chaska MN, US
Benjamin Morris - Ann Arbor MI, US

Assignee:

Eaton Corporation - Cleveland OH

International Classification:

F16D 31/02

US Classification:

60463, 60459

Abstract:

An exemplary hydraulic system includes a digital valve operable to fluidly connect a hydraulic load to a pressure supply. A digital controller is operably connected to the digital valve. The digital controller stores a target value of a hydraulic system operating parameter and is configured to formulate a pulse width modulated control signal based on the target value. The digital controller transmits the control signal to the digital valve for controlling the operation of the valve.

US Patent:

8474364, Jul 2, 2013

Filed:

Apr 13, 2009

Appl. No.:

12/422881

Inventors:

Duqiang Wu - Eden Prairie MN, US
G. Clark Fortune - Farmington Hills MI, US
Aaron H. Jagoda - St. Louis Park MN, US
John R. Kess - Bloomington MN, US
Thomas J. Stoltz - Southfield MI, US
Paul Brenner - Chaska MN, US
Benjamin Morris - Ann Arbor MI, US

Assignee:

Eaton Corporation - Cleveland OH

International Classification:

F15B 13/07
F15B 11/20

US Classification:

91514, 60420

Abstract:

An exemplary hydraulic system includes a plurality of digital valves, each valve fluidly connectable to a corresponding hydraulic load. The digitals valves are operable to fluidly connect the corresponding hydraulic load to a pressure source. The hydraulic system further includes a digital controller operably connected to the plurality of digital valves. The digital controller is configured to assign a priority level so that it is associated with each of a plurality of hydraulic loads, and to formulate a pulse width modulated control signal based on the assigned priority levels. The digital controller transmits the control signal to the plurality of digital valves for controlling the operation of the valves.

US Patent:

8505291, Aug 13, 2013

Filed:

Apr 13, 2009

Appl. No.:

12/422899

Inventors:

Duqiang Wu - Eden Prairie MN, US
G. Clark Fortune - Farmington Hills MI, US
Aaron H. Jagoda - St. Louis Park MN, US
John Ryan Kess - Bloomington MN, US
Thomas J. Stoltz - Allen Park MI, US
Paul Brenner - Chaska MN, US
Benjamin Morris - Ann Arbor MI, US

Assignee:

Eaton Corporation - Cleveland OH

International Classification:

F16D 31/02
F15B 11/10
F15B 13/044

US Classification:

60459, 91433, 91459

Abstract:

An exemplary hydraulic system includes a digital valve operable to fluidly connect a hydraulic load to a pressure supply, and an orifice disposed in a flow path between the hydraulic load and the digital valve. A digital controller is operably connected to the digital valve. The digital controller stores a target pressure drop across the orifice and is configured to determine an actual pressure drop across the orifice and formulate a control signal based on the target pressure drop and the actual pressure drop. The controller transmits the control signal to the digital valve for controlling the operation of the valve.

Author:

Paul Brenner

ISBN #:

0791449645

Author:

Paul Brenner

ISBN #:

0791449637

Author:

Paul Brenner

ISBN #:

0875164544

Author:

Paul Brenner

ISBN #:

0933071191

Author:

Paul F. Brenner

ISBN #:

0632043229

Author:

Paul F. Brenner

ISBN #:

0865422699

Author:

Paul F. Brenner

ISBN #:

0874894824

Author:

Paul F. Brenner

ISBN #:

0874893062