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Pengfei F Ma, 631744 Cornell Ct, Naperville, IL 60565

Known as:
Pengfei C Ma Peng Fei Ma Peng F Ma Fei Peng
Related to:
Cassy Ma 34

Pengfei Ma Phones & Addresses

1744 Cornell Ct, Naperville, IL 60565    630-7539156   

Norman, OK   

2252 Abbeywood Dr, Lisle, IL 60532    630-7539156   

106 Hidden Oaks Dr, Cary, NC 27513    919-4691372   

2252 Abbeywood Dr, Lisle, IL 60532    630-6703268   

Work

Position: Service Occupations

Education

Degree: High school graduate or higher
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Mentions for Pengfei F Ma

Resumes & CV records

Resumes

Pengfei Ma Photo 19

Black Belt 2

Location:
Chicago, IL
Industry:
Machinery
Work:
Caterpillar Inc.
Black Belt 2
Education:
University of Oklahoma 1998 - 2000
Master of Science, Masters Harbin Institute of Technology 1981 - 1988
Skills:
Hydraulics, Hydraulic Hybrid, Hydraulic Systems, Mobile Hydraulics, Hydraulic Valve Design, Mechanical Engineering, Engineering, Project Engineering, Design For Manufacturing, Dmaic, Fmea, Manufacturing, Pro Engineer, Gd&T, Solidworks, Manufacturing Engineering, Finite Element Analysis, Six Sigma, Lean Manufacturing, Continuous Improvement, Machining, Cad, Ansys, Kaizen, Teamcenter, Valve Design
Languages:
English
Mandarin
Pengfei Ma Photo 20

Pengfei Ma

Skills:
Leadership, Microsoft Excel, Microsoft Office, Research, Customer Service, Microsoft Word, Microsoft Powerpoint, Engineering, Root Cause Analysis, Six Sigma
Pengfei Ma Photo 21

Pengfei Ma

Pengfei Ma Photo 22

Pengfei Ma

Publications & IP owners

Us Patents

Electronically And Hydraulically-Actuated Drain Value

US Patent:
7121189, Oct 17, 2006
Filed:
Nov 30, 2004
Appl. No.:
10/998616
Inventors:
Mark P. Vonderwell - Dunlap IL, US
Yun Guo - Peoria IL, US
Mikhall A. Sorokine - Naperville IL, US
Aleksandar M Egelja - Naperville IL, US
Pengfei Ma - Naperville IL, US
Assignee:
Caterpillar Inc. - Peoria IL
Shin Caterpillar Mitsubishi Ltd
International Classification:
F16K 31/12
US Classification:
91529, 91459
Abstract:
A valve for a fluid circuit is disclosed. The valve has a main valve element with a first end and a second end. The main valve element is movable between a flow-passing and a flow-blocking position in response to fluid pressure exerted on the first and second ends. The valve also has a solenoid mechanism operatively associated with the main valve element to move the main valve element toward one of the flow-passing and the flow-blocking positions. The valve further has a main valve spring configured to bias the main valve element in opposition to movement caused by the solenoid mechanism. The valve additionally has a relief valve element configured to communicate a fluid with the first end of the main valve element in response to a fluid pressure to initiate movement of the main valve element.

Hydraulic System Having Imv Ride Control Configuration

US Patent:
7194856, Mar 27, 2007
Filed:
May 31, 2005
Appl. No.:
11/139687
Inventors:
Pengfei Ma - Naperville IL, US
Aleksandar M. Egelja - Naperville IL, US
Mikhail A. Sorokine - Naperville IL, US
Assignee:
Caterpillar Inc - Peoria IL
Shin Caterpillar Mitsubishi Ltd
International Classification:
F16D 31/02
F15B 21/04
US Classification:
60418, 60469
Abstract:
A hydraulic control system for a work machine is disclosed. The hydraulic control system has a source of pressurized fluid and at least one actuator having a first and a second chamber. The hydraulic control system also has a first independent metering valve disposed between the source and the first chamber, and a second independent metering valve disposed between the reservoir and the second chamber. The first and second independent metering valves each have a valve element movable from a flow blocking to a flow passing position to facilitate movement of the at least one actuator. The hydraulic control system further has an accumulator and a third independent metering valve disposed in parallel with the first independent metering valve and between the accumulator and the first chamber. The third independent metering valve is configured to selectively communicate the accumulator with the first chamber to cushion movement of the at least one actuator.

Hydraulic System Having A Pressure Compensator

US Patent:
7204084, Apr 17, 2007
Filed:
Oct 29, 2004
Appl. No.:
10/975413
Inventors:
Pengfei Ma - Naperville IL, US
Jiao Zhang - Naperville IL, US
Assignee:
Caterpillar Inc - Peoria IL
Shin Caterpillar Mitsubishi Ltd.
International Classification:
F15B 13/04
F15B 13/08
US Classification:
60422, 60459, 91446
Abstract:
A hydraulic system for a work machine is disclosed. The hydraulic system has a source of pressurized fluid and a fluid actuator with a first chamber and a second chamber. The hydraulic system also has a first valve configured to selectively fluidly communicate the source with the first chamber and a second valve configured to selectively fluidly communicate the source with the second chamber. The hydraulic system further has a proportional pressure compensating valve configured to control a pressure of a fluid directed between the source and the first and second valves.

Hydraulic System Having A Pressure Compensator

US Patent:
7204185, Apr 17, 2007
Filed:
Apr 29, 2005
Appl. No.:
11/117385
Inventors:
Pengfei Ma - Naperville IL, US
Gene Richard St. Germain - Plainfield IL, US
Jiao Zhang - Naperville IL, US
Aleksandar M. Egelja - Naperville IL, US
Robert Scot Lehmann - Dunlap IL, US
Michael A. Sorokine - Naperville IL, US
Assignee:
Caterpillar Inc - Peoria IL
Shin Caterpillar Mitsubishi Ltd
International Classification:
F15B 13/04
US Classification:
91446, 91454
Abstract:
A hydraulic system having a source of pressurized fluid and a fluid actuator with a first chamber and a second chamber. The hydraulic system also has a first valve configured to selectively fluidly communicate the source with the first chamber and a second valve configured to selectively fluidly communicate the source with the second chamber. The hydraulic system also has a supply passageway and a signal passageway each disposed between the first and second valves in parallel. The hydraulic system also has a proportional pressure compensating valve configured to control a pressure of a fluid directed between the source and the first and second valves. The hydraulic system further has a fluid passageway disposed between the supply and signal passageways to fluidly communicate the supply and signal passageways.

Valve Gradually Communicating A Pressure Signal

US Patent:
7243493, Jul 17, 2007
Filed:
Apr 29, 2005
Appl. No.:
11/117384
Inventors:
Pengfei Ma - Naperville IL, US
Jiao Zhang - Naperville IL, US
Jeff L. Kuehn - Metamora IL, US
Kalpesh N. Patel - Romeoville IL, US
Assignee:
Caterpillar Inc - Peoria IL
Shin Caterpillar Mitsubishi Ltd
International Classification:
F15B 13/04
US Classification:
60450, 91454, 13762525
Abstract:
A valve is provided for a hydraulic system having a source of pressurized fluid, a fluid actuator, and a proportional pressure compensating valve. The valve has a bore in fluid communication with the source and the fluid actuator. The valve also has a valve element disposed in the bore and movable between a flow blocking position and a flow passing position to selectively fluidly communicate the source with the fluid actuator. The valve also has a valve signal passageway disposed within the valve element and configured to be in fluid communication with a pressurized fluid having a signal pressure indicative of pressure supplied to the fluid actuator. The valve further has first and second orifices disposed within the valve element in fluid communication with the valve signal passageway and the bore. The valve signal passageway is configured to communicate the signal pressure with the first and second orifices. Movement of the valve element from the flow blocking position to the flow passing position fluidly communicates the first orifice with a system signal passageway before the second orifice, and fluidly communicates both the first and second orifices with the system signal passageway when the valve element is in the flow passing position.

Independent Metering Valve Control System And Method

US Patent:
7251935, Aug 7, 2007
Filed:
Aug 31, 2005
Appl. No.:
11/214905
Inventors:
Jiao Zhang - Naperville IL, US
Pengfei Ma - Naperville IL, US
Aleksandar Egelja - Naperville IL, US
Michael T. Verkuilen - Metamora IL, US
Assignee:
Caterpillar Inc - Peoria IL
Shin Caterpillar Mitsubishi Ltd
International Classification:
F16D 31/02
F15B 13/04
US Classification:
60461, 91454
Abstract:
A hydraulic control system has an actuator with first and second chambers, first and second valves having elements movable to fill and drain the first and second chambers, and at least one sensor configured to generate a load signal indicative of a load on the fluid actuator. The system has an interface device movable to generate a desired velocity signal of the actuator. The system has a controller in communication with the first and second valves, the at least one sensor, and the interface device. The controller is configured to move the element of the first valve to a position based on the desired velocity signal and to move the element of the second valve to a position based on the load signal and a desired pressure within the second chamber.

Hydraulic System For Recovering Potential Energy

US Patent:
7269944, Sep 18, 2007
Filed:
Sep 30, 2005
Appl. No.:
11/239394
Inventors:
Jiao Zhang - Naperville IL, US
Pengfei Ma - Naperville IL, US
Michael Schwab - Crest Hill IL, US
Kalpesh N. Patel - Romeoville IL, US
Tonglin Shang - Bolingbrook IL, US
Assignee:
Caterpillar Inc. - Peoria IL
Shin Caterpillar Mitsubishi Ltd.
International Classification:
F16D 31/02
US Classification:
60414, 60416
Abstract:
A hydraulic system may include a hydraulic actuator. The hydraulic system may also include a pump having a pump inlet and a pump outlet, and the pump may be configured to supply fluid to the hydraulic actuator. The hydraulic system may further include an energy recovery system operatively connected between the hydraulic actuator and the pump. The energy recovery system may be configured to store fluid from the hydraulic actuator under an overrunning load condition, and the stored fluid may be directed through the pump inlet and into the hydraulic actuator.

Hydraulic System Having A Post-Pressure Compensator

US Patent:
7302797, Dec 4, 2007
Filed:
May 31, 2005
Appl. No.:
11/139689
Inventors:
Jiao Zhang - Naperville IL, US
Pengfei Ma - Naperville IL, US
Michael R. Schwab - Crest Hill IL, US
Assignee:
Caterpillar Inc. - Peoria IL
Shin Caterpillar Mitsubishi Ltd
International Classification:
F15B 13/04
F15B 11/08
B66C 13/00
US Classification:
60422, 91447, 91464
Abstract:
A hydraulic system for a work machine is disclosed. The hydraulic system has a reservoir configured to hold a supply of fluid and a source configured to pressurize the fluid. The hydraulic system also has a fluid actuator, a first valve, and a second valve. The first valve is configured to selectively fluidly communicate the source with the fluid actuator to facilitate movement of the fluid actuator in a first direction. The second valve is configured to selectively fluidly communicate the fluid actuator with the reservoir to facilitate movement of the fluid actuator in the first direction. The hydraulic system further has a proportional pressure compensating valve configured to control a pressure of a fluid directed between the fluid actuator and the reservoir.

Possible Relatives

David V Ma  D C Ma  Debbie N Ma  Danny K Ma  Dao N Ma  Derek T Ma  Dat J Ma  Pengfei Z Li  Pengfei Liu  Pengfei W Xu 

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