Joe Chris Machuca, Age 513058 Berkshire Ct, Milford, MI 48380
Joe Machuca Phones & Addresses
3058 Berkshire Ct, Milford, MI 48380 (585) 766-3851
90 Quentin Rd, Rochester, NY 14609
662 Elmwood Ave, Rochester, NY 14620
Pecos, TX
Honeoye Falls, NY
Lubbock, TX
Mentions for Joe Chris Machuca
Publications & IP owners
Us Patents
System Stability And Performance Improvement With Anode Heat Exchanger Plumbing And Re-Circulation Rate
US Patent:
7919209, Apr 5, 2011
Filed:
Feb 19, 2007
Appl. No.:
11/676438
Inventors:
Joe C. Machuca - Rochester NY, US
Abdullah B. Alp - West Henrietta NY, US
Abdullah B. Alp - West Henrietta NY, US
Assignee:
GM Global Technology Operations LLC - Detroit MI
International Classification:
H01M 8/00
US Classification:
429400, 429435
Abstract:
A fuel cell system that increases stack stability by reducing the amount of liquid water droplets at the anode input of a fuel cell stack in the system. Re-circulated anode exhaust gas from the fuel cell stack and fresh hydrogen gas are sent to an anode heat exchanger so that both the fresh hydrogen gas and the re-circulated anode exhaust gas are heated to reduce the formation of water droplets in the anode input gas. Further, a portion of the heated cooling fluid directly from the fuel cell stack is sent to the heat exchanger to heat the fresh hydrogen gas and the re-circulation hydrogen before the cooling fluid is sent to an isolation heat exchanger to have its temperature reduced.
Assisted Stack Anode Purge At Start-Up Of Fuel Cell System
US Patent:
8057942, Nov 15, 2011
Filed:
Oct 18, 2007
Appl. No.:
11/874317
Inventors:
Joe C. Machuca - Rochester NY, US
Charles Mackintosh - Victor NY, US
Gary M. Robb - Honeoye Falls NY, US
Steven G. Goebel - Victor NY, US
Charles Mackintosh - Victor NY, US
Gary M. Robb - Honeoye Falls NY, US
Steven G. Goebel - Victor NY, US
Assignee:
GM Global Technology Operations LLC - Detroit MI
International Classification:
H01M 8/04
US Classification:
429429, 429444, 429458
Abstract:
A fuel cell system that enables an assisted anode purge upon start-up is provided. The fuel cell system includes a fuel cell stack having a plurality of fuel cells with anodes and cathodes. The fuel cell stack has an anode supply manifold and an anode exhaust manifold in fluid communication with the anodes. The fuel cell system further includes a suction device in fluid communication with at least one of the anode supply manifold and the anode exhaust manifold. The suction device adapted to selectively draw a partial vacuum on the fuel cell stack during a start-up of the fuel cell system. Methods for starting the fuel cell system are also provided.
Assisted Stack Anode Purge At Start-Up Of Fuel Cell System
US Patent:
8450025, May 28, 2013
Filed:
Oct 3, 2011
Appl. No.:
13/251526
Inventors:
Joe C. Machuca - Rochester NY, US
Charles Mackintosh - Victor NY, US
Gary M. Robb - Honeoye Falls NY, US
Steven G. Goebel - Victor NY, US
Charles Mackintosh - Victor NY, US
Gary M. Robb - Honeoye Falls NY, US
Steven G. Goebel - Victor NY, US
Assignee:
GM Global Technology Operations LLC - Detroit MI
International Classification:
H01M 8/04
US Classification:
429458, 429429, 429444
Abstract:
A fuel cell system that enables an assisted anode purge upon start-up is provided. The fuel cell system includes a fuel cell stack having a plurality of fuel cells with anodes and cathodes. The fuel cell stack has an anode supply manifold and an anode exhaust manifold in fluid communication with the anodes. The fuel cell system further includes a suction device in fluid communication with at least one of the anode supply manifold and the anode exhaust manifold. The suction device adapted to selectively draw a partial vacuum on the fuel cell stack during a start-up of the fuel cell system. Methods for starting the fuel cell system are also provided.
Control Apparatus To Improve Start-Up Time In A Pem Fuel Cell Power Module
US Patent:
2006009, May 11, 2006
Filed:
Nov 5, 2004
Appl. No.:
10/982304
Inventors:
Mark Meltser - Pittsford NY, US
Joe Machuca - Rochester NY, US
Abdullah Alp - Rochester NY, US
Stephen Farris - Rochester NY, US
Joe Machuca - Rochester NY, US
Abdullah Alp - Rochester NY, US
Stephen Farris - Rochester NY, US
International Classification:
H01M 8/04
US Classification:
429024000, 429026000, 429039000, 429013000
Abstract:
A fuel cell system that uses compressed and heated cathode input air to heat the fuel cell stack at system start-up. The system includes a heat exchanger that uses the system cooling fluid to cool the compressed and heated cathode input air before it is sent to the fuel cell stack. At system start-up, a proportional by-pass valve directs a controlled portion of the cooling fluid around the heat exchanger so that the heated cathode input air can be used to heat the fuel cell stack. Once the stack reaches its operating temperature, the by-pass valve does not by-pass the heat exchanger. The fuel cell system also includes an inlet air valve that is used to choke the compressor at system start-up to cause the compressor to rapidly heat the compressed air.
System Stability Improvements Tolerating Increased Nitrogen Cross-Over
US Patent:
2007001, Jan 18, 2007
Filed:
Jul 13, 2005
Appl. No.:
11/180865
Inventors:
Abdullah Alp - Rochester NY, US
Joe Machuca - Rochester NY, US
Joe Machuca - Rochester NY, US
International Classification:
H01M 8/04
US Classification:
429022000, 429013000
Abstract:
A control strategy for removing nitrogen from the anode side of a fuel cell stack. The control strategy includes using a bleed valve to remove the nitrogen during the operation of the fuel cell stack until the stack ages to a point where the bleed valve is maintained open, but the concentration of nitrogen in the anode side of the stack continues to increase. Once the concentration of nitrogen in the anode side increases to a predetermined level, then a purge valve is opened in combination with the bleed valve to reduce the concentration of nitrogen. Once the nitrogen concentration is reduced below the level, then both valves are closed, and the sequence is repeated.
In-Situ Fuel Cell Stack Reconditioning
US Patent:
2011009, Apr 21, 2011
Filed:
Oct 16, 2009
Appl. No.:
12/580863
Inventors:
Daniel T. Folmsbee - Victor NY, US
Balasubramanian Lakshmanan - Pittsford NY, US
John P. Salvador - Penfield NY, US
Joe C. Machuca - Rochester NY, US
Bernd Krause - Liederbach, DE
David R. Savage - Rochester NY, US
David A. Arthur - Honeoye Falls NY, US
Derek R. Lebzelter - Rochester NY, US
Balasubramanian Lakshmanan - Pittsford NY, US
John P. Salvador - Penfield NY, US
Joe C. Machuca - Rochester NY, US
Bernd Krause - Liederbach, DE
David R. Savage - Rochester NY, US
David A. Arthur - Honeoye Falls NY, US
Derek R. Lebzelter - Rochester NY, US
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS, INC. - DETROIT MI
International Classification:
H01M 8/00
US Classification:
429413, 429452
Abstract:
A method for reconditioning a fuel cell stack. The method includes periodically increasing the relative humidity level of the cathode input airflow to the stack to saturate the cell membrane electrode assemblies to be greater than the relative humidity levels during normal stack operating conditions. The method also includes providing hydrogen to the anode side of the fuel cell stack at system shut down while the membrane electrode assemblies are saturated without stack loads being applied so that the hydrogen crosses the cell membranes to the cathode side and reacts with oxygen to reduce stack contaminants.
Utilization Of Hfr-Based Cathode Inlet Rh Model In Comparison To Sensor Feedback To Determine Failed Water Vapor Transfer Unit And Utilize For A Diagnostic Code And Message
US Patent:
2013003, Feb 7, 2013
Filed:
Aug 3, 2011
Appl. No.:
13/197535
Inventors:
Todd K. Preston - Rochester NY, US
Sergio E. Garcia - Webster NY, US
Joe C. Machuca - Rochester NY, US
Sergio E. Garcia - Webster NY, US
Joe C. Machuca - Rochester NY, US
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC - Detroit MI
International Classification:
G06F 15/00
US Classification:
702183
Abstract:
A system and method for determining whether there is a cross-over leak, or other failure, in a WVT unit that humidifies the cathode inlet airflow to a fuel cell stack in a fuel cell system. The fuel cell system includes an HFR circuit that determines the humidity level of the membranes in the fuel cell stack and an RH sensor that measures the relative humidity of the airflow to the cathode side of the fuel cell stack. The HFR humidity calculation is compared to RH measurements from the RH sensor, and if the difference between the two RH values is greater than a predetermined calibration value, then the system may determine that the WVT unit is failing and needs to be serviced or replaced.
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