Pettit William H (Total 177 Patents Found)

A fuel processor system capable of circulating fuel processor system gases, such as reformate, anode exhaust, and/or combustor exhaust, through the fuel processor to provide a number of distinct advantages. The fuel processor system having a plurality of fuel cells discharging an H 2 -containing anode effluent and an O...
A fuel processor for rapid start and operational control. The fuel processor includes a reformer, a shift reactor, and a preferential oxidation reactor for deriving hydrogen for use in creating electricity in a plurality of H 2 —O 2 fuel cells. A heating and cooling mechanism is coupled to at least the shift reactor...
Control of a fuel rate and an air rate delivered to an exhaust gas heater over successive control periods by determining and periodically updating a desired heater air quantity and a desired heater air/fuel ratio, by commanding an air rate in accord with the desired heater air quantity, by adjusting the commanded air r...
Clearance gaps in the inactive feed regions of a fuel cell stack are controlled by non-bonded, non-nested bipolar plates to provide reactant flow uniformity and pressure within fuel cells and fuel cell stacks utilizing nested bipolar plates in the active feed regions and non-nested bipolar plates in the inactive feed r...
A burner type catalytic converter heater composed of an air intake housing having a peripheral mounting flange for universal mounting to an exhaust system upstream of the catalytic converter. A nozzle body is provided having a central portion whereat an orifice delivers atomized fuel and an annular flange portion which...
A fuel processor system capable of circulating fuel processor system gases, such as reformate, anode exhaust, and/or combustor exhaust, through the fuel processor to provide a number of distinct advantages. The fuel processor system having a plurality of fuel cells discharging an H 2 -containing anode effluent and an O...
An improved fuel processor thermal management system for use with a fuel cell is disclosed. The process includes supplying an air stream and a fuel stream into a auto thermal reactor (ATR) and forming reformate gas therein. Then, preferentially oxidizing the reformate gas and the air stream in the preferential oxidizer...
A vaporizer is provided for vaporizing liquid in a fluid stream. The vaporizer includes at least two heat exchangers serially arranged in a direction of flow of the fluid stream through the vaporizer for vaporizing liquid in the fluid stream in stages. The heat exchangers each comprise a first plurality of thermally co...
A fuel cell system that employs a method for determining the potential that a freeze condition will exist after the system is shut-down based on predetermined input, such as ambient temperature, geographical location, user usage profile, date, weather reports, etc. If the system determines that a freeze condition is pr...
Es ist eine Brennstoffzellenplattenanordnung offenbart, die eine erste Platte umfasst, die eine Vielzahl von Ausstülpungen aufweist, die in einem Boden von daran geformten Strömungskanälen geformt sind, wobei die Ausstülpungen an einem Boden von an einer zweiten Platte geformten Strömungskanälen anliegen, wenn di...
A fuel processor control system for a fuel cell stack includes water and fuel metering devices that control water and fuel provided to the fuel processor. An air flow rate sensor generates an air flow rate signal based on air flowing from a compressor to the fuel processor. A valve is located between the fuel processor...
本发明涉及消除偏置的燃料电池板的冲压金属流场中的顺应填料区域。公开了一种燃料电池板组件,包括第一板,第一板具有多个隆起,其形成在第一板的流动通道的底部,其中,当第一板和第二板彼此相邻放置时,隆起邻接第二板的流动通...
A fuel processor control system for a fuel cell stack (52) includes water and fuel metering devices (60) and a fuel metering devices (76)that control water and fuel provided to the fuel processor (54). An air flow rate sensor (70) generates an air flow rate signal based on air flowing from a compressor (64) to the fuel...
A fuel cell plate assembly is disclosed that comprises a first plate having a plurality of protuberances formed in a bottom of flow channels formed thereon, wherein the protuberances abut a bottom of flow channels formed on a second plate when the first plate and the second plate are disposed adjacent one another....
A fuel cell stack assembly is disclosed that includes a porous member disposed within a flow path for a reactant. A fluid collection member is provided within the flow path adjacent to and in fluid communication with the porous member. The porous member and the fluid collection member cooperate to collect liquid water ...
A self-learning assisted hybrid vehicle system that includes a main power source for providing power to the vehicle, a supplemental power source for providing supplemental power for providing power to the vehicle and an electric motor or other mechanical system for driving the vehicle. The system also includes a self-l...
Systems and methods are disclosed that provide for a bipolar plate for a fuel cell system that includes cross flow channels facilitating reactant flow between primary reactant flow channels. In certain embodiments, the cross flow channels may allow for improved reactant flow distribution across catalyst layers of the f...
The present invention provides for a method and apparatus for hydrogen detection and dilution. The present invention uses an enclosure within which a variety of components of a fuel cell system are located and a ventilation stream to vent the enclosure which is induced by operation of a compressor that also is operable...
A stand-alone fuel processor ( 10 ) for producing hydrogen from a hydrocarbon fuel for a fuel cell engine in a vehicle. The fuel processor ( 10 ) includes a primary reactor ( 14 ) that dissociates hydrogen and other by-products from the hydrocarbon fuel as a reformate gas. The reformate gas is applied to a WGS reactor ...
A fuel processor system includes first and second reactors each having an inlet that receives fuel from a fuel supply and an outlet that discharges a reformate containing hydrogen. The reactors are operable to reform the fuel to form the reformates. The second reactor is coupled in parallel with the first reactor with ...
A fuel processor system capable of circulating fuel processor system gases, such as reformate, anode exhaust, and/or combustor exhaust, through the fuel processor to provide a number of distinct advantages. The fuel processor system having a plurality of fuel cells discharging an H 2 -containing anode effluent and an O...
A compact autothermal (partial oxidation and steam reforming) fuel reactor is provided for implementation with a fuel cell system. The reactor includes a premixing chamber for premixing a volume of air, steam and fuel into an effluent, a thermal POX reactor, a first stage reforming segment, a post-premix chamber, and a...
In one aspect, the present invention provides a method for operating a fuel cell system. The system comprises a reactor having one or more catalytic beds and is fed a hydrocarbon fuel along with air and steam. Where more than one catalytic bed is present, such catalytic beds are preferably arranged sequentially such th...
An autothermal reformer (10) is provided for a fuel cell system utilizing one volume (22) and a plurality of inlets (16, 18) for both start-up and normal operation. In start-up mode, thermal combustion is employed for heating the catalyst reformation section (52) of the reformer (10). First two inlets (20, 24) are used...
A preferential oxidation reactor (10) is provided including a plurality of reactor sections (12, 14, 16). The reactor sections are individually optimized for operating at a preferred reaction temperature. In one embodiment, each reactor section includes a respective coolant flow (24, 26, 28) for manipulating the operat...
A fuel cell system that includes an over-arching algorithm for providing a strategy that reduces relative humidity cycling of the cathode outlet gas between wet and dry operation to extend the useful life of the membrane. The algorithm receives sensor signals indicative of operating parameters of the fuel cell system. ...
L'invention concerne un système de traitement de carburant capable de faire circuler des gaz de système de traitement de carburant, tel que du reformat, un échappement d'anode, et/ou un échappement de chambre de combustion, à travers ledit dispositif de traitement de carburant pour produire plusieurs avant...
A method to produce a catalytic bed is initiated by forming apertures in a predetermined pattern on a strip or segment of thin foil. A pattern of desired channels is formed into the apertured foil, for example, as a herringbone pattern. The patterned foil is heat treated, and the surfaces of the foil are provided with ...
The present invention relates to controlled staged rich combustion throughout a fuel processing system in order to improve start up performance. Multiple stages of air injection are used to burn rich combustion products within each component to provide direct heating thereof. During the start up cycle, the fluid temper...
Ein Brennstoffzellensystem, das ein Verfahren zum Bestimmen des Potentials, dass ein Gefrierzustand vorhanden ist, nachdem das System abgeschaltet ist, auf Grundlage eines vorbestimmten Eingangs, wie Umgebungstemperatur, geografischem Ort, Anwendergebrauchsprofil, Datum, Wetterberichte etc., verwendet. Wenn das System ...
本发明涉及PEM燃料电池中的膜渗透调整,提供了一种用于修正燃料电池堆阳极侧中的氮气估计的系统和方法。该系统包括燃料电池堆和用于测量阳极子系统中压力的压力传感器。该系统还包括构造成控制从电池堆阴极侧向阳极侧的氮气渗透估...
A device and method for operating a fuel cell system. The device includes a combustor that is configured to combine reactants used in the fuel cell in such a way as to produce an inert fluid used to inert electrodes within the fuel cell. The device also includes componentry to permit purging of the electrodes subsequen...
A method for designing a fuel processor having an optimized size (i.e., volume and mass) for use in a fuel cell system which provides electrical power in a plurality of power ranges. The method includes maximizing water availability in the fuel cell system and sizing the first CO reduction reactor to provide for peak f...
An apparatus removes carbon monoxide (CO) from a hydrogen-rich gas stream in a hydrogen fuel cell system. CO fouls costly catalytic particles in the membrane electrode assemblies of proton exchange membrane (PEM) fuel cells. A vessel houses a carbon monoxide adsorbent. The vessel may be a rotating pressure swing adsorb...
A preferential oxidation reactor is provided including a plurality of reactor sections. The reactor sections are individually optimized for operating at a preferred reaction temperature. In one embodiment, each reactor subsection includes a respective coolant flow for manipulating the operating temperature of the respe...
PROBLEM TO BE SOLVED: To provide a low-cost, light-weight system for supplying heat to a fuel cell reforming process. SOLUTION: Equipped with an integrated reaction vessel 54, the fuel system 10 balances an endothermic process at least with one of the exothermic processes. Preferably, the exothermic process is to be pe...
An apparatus removes carbon monoxide (CO) from a hydrogen-rich gas stream in a hydrogen fuel cell system. CO fouls costly catalytic particles in the membrane electrode assemblies of proton exchange membrane (PEM) fuel cells. A vessel houses a carbon monoxide adsorbent. The vessel may be a rotating pressure swing adsorb...
A primary reactor for a fuel processor system that employs steam and air to convert a liquid hydrocarbon fuel into a hydrogen-rich gas stream. The liquid fuel and an air-steam mixture are mixed in a mixing region within the reactor. The fuel mixture is then directed through an electrically heated catalyst region that h...
【課題】湿潤動作と乾燥動作との間でカソード出口気体の相対湿度循環運動を低減して膜の有用な寿命を延ばすための支配アルゴリズムを備える燃料電池システムを提供する。 【解決手段】アルゴリズム24は燃料電池システム10の動...
Autothermer Reaktor zur Reformierung eines Kohlenwasserstoff-Brennstoffstroms in einen wasserstoffreichen Reformatstrom, wobei der autotherme Reaktor (14) umfasst: ein Gehäuse (30) mit einer Außenschale (50) und einer Innenschale (52); eine erste Vormischkammer (32) innerhalb des Gehäuses (30) zum Mischen des Kohl...
A stand-alone fuel processor ( 10 ) for producing hydrogen from a hydrocarbon fuel for a fuel cell engine in a vehicle. The fuel processor ( 10 ) includes a primary reactor ( 14 ) that dissociates hydrogen and other by-products from the hydrocarbon fuel as a reformate gas. The reformate gas is applied to a WGS reactor ...
(57)【要約】 【課題】 一酸化炭素含有量を、燃料電池スタックに入 る前に通常の作動条件下で減少させる。 【解決手段】 本装置は水素燃料電池システムで水素の 豊富なガスの流れから一酸化炭素(CO)を除去する。 COは、陽子交...
Randkonstruktionen, insbesondere für ePTFE-verstärkte Membranen für Protonenaustauschmembran-(PEM)-Brennstoffzellen, wobei die Konstruktionen eine Protonenbarriere an dem Elektrodenrand der Membranelektrodenanordnung (MEA) der PEM-Brennstoffzelle vorsehen, um unter anderem eine Beständigkeit gegenüber einem chemis...