Abstract:
The present invention relates to a device for joining a fuel cell stack. The purpose of the present invention is to provide a device for joining a fuel cell stack capable of reducing the number of parts, simplifying a process for joining a stack and enhancing the torsional rigidity of the stack against vehicle vibration or impact load. To achieve the purpose, the present invention provides the device for joining a fuel cell stack which comprises a joining bar for connecting two end plates at both ends of the fuel cell stack at the position of the side surface of the fuel cell stack, wherein both end parts of the joining bar are inserted and fixed to the end parts of the two end plates by a female groove having an inner inclined plane and a protrusion part which is inserted and connected to the inner side of the female groove while having an inclined plane in a reverse-tapering shape against the inclined plane of the female groove.
Abstract:
PURPOSE: A manufacturing method of prepreg is provided to solve existing various problems like graphite-residues remained in a mold, a problem not able to control a thickness of a graphite layer, etc. CONSTITUTION: A manufacturing method of prepreg comprises: a step of providing carbon long fiber-reinforced prepreg in a semi-cured sheet state which is reinforced by using a polymer resin as a base, and by a carbon material; a step of laminating a release film in which a graphite foil is coated on the prepreg; and a step of manufacturing final prepreg coated with the graphite foil by transferring the graphite foil on a surface of the prepreg through a high-temperature pressing process passing the prepreg through a hot roller(107).
Abstract:
PURPOSE: A separator for a polymer electrolyte membrane fuel cell is provided to lower electricity contact resistance and to reduce energy loss by smoothening water circulation through reaction by increasing a hydrophilic property of the separator surface. CONSTITUTION: A method for manufacturing a separator for a polymer electrolyte membrane fuel cell comprises the steps of: supplying prepreg(10) and graphite foil(11); cutting the prepreg and graphite foil in a longitudinal direction of the separator to be manufactured; compressing the cut prepreg and graphite foil; heating and pressurizing the prepreg in which graphite foil is laminated in one body to form hydrogen, air, and cooling water channels through high temperature press(22), or passing through a hot roll press to prepare a separator(30); cutting unnecessary parts from a heated and pressurized separator; and performing post-curing treatment of the manufactured separator.
Abstract:
PURPOSE: An end plate for a fuel cell stack is provided to ensure light weight and low heat loss, to maintain uniform plane pressure, and to prevent leakage of fluid and the increase of intercell electric contact resistance. CONSTITUTION: An end plate for a sandwich type fuel cell stack comprises a side(10) made of fiber-reinforcing composite materials and maintains a plane after tightening by applying curvature to the side. The side is manufactured by the steps of: symmetrically laminating reinforced fiber within the composite; and molding the laminate by any one method selected from vacuum bag molding, pressure molding and resin transfer molding.
Abstract:
PURPOSE: A separation plate for a polymer electrolyte membrane fuel cell and a method for manufacturing the same are provided to prepare a separation plate using a hot press or hot roll with relieve and intaglio fluid path pattern for forming hydrogen, air, and cooling water. CONSTITUTION: A method for manufacturing a separation plate for a polymer electrolyte membrane fuel cell comprises the steps of: preparing a raw material(10) of a long fiber reinforced composite in a semi-hardened state; forming the raw material in length and shape of the separation plate(30); attaching single or plural raw materials cut as the length of the separation plate by lamination; heating/pressing the laminate in a hot press(22); cutting unnecessary part from the heated and pressurized separation plate; and postcuring the separation plate.
Abstract:
PURPOSE: A TCU(Transmission Control Unit) and a method thereof are provided to measure supplied oil into a real clutch and to make a duty control different according to the measured oil. CONSTITUTION: A TCU of an automatic transmission comprises a gear shift detecting unit(1) to detect a gear shift by an inhibitor switch; an oil temperature detecting unit(2) to detect supplied oil according to a signal from the gear shift detecting unit(1); a hydraulic pressure detecting unit(3) to detect pressure of the supplied oil; and a control unit(4) to control the hydraulic pressure into a real clutch by discriminating a gear shift state through a signal from the inhibitor switch, to discriminate a supplied state of the oil according to a signal from the detecting units(2,3) and to output a control signal for a duty control by comparing a passed time of the gear shift with a reference passed time. The gear shift is detected. The gear shift from a neutral step to a drive step is discriminated. The temperature of the oil is compared with a reference temperature. The pressure of the oil is compared with a minimum pressure. A timer is initialized and a counting is started. A duty control of 100% is performed when the passed time is less than the reference passed time. Otherwise, the actual duty control is performed.
Abstract:
PURPOSE: A response improving device on kick down-shift and control method thereof improve the response and the change quality of the transmission of a vehicle having an automatic transmission. CONSTITUTION: A response improving device on kick downshift comprises a sensor(10) and a speed changing controller(20). The sensor(10) has a timer for detecting a delay time from the time of estimating a down-shift to the time of progressing an actual speed changing by the increase of the opening angle of a throttle valve. Only when the detected time delay is equal to or smaller than an already determined standard time, the speed changing controller(20) outputs a control signal for progressing the speed changing.
Abstract:
본 발명은 자동 변속기 오일의 워밍 업 제어 방법에 관한 것으로서, 차량의 현재 상황과 검출된 유온을 기본으로 하여 특별히 정해진 시간동안 워밍 업의 실행 여부를 결정하고, 필요시 워밍 업 실행을 제어하며, 차속이 변화되는 경우에도 속도의 변화에 의한 변속제어가 끝난후 계속해서 원하는 시간동안 워밍 업을 계속 할 수 있고, 저온상태에서 자동 변속기의 변속감을 향상시킬 수 있으며, 저온상태에서 차량의 동력전달 성능을 향상시킬 수 있는 효과가 있다.
Abstract:
본 발명은 자동변속기의 변속 제어장치 및 그 방법에 관한 것으로서, 자동 변속기를 장착한 자동차에 있어서, 차량의 주행상태 따라 차량의 상태가 가변되어 출력되어지는 신호를 인가 받아 해당하는 전기신호를 출력하는 차량 주행상태 감지수단과; 상기 차량 주행상태 감지수단에서 출력되는 신호를 인가 받아 차량의 주행상태에 따른 기존의 댐퍼 클러치 동작영역에 매뉴얼 모드 선택시 특정 설정 조건외에 다른 조건에서 댐퍼 클러치의 해방제어를 실시하지 않고 계속적인 댐퍼 클러치의 동작제어를 위한 신호를 출력하는 제어 수단과; 상기 제어수단에서 출력되는 댐퍼 클러치 제어신호에 의해 해당 솔레노이드 밸브를 구동시키는 구동수단을 포함하여 이루어져 있어, 종래의 댐퍼 클러치 동작영역 판단 조건에 새로운 매뉴얼 모드 선택시 댐퍼 클러치 동작 영역을 추가함으로서 댐퍼 클러치의 동작영역을 확대하여 특별히 설정되어 있는 조건 이외에는 항상 댐퍼 클러치를 효과적으로 동작시킨 상태에서 기본적인 변속제어를 실행함으로써, 엔진에서 출력되는 동력전달의 효율을 증대시키고, 매뉴얼 변속시 변속의 응답성 및 변속성능을 향상시킬 수 있는 효과가 있다.
Abstract:
엔진 회전수 감지부와; 터빈회전수 감지부와, 출력회전수 감지부와, 스로틀 밸브 감지부와; 시동스위치와, 모드선택 스위치와, 인히비터 스위치로 이루어진 스위치부와; 시동스위치가 설정횟수이상 발생한 경우에 자동적으로 고장코드를 소거시키거나, 고장코드의 발생부분에 따라 엔진이 정지하고, 스로틀 밸브의 개도량이 설정량이상으로 최대영역에 해당하는 경우에, 현재의 변속레버 상태와 주행모드의 상태를 판단하여 초기에 변속레버가 L단이고 주행모드가 경제모드인 경우에 카운터를 1로 설정하고, 다음 변속레버가 2단이고 경제모드인 경우에는 다시 변속레버와 주행모드를 판단하여 변속레버가 2단이고 파워모드인 경우에는 카운터를 2로 설정하고, 다음 변속레버가 3단이고 주행모드가 파워모드인 경우에는 다시 변속레버와 주행모드를 판단하여 변속레버가 3단이고 경제모드인 경우에는 카운터를 3으로 설정하고, 다음 변속레버가 4단이고 경제모드인 경우에는 다시 변속레버와 주행모드를 판단하여 변속레 버가 4단이고 파워모드인 경우에 카운터를 초기화시키므로써 고장코드를 소거시키는 자동 변속기 제어부로 이루어진 자동변속 차량의 자동변속기 고장코드 소거장치 및 그 제어방법을 제공한다.