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公开(公告)号：US10746134B2
公开(公告)日：2020-08-18
申请号：US15825675
申请日：2017-11-29
发明人： Suk Il Park , Jeong Hyun Na , Young Kyung Choi , Young Hwan Kim , Seung Il Moon , Jong Gyun Kim
IPC分类号： F02M25/022 , F02M25/028 , F02D41/00 , F02D41/20
摘要： A water injection system for spraying water toward an intake system of an engine is disclosed. The water injection system includes a water collection circuit that has a water collection pipe for collecting water from the intake system and a drain valve installed on the water collection pipe. The water collection circuit collects water from the intake system of the engine by opening the drain valve when amount of stagnant water in the intake system reaches a predetermined threshold.
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公开(公告)号：US11524571B2
公开(公告)日：2022-12-13
申请号：US17026754
申请日：2020-09-21
发明人： Kee Hoon Moon , Jong Gyun Kim
摘要： A liquid level detecting apparatus of a tank for a vehicle is provided. The apparatus includes a main detecting part that detects the liquid level of the liquid in a tank to output a liquid level detection signal corresponding to the liquid level and an auxiliary floater assembly that has an auxiliary floater provided to float on the liquid surface of the liquid in the tank. A gyro sensor is mounted to the auxiliary floater, and an angle detection signal corresponding to an inclined angle of the tank is output by the gyro sensor. A controller determines a final liquid level value by correcting a liquid level value obtained from the liquid level detection signal based on the angle detection signal.
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公开(公告)号：US10697364B2
公开(公告)日：2020-06-30
申请号：US16123762
申请日：2018-09-06
发明人： Suk Il Park , Jeong Hyun Na , Young Kyung Choi , Young Hwan Kim , Seung Il Moon , Jong Gyun Kim
IPC分类号： F02B47/02 , F02M25/022 , F02M25/028 , F02D19/12 , F02D41/00 , F02D41/20 , F02M25/025
摘要： A method for controlling an engine system, may include a water injection operation of injecting water into an intake system of an engine through a water injector of a water injection system in a first operating condition of the engine in which water injection is required, a compressed air injection operation of injecting compressed air into the intake system through a purge circuit of the water injection system in a second operating condition of the engine in which compressed air injection is required, and a water injection stop operation of stopping the water injection of the water injection system in a third operating condition of the engine in which water injection stop is required.
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公开(公告)号：US11515549B2
公开(公告)日：2022-11-29
申请号：US16994876
申请日：2020-08-17
发明人： Seong Cheol Jeong , Jong Gyun Kim , Dae Jong Kim , Jae Won Jung
IPC分类号： H01M8/04 , H01M8/04537 , H01M8/04313 , H01M8/04014
摘要： The present disclosure relates to a method of recovering performance of a fuel cell stack in a fuel cell system of a vehicle. The method includes determining whether the fuel cell stack is in a state in which a stack performance recovery operation is possible based on information collected from the vehicle using a predetermined stack state determination criterion, determining whether the vehicle is in a state in which the stack performance recovery operation is possible based on operation information of a fuel cell system, and performing the stack performance recovery operation upon determining that the fuel cell stack is in the state in which the stack performance recovery operation is possible and that the vehicle is in the state in which the stack performance recovery operation is possible.
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公开(公告)号：US20210143457A1
公开(公告)日：2021-05-13
申请号：US16912155
申请日：2020-06-25
发明人： Seong Cheol Jeong , Hyo Jin Park , Soon Gil Kweon , Jong Gyun Kim
IPC分类号： H01M8/04664 , H01M8/04225 , H01M8/04302
摘要： The present disclosure relates to an apparatus and method for diagnosing a failure in a fuel cell system. To prevent degradation of a fuel cell stack due to abnormal supply of hydrogen, the apparatus includes a first pressure sensor that measures pressure of hydrogen supplied into the fuel cell stack, a second pressure sensor that measures the pressure of the hydrogen supplied into the fuel cell stack, and a controller that first diagnoses a supply state of the hydrogen based on a first pressure value measured by the first pressure sensor and a second pressure value measured by the second pressure sensor, and further diagnoses the supply state of the hydrogen based on an absolute value of a difference between the first pressure value and the second pressure value.
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公开(公告)号：US20210107351A1
公开(公告)日：2021-04-15
申请号：US17026754
申请日：2020-09-21
发明人： Kee Hoon Moon , Jong Gyun Kim
摘要： A liquid level detecting apparatus of a tank for a vehicle is provided. The apparatus includes a main detecting part that detects the liquid level of the liquid in a tank to output a liquid level detection signal corresponding to the liquid level and an auxiliary floater assembly that has an auxiliary floater provided to float on the liquid surface of the liquid in the tank. A gyro sensor is mounted to the auxiliary floater, and an angle detection signal corresponding to an inclined angle of the tank is output by the gyro sensor. A controller determines a final liquid level value by correcting a liquid level value obtained from the liquid level detection signal based on the angle detection signal.
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公开(公告)号：US20230378497A1
公开(公告)日：2023-11-23
申请号：US17948474
申请日：2022-09-20
发明人： Jong Gyun Kim
IPC分类号： H01M8/04664 , H01M8/04225 , H01M8/0438 , H01M8/04746 , H01M8/04955
CPC分类号： H01M8/04671 , H01M8/04225 , H01M8/04388 , H01M8/04753 , H01M8/04955
摘要： An embodiment hydrogen supply system includes a fuel cell, a hydrogen supply line connected to an inlet side of an anode of the fuel cell, a discharge valve provided on an outlet side of the anode of the fuel cell to discharge exhaust gas of the anode of the fuel cell to an outside, and a controller configured to perform a hydrogen-line inspection mode to determine whether there is a leak in the fuel cell or the hydrogen supply line by cutting off air supply to the fuel cell, supplying hydrogen through the hydrogen supply line, and blocking the discharge valve, and opening the discharge valve to determine whether the discharge valve is defective in response to a determination that the fuel cell and the hydrogen supply line are normal.
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公开(公告)号：US11588159B2
公开(公告)日：2023-02-21
申请号：US17463184
申请日：2021-08-31
发明人： Seong Cheol Jeong , Jae Won Jung , Jong Gyun Kim
IPC分类号： H01M8/04 , H01M8/04029 , H01M8/04858
摘要： A control system and method for preventing a fuel cell from overheating are disclosed. The system includes: a fuel cell that generates electric power through reaction of fuel gas and oxidation gas; a cooling line in which a cooling medium flows and performs heat exchange with the fuel cell; a cooling pump installed on the cooling line and configured to circulate the cooling medium through the cooling line; a cooling controller that controls an operating state of the cooling pump on the basis of the temperature of the fuel cell or the cooling medium; and a power generation controller that limits power generation of the fuel cell on the basis of the operating state of the cooling pump.
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公开(公告)号：US11757113B2
公开(公告)日：2023-09-12
申请号：US17462669
申请日：2021-08-31
发明人： Seong Cheol Jeong , Jong Gyun Kim , Jun Young Park
IPC分类号： H01M8/04537 , H01M8/04746 , H01M8/0438 , H01M8/04119 , G01L27/00 , H01M8/04302
CPC分类号： H01M8/04302 , H01M8/04119 , H01M8/04559 , H01M8/04753
摘要： Provided are a method and system for correcting an offset of a hydrogen pressure sensor. The method includes constantly supplying the hydrogen to the fuel cell stack, determining whether an offset of the hydrogen pressure sensor needs to be corrected based on a stop time before the fuel cell stack starts and a magnitude of an output voltage of the fuel cell stack, calculating an offset correction value when the offset of the hydrogen pressure sensor needs to be corrected, and correcting the offset of the hydrogen pressure sensor and performing the starting of the fuel cell stack.
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公开(公告)号：US20230268527A1
公开(公告)日：2023-08-24
申请号：US17893346
申请日：2022-08-23
发明人： Young Man Lee , Jong Gyun Kim
IPC分类号： H01M8/04223 , H01M8/04225 , H01M8/04302 , H01M8/0432 , H01M8/04701
CPC分类号： H01M8/04268 , H01M8/04225 , H01M8/04302 , H01M8/04358 , H01M8/04701 , H01M2250/20
摘要： A cold start control method and system for fuel cell vehicles determines when the fuel cell vehicle is started, whether the fuel cell vehicle enters a cold start mode. An estimated time estimated to be required until the stopped vehicle coolant temperature, which is measured in a state in which the fuel cell vehicle is stopped before being started, reaches a reference temperature is derived. The required time required from a point in time at which the stopped vehicle coolant temperature is measured to a point in time at which the fuel cell vehicle enters the cold start mode is derived. A target heating value is corrected according to a ration between the estimated time and the required time to derive a final target heating value. The heating value of the fuel cell stack is caused to reach the final target heating value.
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