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公开(公告)号：US20220307526A1
公开(公告)日：2022-09-29
申请号：US17524147
申请日：2021-11-11
发明人： Bong Uk Bae , Seong Min Son , Se Hwan Jo , Kyung Moo Lee
IPC分类号： F15B15/20
摘要： A hybrid vehicle control method includes: monitoring an electric oil pump (EOP) driving current in which an EOP is being driven at a predetermined target RPM, and determining whether the EOP driving current is in a predetermined reference range in which it possible to estimate a situation in which the EOP suctions air; determining whether a measured hydraulic pressure at a place receiving oil supplied by the EOP is less than reference hydraulic pressure when the EOP driving current is in the predetermined reference range; and temporarily decreasing line pressure and increasing an RPM of the EOP.
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公开(公告)号：US11643952B2
公开(公告)日：2023-05-09
申请号：US17730762
申请日：2022-04-27
发明人： Bong Uk Bae , Se Hwan Jo , Ki Bum Kim , Jin Young Hwang , Seong Min Son
CPC分类号： F01M1/16 , F01M1/02 , F01M1/20 , F01M2001/0215 , F01M2250/60
摘要： A method of controlling an electric oil pump (EOP) for a vehicle includes, if a current temperature of oil is lower than a reference temperature, determining whether an EOP RPM is lower than a minimum driving RPM, if the EOP RPM is lower than the minimum driving RPM, applying a first reduction rate for a first setting time and reducing a target line pressure and an instruction RPM of the EOP, if the EOP RPM is equal to or higher than the minimum driving RPM, determining whether vibration of the EOP RPM is generated above a reference vibration, and if the vibration is generated above the reference vibration, applying a second reduction rate for a second setting time and reducing the target line pressure or the instruction RPM of the EOP.
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公开(公告)号：US11754172B2
公开(公告)日：2023-09-12
申请号：US17379028
申请日：2021-07-19
发明人： Se Hwan Jo , Seong Min Son , Kyung Moo Lee , Bong Uk Bae
CPC分类号： F16H57/0476 , B60K6/22 , F16H57/0413 , F16H57/0435 , F16H57/0436 , F16H57/0473 , B60K2001/003
摘要： A powertrain-cooling system of a hybrid vehicle may include an electric oil pump, a pressure control valve, which includes an input port receiving fluid discharged from the electric oil pump, an output port outputting the fluid to a transmission while adjusting the pressure of the fluid, and a drain port discharging a portion of the fluid in accordance with adjustment of the pressure of the fluid, a first motor cooling path connecting the drain port of the pressure control valve to a first motor forming a hybrid powertrain, and a controller electrically connected to the electric oil pump and configured for controlling the electric oil pump to cool the transmission and the first motor.
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公开(公告)号：US11614162B2
公开(公告)日：2023-03-28
申请号：US17734537
申请日：2022-05-02
发明人： Bong Uk Bae , Se Hwan Jo , Seong Min Son , Ki Bum Kim , Jin Young Hwang , Kyung Moo Lee
摘要： A method of controlling an electric oil pump (EOP) of a vehicle includes: confirming a gear shift type when a gear shift of a vehicle is started; compensating for the number of revolutions of the EOP according to the confirmed gear shift type; confirming whether a measured line pressure converges on a command line pressure while the compensating for the number of revolutions of the EOP according to the gear shift type is performed; and, when it is determined that the measured line pressure does not converge on the command line pressure, additionally compensating for the number of revolutions of the EOP.
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公开(公告)号：US11578796B2
公开(公告)日：2023-02-14
申请号：US17511832
申请日：2021-10-27
发明人： Kyung Moo Lee , Seong Min Son , Se Hwan Jo , Bong Uk Bae
摘要： A method for controlling an electric oil pump (EOP) of a hybrid vehicle may include determining whether or not the hybrid vehicle is in a decelerating situation in an EV mode, driving the EOP at an RPM at a point L, corresponding to a minimum RPM of the EOP to form a target line pressure of a transmission, upon determining that the hybrid vehicle is decelerating in the EV mode, determining whether or not an RPM of a turbine is equal to or greater than a predetermined reference RPM, and driving the EOP at an RPM acquired by adding a predetermined additional RPM to secure an additional flow rate of automatic transmission fluid supplied to a balance chamber of an engine clutch to the RPM at the point L, upon determining that the RPM of the turbine is equal to or greater than the predetermined reference RPM.
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公开(公告)号：US12007018B2
公开(公告)日：2024-06-11
申请号：US17744193
申请日：2022-05-13
发明人： Jin Young Hwang , Bong Uk Bae , Ki Bum Kim , Se Hwan Jo , Seong Min Son
IPC分类号： F16H61/00 , F16H59/42 , F16H59/44 , F16H59/48 , F16H59/50 , F16H59/72 , F16H61/02 , F16H59/14
CPC分类号： F16H61/0021 , F16H59/42 , F16H59/44 , F16H59/48 , F16H59/50 , F16H59/72 , F16H61/0025 , F16H61/0265 , F16H61/0274 , F16H61/0276 , F16H2059/147 , F16H2061/0096
摘要： A hydraulic pressure control method for a vehicle transmission includes accumulating factors representing vehicle usage, accumulating factors representing driver's driving tendency, calculating a first line pressure compensation value according to the usage depending on the accumulated values of the factors representing the vehicle usage, calculating a second line pressure compensation value according to the driver's driving tendency depending on the accumulated values of the factors representing the driver's driving tendency, determining a final line pressure by adding the first and second line pressure compensation values according to the usage and the driver's driving tendency to a basic line pressure, and operating a transmission hydraulic system according to the final line pressure.
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公开(公告)号：US11603919B2
公开(公告)日：2023-03-14
申请号：US17408223
申请日：2021-08-20
发明人： Se Hwan Jo , Seong Min Son , Kyung Moo Lee , Bong Uk Bae
摘要： A method of controlling an EOP of a hybrid vehicle may include controlling the EOP in a predetermined high-speed mode when the vehicle is started; controlling the EOP in a predetermined middle-speed mode in which the EOP is driven at revolutions per minute (RPM) lower than RPM of the high-speed mode when the high-speed mode is terminated; and controlling the EOP in a predetermined low-speed mode in which the EOP is driven at RPM lower than the RPM of the middle-speed mode when the vehicle is stopped.
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公开(公告)号：US20230051429A1
公开(公告)日：2023-02-16
申请号：US17730762
申请日：2022-04-27
发明人： Bong Uk Bae , Se Hwan Jo , Ki Bum Kim , Jin Young Hwang , Seong Min Son
摘要： A method of controlling an electric oil pump (EOP) for a vehicle includes, if a current temperature of oil is lower than a reference temperature, determining whether an EOP RPM is lower than a minimum driving RPM, if the EOP RPM is lower than the minimum driving RPM, applying a first reduction rate for a first setting time and reducing a target line pressure and an instruction RPM of the EOP, if the EOP RPM is equal to or higher than the minimum driving RPM, determining whether vibration of the EOP RPM is generated above a reference vibration, and if the vibration is generated above the reference vibration, applying a second reduction rate for a second setting time and reducing the target line pressure or the instruction RPM of the EOP.
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公开(公告)号：US11946541B2
公开(公告)日：2024-04-02
申请号：US17408299
申请日：2021-08-20
发明人： Sung Sik Choi , Kyung Moo Lee , Seong Min Son , Ki Bum Kim , Se Hwan Jo , Bong Uk Bae
IPC分类号： F16H57/04
CPC分类号： F16H57/0436 , F16H57/0443
摘要： A method of controlling an EOP of a powertrain may include determining, by a controller electrically connected to the EOP, whether an oil sloshing phenomenon in which it is difficult for oil to return to a space where an oil intake port of the EOP is positioned may occur while a vehicle is running; and reducing, by the controller, the revolutions per minute (RPM) of the EOP by a predetermined reduced RPM when it is determined that the oil sloshing phenomenon may occur.
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公开(公告)号：US20230053741A1
公开(公告)日：2023-02-23
申请号：US17744193
申请日：2022-05-13
发明人： Jin Young Hwang , Bong Uk Bae , Ki Bum Kim , Se Hwan Jo , Seong Min Son
摘要： A hydraulic pressure control method for a vehicle transmission includes accumulating factors representing vehicle usage, accumulating factors representing driver's driving tendency, calculating a first line pressure compensation value according to the usage depending on the accumulated values of the factors representing the vehicle usage, calculating a second line pressure compensation value according to the driver's driving tendency depending on the accumulated values of the factors representing the driver's driving tendency, determining a final line pressure by adding the first and second line pressure compensation values according to the usage and the driver's driving tendency to a basic line pressure, and operating a transmission hydraulic system according to the final line pressure.
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