Hyundai Motor Company

Kia Motors Corporation

Haksung Lee

Jaeshin Yi

Yeonho Kim

Jong Hyun Kim

Jang Mi Lee

Sanghyun Jeong

Sanglok Song

Gyeongcheol Kim

Seung Ki Kong

Youngchul Kim

Sang Lok Song

SangLok Song

Seunghyun Yang

Jong Ho Lee

Ki Nam Kim

June Ho Lee

Seung Hyun Yang

Jangmi Lee

Seungjae Kang

Sunghyun Ahn

SanLok Song

Seungki Kong

A vehicle may include a driving motor supplying driving force to vehicle wheel; a power converter using a coil provided in the driving motor to transform power input from the external power source; a battery charged according to counter electromotive force of the driving motor in a regenerative braking mode, charged according to the power transformed by the power converter in a charging mode, and supplying driving power to the driving motor in a driving mode; an oil pump supplying oil to the driving motor; a detector detecting temperature of the oil; and a controller controlling the oil pump to be operated in a warm-up mode when the oil temperature detected by the detector is less than a first threshold temperature and the battery is in the charging mode, and applying reference power to the oil pump to move the oil to the driving motor in the warm-up mode.

Vehicle and method for controlling the same

A limp home mode drive method and system for a hybrid vehicle are provided. The method includes prohibiting an operation of an overdrive brake that is included in a transmission for the hybrid vehicle and is driven by an electric oil pump when the hybrid vehicle is being driven and the electric oil pump is not operated. A speed of the hybrid vehicle is then limited based on a heat value of a rotation driver included in the transmission and a torque of a drive motor driving the transmission is limited based on a temperature of the drive motor. A mechanical oil pump included in the hybrid vehicle is operated to enable limp home driving of the hybrid vehicle.

Limp home mode drive method and system for hybrid vehicle

A control apparatus of a hybrid vehicle having an electric oil pump includes an engine clutch selectively engaging an engine and a drive motor; an automatic transmission changing a power generated from the engine by engagement and releasing of a friction element into a required torque depending on a speed; a hydraulic pressure sensor sensing an oil pressure supplied to the engine clutch; a temperature sensor sensing an oil temperature discharged from the electric oil pump; a hybrid control unit (HCU) controlling the electric oil pump to selectively engage the engine clutch depending on a driving state; and a transmission control unit (TCU) controlling the electric oil pump to supply transmission control pressure to the friction element. The electric oil pump includes an oil motor and a pump to supply the operating hydraulic pressure to the engine clutch and the friction element.

Apparatus for controlling hybrid vehicle having engine oil pump and method thereof

An oil pump system and method of a hybrid vehicle stably supplies an operating hydraulic pressure to an automatic transmission using only an electric oil pump. The oil pump system of the hybrid vehicle, which supplies an operating hydraulic pressure to an automatic transmission of the hybrid vehicle, includes: an automatic transmission control unit controlling operation of the automatic transmission; an electric oil pump pumping oil to generate an operating hydraulic pressure which is to be supplied to the automatic transmission; and an oil pump control unit receiving information on a state of the automatic transmission from the automatic transmission control unit and controlling operation of the electric oil pump. The operating hydraulic pressure supplied to the automatic transmission may be generated solely through the electric oil pump which is electrically operated.

Oil pump system of hybrid vehicle and method for controlling the same

An oil pump system of a hybrid vehicle may include an electric oil pump which supplies operating hydraulic pressure to the transmission based on a speed command; a data detector which detects data for controlling the electric oil pump; and a controller which sets a driving mode of the electric oil pump based on the data detected by the data detector, determines a basic flow rate of the set driving mode, determines a final flow rate by compensating for the basic flow rate, and applies the speed command to the electric oil pump, in which the operating hydraulic pressure is supplied to the transmission only by the electric oil pump, and the speed command is determined based on target hydraulic pressure, an oil temperature, and the final flow rate.

A device for controlling fail-safe of a hybrid vehicle capable of providing fail-safe running by controlling drive of an electric oil pump with a generation voltage of a hybrid starter and generator (HSG) or a drive motor when a main relay may be cutoff due to failure of a high voltage component may include a method having determining whether the hybrid vehicle proceeds to a fail-safe mode due to a main relay opened by failure of a high voltage component during running of the hybrid vehicle or not, detecting a generation voltage of an HSG or a drive motor when the proceeding to the fail-safe mode may be determined, and generating oil pressure by controlling driving of an electric oil pump according to a generation amount of the HSG or the drive motor in running in the fail-safe mode or in a stop state.

Device for controlling fail-safe of hybrid vehicle and method thereof

An oil pump control apparatus of a hybrid vehicle is provided that controls an oil pump according to a demand of an output torque and oil temperature. In particular, hydraulic line pressure is controlled by operating an oil pump at maximum power if a starting demand for a hybrid vehicle is detected. Viscosity is calculated as well to correspond to an oil temperature in an engine stop mode and a rotation speed of the oil pump is controlled at a low power. Additionally, viscosity is also calculated according to a variation of a line pressure in a driving mode and the rotation speed of the electric oil pump is controlled in either a low power, a middle power, and a high power state as well.

Oil pump controlling system of hybrid vehicle and method thereof

A system and method for diagnosing and controlling an unusual hydraulic state of an electric variable transmission of a hybrid vehicle achieving multi modes including a first mode and a second mode, the method may include determining whether the first mode is converted into the second mode, determining whether a hydraulic pressure is generated in a clutch which is engaged and the generated hydraulic pressure is higher than a predetermined hydraulic pressure when the first mode is converted into the second mode, and determining that the hybrid vehicle is in an unusual condition if the hydraulic pressure is not generated in the clutch or the generated hydraulic pressure is higher than the predetermined hydraulic pressure.

Method for diagnosing and controlling an unusual hydraulic state of hybrid vehicle transmission

A clutch oil reservoir cap according to an exemplary embodiment of the present invention including a head and a body may include an exhaust opening formed in the head for exhausting air, an intake hole formed in the head for inflow of air, and an operation valve disposed in the head, wherein the operation valve selectively opens or closes the exhaust opening and the intake hole according to fluctuation of pressure in a part below the operation valve.

Clutch oil reservoir cap

A method for determining an operating state of elements of a transmission may include acquiring rotational speeds of both members constituting the elements, determining whether the rotational speeds of the members may be the same, and determining that the elements may be directly connected when the rotational speeds of the members may be the same, and that the elements may be disconnected or slip when the rotational speeds of the members may be different.

Growing community of inventors

Gunpo-si, South Korea

Haksung Lee