Hyundai Motor Company

Kia Motors Corporation

Kia Corporation

Gyeong Cheol Kim

Hak Sung Lee

Seong Hwan Kim

Sang Hyun Jeong

Dae Won Yang

Jong Hyun Kim

Sang Lok Song

Seung Jae Kang

Sang Jin Park

Young Chul Kim

Kyoung Joo Kim

June Ho Lee

Seung Ki Kong

Yoh Han Kim

Sang Ha Song

Hak-Sung Lee

A motor driving system includes first and second motors including multiple first windings and second windings; a first inverter including a DC terminal connected to a DC voltage source and an AC terminal connected to the multiple first windings; a first switch part including a plurality of first mode change switches connected to the multiple first windings; a second inverter including a DC terminal connected to the DC voltage source and an AC terminal connected to the plurality of first mode change switches; a second switch part including a plurality of second mode change switches connected to the AC terminal of the second inverter and the multiple second windings; a third switch part including a plurality of third mode change switches connected to the multiple first windings; and a controller configured to control the short-circuited state or the open state of the multiple first mode, second and third mode change switches, based on whether the first and the second motors are driven.

Motor driving system

A method and apparatus for controlling transmission oil temperature are provided. The transmission oil is heated using a motor coil of an electric oil pump (EOP) as a heater before a startup of a vehicle. The method includes applying a current to the motor coil of the EOP configured to operate a transmission of the vehicle to thus heat the transmission oil by heat generated from the motor coil.

Method and apparatus for controlling transmission oil temperature

An electric oil pump system allows the cooling of an electric oil pump (EOP) and an oil pump controller (OPU) to be performed efficiently in the vehicle equipped with the electric oil pump. An electric oil pump of the system includes a pumping part that is operated by power of a motor to suction and direct pressurized oil. An oil pump controller operates the electric oil pump. A water-cooled cooling apparatus cools the oil pump controller using coolant and an oil-cooled cooling apparatus cools the electric oil pump using oil. The coolant of the water-cooled cooling apparatus and the oil of the oil-cooled cooling apparatus pass through a heat exchanger and as the coolant and oil pass therethrough, heat exchange is achieved.

Electric oil pump system

A limp-home control method for a hybrid vehicle may include: a fault determination step for determining, by a controller, whether a solenoid valve battery short circuit fault occurs in a transmission; a first limp-home step for controlling, by the controller, solenoid valves to implement a limp-home gear stage while maintaining a state where power is suppliable to the solenoid valves involved in shifting gears when it is determined that the solenoid valve battery short circuit fault exists; an engine necessity verification step for verifying, by the controller, whether engagement of an engine clutch is needed; and a second limp-home step for driving, by the controller, a solenoid valve controlling the engine clutch to engage the engine clutch, implementing limp-home driving by engine power when the engagement of the engine clutch is needed.

Limp-home control method for hybrid vehicle

A shift by wire-based transmission system and a method for controlling the same, may include a transmission lever, a main controller that determines a target gear stage and a current control delay time of an actuator based on a manipulation signal received from the transmission lever and controls driving of the actuator based on the determined target gear stage and the current control delay time to determine a gear stage position in a response to the driving of the actuator, and a transmission control unit that controls a hydraulic pressure based on the gear stage position determined by the main controller.

Transmission system based on shift by wire and method for controlling the same

A method for controlling a hydraulic pressure refilling operation for an engine clutch of a vehicle includes determining whether the vehicle travels using power of a driving motor with an engine clutch maintained in a disengaged state, and upon determining that the vehicle travels using power of the driving motor with the engine clutch maintained in the disengaged state, determining whether loss of hydraulic pressure has occurred, and upon determining that loss of hydraulic pressure has occurred, controlling a hydraulic pressure refilling operation such that working fluid in a reservoir is supplied to the actuator with the engine clutch in an engaged state, and controlling the driving motor so that the driving motor outputs a compensated torque by compensating for an effect of a load torque, generated by a non-operating engine, on a torque of the driving motor.

Method for controlling hydraulic pressure refilling operation for engine clutch of hybrid electric vehicle

An apparatus for controlling an electric oil pump (EOP) includes a controller calculating first revolutions per minute (RPM), second RPM and third RPM, the first RPM being EOP RPM required for control of a brake in a transmission, the second RPM being EOP RPM required for cooling of a plurality of motors, and the third RPM being EOP RPM required for lubrication of the plurality of motors, the controller comparing the second RPM with the third RPM and driving the EOP at an RPM obtained by adding the first RPM to the greater of the second RPM and the third RPM.

Apparatus and method for controlling electric oil pump

A method for controlling a motor includes detecting output signals output from three phases of a hall sensor, determining a failure of the hall sensor depending on the output signals, diagnosing which of the three phases of the hall sensor is out of order based on the output signals if it is determined that the hall sensor detections deviate from a predicted order, and outputting a virtual signal for the phase which is determined as a failure among the three phases of the hall sensor to a motor controller.

Method for controlling a motor

A method for diagnosing abrasion of an electric oil pump rotor includes sensing a driving duty of an oil pump control unit, and determining whether the sensed driving duty of the oil pump control unit is below a set reference value, wherein as a result of the determining, when the driving duty of the oil pump control unit is below the set reference value, it is determined that the electric oil pump rotor is in a worn out state.

Method for diagnosing abrasion of electric oil pump rotor

A method and system for controlling a fail safe of a transmission for a vehicle are provided. The method includes detecting an oil temperature of the transmission for the vehicle and determining whether an oil pump has been driven for a set time or more based on the detected oil temperature. An output of an engine is then limited when the set time elapses.

Growing community of inventors

Gyeonggi-do, South Korea

Gyeong Cheol Kim