Hyundai Motor Company

Kia Motors Corporation

Hyun Jun Soh

Gun Seok Yoon

Jin Duk Oh

Young Jun Lee

Yong Hyun Kim

Seong Yeop Lim

Jeongbin Yim

Jeong Won Rho

Jeong Min Shin

A method of controlling a PE-battery water cooling system for a green vehicle enables cooling of PE components and a battery by means of a cooperative control between a PE cooling system and a battery cooling system even when a part among the components of the PE-battery water cooling system fails.

Method of controlling a PE-battery water cooling system for a green vehicle

A fault diagnosis apparatus of a coolant circulation system for a vehicle includes: a water pump for circulating coolant; a controller for applying a revolutions per minute (RPM) command to the water pump; a water pump driver for operating the water pump depending on the applied RPM command; and a current sensor for sensing an current input to the water pump driver. The controller determines whether the input current sensed by the current sensor is within a predetermined normal range to determine whether the coolant circulation system is failed or not.

Fault diagnosis apparatus of coolant circulation system for vehicle

A power system having two motors includes: a first motor transmitting power to an output shaft of an engine or receiving power from the output shaft of the engine; a first clutch selectively connecting a first rotor of the first motor to the output shaft and mounted on a first power transmitting member that operably connects the output shaft and the first rotor of the first motor; a second motor outputting power to an input shaft of a transmission; and a second clutch selectively connecting the output shaft to a second rotor of the second motor and mounted on a second power transmitting member that operably connects the output shaft and the second rotor of the second motor.

Power system having two motors

The present disclosure provides a method of diagnosing an oil leak of an engine clutch in a hybrid electric vehicle including: when the engine starts up in the hybrid electric vehicle, operating a hydraulic actuator provided in the engine clutch, wherein the hydraulic actuator is configured to perform engagement or disengagement between an engine and a motor; determining displacement of a piston provided in the hydraulic actuator and pressure for any displacement of a plurality of the displacements of the piston; calculating a pressure gradient based on the displacement of the piston and the pressure for any displacement of the plurality of the displacements of the piston; and determining the oil leak of the engine clutch based on the pressure gradient.

Method of diagnosing oil leak of engine clutch in hybrid electric vehicle

A method for controlling a vehicle in the event of an oil-pump failure may include: a first comparison step of comparing, by a controller, an actual RPM of an EOP with a first set value set in advance based on a target RPM of the EOP; a maximum EOP driving step of driving the EOP to a maximum output by the controller when a result of the comparison in the first comparison step shows that the actual RPM is smaller than or equal to the first set value; a second comparison step of comparing the actual RPM of the EOP with a second set value by the controller after the maximum EOP driving step; and a creep driving step of making the vehicle perform creep driving using a motor by the controller when a result of the comparison in the second comparison step shows that the actual RPM is larger than the second set value.

Growing community of inventors

Seongnam-si, South Korea

Hyun Jun Soh