Hyundai Motor Company

Kia Motors Corporation

Kia Corporation

Snu Rdb Foundation

Seok Min Jeong

Ji Hoon Kang

Seong Wook Moon

Dae Ro Park

Seongwook Moon

Daero Park

Joonyoung Park

Jeong Soo Eo

Jae Ho Lee

Song Il Park

Seok Young Yun

Suk-Won Cha

Hee Yun Lee

Ji Yeol Park

Jong Han Oh

Jung Un An

Howon Seo

Won Sik Lim

Nam Woong Kim

Kyo Bum Lee

An embodiment system for controlling power consumption of a high voltage battery includes a driver's requested torque determiner configured to determine a driver's intention to accelerate a vehicle and to calculate a driver's requested torque, an available power amount calculator configured to calculate an available power amount of a difference between an existing power consumption amount of electronic components configured to use the high voltage battery as a power source and a minimum power consumption amount of the electronic components required by a vehicle system, and a driving controller configured to variably control power applied to the electronic components and power applied to a drive motor of the vehicle upon determining the driver's intention to accelerate the vehicle.

System and method for controlling power consumption of high voltage battery

Disclosed herein is a method of controlling a terrain driving mode of a hybrid vehicle, including defining demand torque required for vehicle driving depending on driver demand and an environment of a driving road, differentiating demand torque in response to the terrain driving mode, calculating accumulated driving energy from a time point of an operation in the terrain driving mode based on the differentiated demand torque, and determining a terrain driving method based on the calculated accumulated driving energy and a state of energy (SoE) in consideration of a state of charge (SoC) and a voltage condition of a battery cell.

Method and apparatus for controlling terrain driving mode of hybrid vehicle

To minimize a pedal operation of a driver and to provide convenience of driving by flexibly controlling a maximum creep speed during a creep driving in a traffic congestion section, a vehicle includes: a radar configured to obtain speed information of a preceding vehicle and distance information to the preceding vehicle; a sensor configured to acquire behavior information of the vehicle; a controller configured to determine whether or not the vehicle has entered the traffic congestion section based on the behavior information of the vehicle, to determine a safety distance and a surplus distance related to the preceding vehicle, to determine a maximum creep speed and a creep torque based on the surplus distance, and to control operation of at least one of a motor or an engine to transmit the creep torque to a wheel of the vehicle.

Vehicle and method for controlling the same

A device for controlling an engine clutch in an environmentally-friendly vehicle, wherein the engine clutch is disposed between an engine and a driving motor and is configured to selectively connect the engine to the driving motor, includes: a transmission configured to receive a driving force that is transmitted from at least one of the engine and the driving motor by release or engagement of the engine clutch; and a controller configured to control the engine clutch based on a gear of the transmission when the failure of the engine clutch is detected and configured to charge a battery using the engine.

Device and method for controlling an engine clutch in an environmentally-friendly vehicle

Disclosed are a hybrid electric vehicle, which may be effectively launched when an engine clutch to connect an engine and an electric motor for driving is fixed in a lock-up state, and a method of controlling the same. A method of controlling launch of a the hybrid electric vehicle provided with an engine clutch disposed between a first motor and an engine includes determining whether or not the engine clutch is in a lock-up state, securing running of the engine, upon determining that the engine clutch is in the lock-up state, executing slip launch of the hybrid electric vehicle using power of the engine, and launching the hybrid electric vehicle using power of the first motor, if first conditions by stall of the engine are satisfied. Execution of slip launch of the hybrid electric vehicle includes charging a main battery using a second motor connected to the engine.

Hybrid electric vehicle and method of controlling the same

A method for controlling a state of charge (SOC) of a battery for a cruise travel of a hybrid vehicle includes predicting, by a controller, the SOC of the battery including a change slope of the SOC of the battery for the cruise travel based on a measured value of the SOC. The method includes determining, by the controller, whether the predicted SOC of the battery is equal to or greater than a maximum value of a normal range of the battery when the change slope of the SOC is greater than zero. The method includes driving, by the controller, only a driving motor of the hybrid vehicle whereby the driving motor uses electric power of the battery when the predicted SOC of the battery reaches the maximum value of the normal range of the battery. The normal range of the battery is a region required for the cruise travel of the hybrid vehicle.

Method and device for controlling a battery state of charge for cruise travel of a hybrid vehicle

Disclosed herein are a method capable of controlling an engine clutch by estimating the speed of an electric motor in a situation where the speed of the motor is not measured, and a hybrid vehicle for performing the same. The method of controlling an engine clutch of a parallel-type hybrid vehicle includes determining whether a state of a transmission clutch and a predetermined state condition of an engine clutch are satisfied in a first controller, when an error occurs in motor RPM information sent from a second controller, replacing the motor RPM information with an input RPM of a transmission or an RPM of an engine, based on a result of the determination in the first controller, so as to send the same to a third controller, and controlling the engine clutch using the replaced motor RPM information in the third controller.

Hybrid vehicle and method of controlling engine clutch thereof

An engine clutch control system for a hybrid vehicle has a power source including an engine and a motor, an engine clutch between the engine and the motor, a traveling information detector that detects traveling information including at least one of the vehicle speed, shift gear, displacement of the accelerator pedal, and displacement of the brake pedal, and a hybrid controller that selects an EV mode or HEV mode by controlling disengagement or engagement of the engine clutch. A method of controlling the engine clutch includes determining whether there is a request for changing into the HEV mode from the EV mode; determining a reference speed from traveling inertia of the vehicle and inertia of the engine and the motor; determining a desired speed for controlling the determined reference speed; and calculating transmission torque of the engine clutch.

Engine clutch control system for hybrid vehicle and method of controlling engine clutch

A hydraulic pressure instruction-learning apparatus of a hybrid vehicle includes a power source including an engine and a motor. The engine clutch is disposed between the engine and the motor. The vehicle controller is configured to output a hydraulic pressure instruction to control engagement/disengagement of the engine clutch. The vehicle controller compares output performance of the engine clutch with predetermined dynamic target performance in a launch control, extracts a performance error function if a difference therebetween exceeds a predetermined allowable error range, and corrects the output performance of the engine clutch, such that the output performance falls within the predetermined allowable error range and is stored as a learned value.

Hydraulic pressure instruction-learning apparatus for hybrid vehicle and method using the same

Disclosed is a system and method for determining when an engine of a hybrid electric vehicle has abnormally stalled. In particular, a control unit is configured to determine whether an entry condition has been satisfied before determining whether the engine stalled. Then once it is determined that the engine has stalled, the control unit increase a stall count and monitors whether the engine enters a normal operation state. If the engine enters a normal state, the control unit decreases the stall count. However, when the stall count is greater than or equal to a predetermined threshold value it is determined that the engine is out of order. Thus, it can be clearly identified when an engine has stalled abnormally and over-discharging of the battery may be avoided.

System and method for determining when engine has abnormally stopped in a hybrid electric vehicle

A system and method of controlling a fail-safe for a vehicle is provided. The method includes determining, by a controller, that remaining hydraulic pressure exists in the clutch when the clutch is not opened and a target value of oil pressure for opening the clutch is maintained for a predetermined time period. In addition, whether a vehicle is stopped is confirmed in response to determining that remaining hydraulic pressure exists in the engine clutch. The controller is further configured to transmit a signal to shift to the vehicle to a neutral (N) stage to a transmission controller and shift to the vehicle to the N-stage in response to determining that the vehicle is stopped. Then, the engine is driven by the controller in response to determining that the vehicle is shifted to the N-stage.

System and method of controlling fail safe for hybrid vehicle

A system for determining disablement of driving of a hybrid vehicle is disclosed. The system for determining disablement of driving of a hybrid vehicle may include: power electronic components having a battery at which DC electricity is stored, an inverter converting the DC electricity of the battery into AC electricity, and a motor receiving the AC electricity from the inverter and generating driving torque; an engine burning a fuel so as to generate driving torque and being selectively connected to the motor; an engine clutch selectively connecting the engine to the motor; a transmission connected to the motor to receive the driving torque of the motor or the driving torque of the engine; and a control portion controlling operations of the power electronic components, the engine, and the engine clutch, wherein the control portion turns off a system ready indication in a case that driving of the vehicle is disabled.

System for determining that driving of a hybrid vehicle is disabled

A method and system for controlling a low-voltage DC/DC converter (LDC) of a hybrid electric vehicle (HEV) includes performing a trial starting comprising steps of: trying ignition start, performing an immobilizer authentication process, and turning on a main relay of a high-voltage battery. The LDC is controlled after the trial starting, so that an operating voltage is applied from the LDC to an electric load including various kinds of controllers, thereby allowing starting of the HEV.

System and method for controlling low-voltage DC/DC converter (LDC) of hybrid electric vehicle

A system and method for controlling a power source when a transmission malfunctions in a hybrid vehicle is disclosed. In particular, a control unit confirms a speed of a transmission output is 0 rpms, detects whether the transmission is in park or neutral, and limits a speed of an engine and a motor in response to determining that the transmission is in park or neutral and that the transmission output is 0 rpms.

Growing community of inventors

Suwon-si, South Korea

Seok Min Jeong