Hyundai Motor Company

Kia Motors Corporation

Jiyong Yu

Sejun Kim

Junghwan Bang

Chongah Gwon

Junyong Lee

Daekwang Kim

Chikung Ahn

Minyoung Jung

Hyungjun Kim

Sungjin Park

Soon Ae Gwon

Jung-hwan Bang

A method of determining an Idle Stop and Go (ISG) ventilation condition may include an ISG restriction early step that calculates an expected external air temperature through modeling using information acquired from a vehicle and execute an ISG logic to determine whether ISG entrance is possible based on a current ventilation condition of the vehicle, an ISG restriction proceeding step that detects an voltage of an air-conditioning system, an ISG restriction ascertaining step that determines whether an ISG entrance condition is satisfied, wherein the ISG entrance condition includes comparing the expected external air temperature through modeling with a specific temperature and the voltage of the air-conditioning system with a specific voltage, and an ISG entrance step that controls an engine by performing the ISG entrance when the ISG entrance condition is satisfied.

Ventilating condition determine method of idle stop and go function

The ISG (Idle Stop & Go) system may include a vehicle information receiving unit receiving a vehicle information, and a control unit including an ISG operation logic which performs an idle stop when a preset idle stop condition is satisfied and restarts the engine when a preset restart condition of the engine is satisfied, and an ISG deactivation determination logic which determines whether a preset ISG deactivation condition is satisfied or not, based on the accumulated number of determinations that the idle stop condition is not satisfied, the accumulated number of idle stops, and the accumulated number of determinations that a performance time of the idle stop is smaller than a preset idle stop retention time, and deactivates the ISG operation logic when the ISG deactivation condition is satisfied.

ISG system and control method thereof

An apparatus for monitoring belt slip in a belt-torque assistance system includes a motor-alternator slip control unit that determines whether the belt connecting the motor-alternator with the engine in accordance with driving modes of a vehicle slips, and restricts operation of the motor-alternator in accordance with the slip of the belt, an ECU that outputs the operation state of the engine to the motor-alternator slip control unit, an inverter that changes an alternate current generated from the motor-alternator into a direct current or a direct current into an alternate current to drive the motor-alternator, and outputs a signal according to the speed of a rotor and power generation load to the motor-alternator slip control unit, and a motor-alternator operation control unit that operates the motor-alternator to generate power from the driving power transmitted from the engine and to assist torque of the engine.

Apparatus and method for monitoring belt slip in belt-torque assistance system

An ISG system may include a shift stage sensing unit that senses a shift stage of a transmission, a parking sensing unit that senses a driver's intension of parking by recognizing at least one of whether a vehicle enters a parking lot and whether a parking assistant system may be operated, and an ISG controller that stops an idle-stop of an engine when the shift stage of the shift stage sensing unit may be at a reverse stage or the parking sensing unit senses the driver's intension of parking.

An ISG control method for a vehicle in a congested area, may include an N-stage stop determining step that determines whether a shift lever has moved from a D-stage to an N-stage and a brake has been operated, discriminating from when the shift lever is at the D-stage; an N-stage vehicle speed determining step that determines whether a vehicle speed is equal to or less than a predetermined N-stage stop vehicle speed after the N-stage stop determining step; and a remaining condition determining step for entering an idle-stop state, when the vehicle speed is equal to or less than the N-stage stop vehicle speed, as a result of performing the N-stage vehicle speed determining step, and when idle-stop entering conditions other than a position of the shift lever, the vehicle speed, and the history of a maximum traveling vehicle speed are satisfied.

ISG control method for vehicle in congested area

A device controls ISG (Idle Stop & Go) logic mounted in a vehicle equipped with an ISG system. The device includes a transmitting unit that shows the current state of a gear in the vehicle and controls the hydraulic pressure of a transmission in idle stop or restarting an engine, a driving unit that performs the idle stop when the pedal of a brake becomes ON, with the gear at a D (Drive)-range, and restarts the engine when the pedal of the brake becomes OFF, with the gear of the vehicle at the D-range, and a brake unit that controls movement of the vehicle by controlling the hydraulic pressure of the brake, in which brake unit controls the hydraulic pressure of a brake to be kept for a predetermined time from when the pedal of the brake becomes OFF.

Device and method for controlling ISG logic

An apparatus and a method for controlling engine restarting of a vehicle includes a hood opening recognition switch automatically on when a hood of the vehicle is opened and outputting a hood opening recognition signal; a front sensor installed on the front of the vehicle and outputting a sensing signal by sensing an object positioned with a predetermined distance in front of the vehicle; a determination unit verifying whether at least one of the hood opening recognition signal and the sensing signal is inputted in the state where an engine of the vehicle is off; and a setting unit setting a lock of restarting of the engine when it is verified that at least one of the hood opening recognition signal and the sensing signal is inputted.

Apparatus and method for controlling engine restarting of vehicle

A safety improvement method of an Idle Stop and Go (ISG) function may include: recognizing initial conditions that senses whether an engine is restarted, when the engine is restarted by the ISG, and whether a driver operates a vehicle, and determines whether to warn the driver; warning the driver that makes the driver recognize that the engine is restarted if it is determined to warn the driver in recognizing initial conditions; and stopping the warning that stops warning the driver after warning the drive has been executed. Warning the drive may be achieved by an alarm generated from a buzzer for a predetermined time and a visual screen that is provided for the driver.

Safety improvement method of idle stop and go function

An ISG system prevents fuel consumption due to unnecessary idling, by controlling the start of an engine, in accordance with engine stop conditions and restart conditions of a vehicle equipped with an automatic transmission. A method includes determining whether prior conditions for engine stop in an engine controller when an engine is in operation is satisfied, determining whether the engine can be stopped, when the prior conditions for engine stop are satisfied, determining whether engine stop conditions is satisfied, when the engine can be stopped, stopping the engine that is in operation, when the engine stop conditions are satisfied, determining whether key start conditions are satisfied, when the engine is stopped, determining whether restart is possible, when the key start conditions are not satisfied, determining whether conditions for restart are satisfied, when restart is possible, and restarting the engine, when the restart conditions are satisfied.

Idle stop and go system and method for controlling thereof

A device for controlling ISG logic is mounted in a vehicle equipped with an ISG system. The device includes a brake pedal switch, a shift lever switch that shows the current state of a gear of the vehicle, an inclination sensor that is mounted in the vehicle and measures the inclination of a road where the vehicle is positioned, a controller that internally controls the vehicle to an N (Neutral) state, regardless of the gear range shown by the shift lever switch, for the vehicle on a downhill, in accordance with the measured inclination, and an engine unit that performed idle stop when the brake pedal becomes ON, with the gear of the vehicle at a D (Drive) sate, and restarts the stopped engine when the brake pedal becomes OFF, with the gear of the vehicle at the D state.

Method and device for controlling ISG logic

An apparatus for supplementing a brake vacuum pressure may include an engine control unit (ECU) that generates a vacuum pressure control signal for supplementing the brake vacuum pressure in accordance with the result of determining whether the brake vacuum pressure is included in a reference vacuum pressure range after a vehicle implements an ISG process, a sub-oil pump that is operated in accordance with a control signal from the ECU to supply hydraulic pressure to the inside of an automatic transmission after the vehicle implements the ISG process, a vacuum pump that generates and supplies the brake vacuum pressure to a brake system, and an electronic clutch that selectively couples the sub-oil pump and the vacuum pump to allow driving force of the sub-oil pump to be transmitted to the vacuum pump or to be cut, in accordance with whether the vacuum pressure control signal is sent thereto.

Apparatus and method for supplementing brake vacuum pressure

A method and a HAC system controls a hill-state assist control (HAC) operation when restarting an engine of the vehicle having an idle stop and go (ISG) system for an automatic transmission. The method includes starting restarting of the engine by the ISG system and an HAC operation, monitoring the RPM of the engine, and releasing the HAC operation in a case where the RPM of the engine meets an HAC release condition, and maintaining the HAC operation until the HAC release condition is met in a case where the RPM of the engine does not meet the HAC release condition.

Method of controlling HAC operation when restarting engine of vehicle

A control method of an assist pump for automatic transmission of a vehicle is provided with an ISG system. The control method includes executing idle stop and go, detecting present transmission gear shift and operating an assist hydraulic pump at a predetermined standard RPM according to detected present transmission gear shift. The control method may reduce electric power consumption and enhance battery durability and fuel efficiency.

Control method of assist pump for automatic transmission of vehicle provided with ISG system

An ISG entry apparatus and method is capable of operating ISG logic without employing a battery sensor. The ISG entry apparatus includes a starting voltage detection unit detecting a starting voltage of an ISG vehicle having no battery sensor mounted therein, a cooling water detection unit detecting a cooling water temperature of the ISG vehicle, an ISG entry frequency detection unit detecting an ISG entry frequency of the ISG vehicle, an accumulated charge amount detection unit detecting an accumulated charge amount of the ISG vehicle during driving, a starting number counting unit counting the starting number of the ISG vehicle, and an engine control unit determining whether or not to enter a mode in which an ISG operation is performed based on the starting voltage, the cooling water temperature, the ISG entry frequency, the accumulated charge amount, and the starting number and performing an ISG operation.

ISG entry apparatus and method of vehicle

A vehicle generation controlling system for saving fuel includes a battery supplying power to electric components of a vehicle, a generator generating power by using rotational force of an engine and supplying the generated power to the battery and the electric components, and an ECU determining whether generation control is prevented by monitoring vehicle information on the vehicle and operational information on an operation of an electric product of a cooling system among the electric components and controlling the generator to prevent the generation control according to the determination. As a result, the generation control is performed based on whether an electric product of a cooling system is actuated and vehicle information on the vehicle to thereby prevent cooling performance from being deteriorated due to the generation control.

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Pocheon-si, South Korea

Jiyong Yu