Abstract: A railess variable seatback type rear seat includes: a linear movement device configured to convert a rotation of a motor into a linear movement; a sliding movement device configured to convert the linear movement into a sliding movement in which a seat cushion is pushed forward or backward; and a reclining angle change device configured to convert the sliding movement into a reclining movement, and to fold a seatback, which is connected to the seat cushion, forward or to recline the seatback backward.

Abstract: A method of controlling an electric oil pump driven by a motor, may include changing, by a controller, a frequency of a current applied to the motor with a predetermined control cycle to control RPM of the motor to instantaneously change into a different value according to a frequency change.

Abstract: A method of controlling an electric oil pump driven by a motor, may include changing, by a controller, a frequency of a current applied to the motor with a predetermined control cycle to control RPM of the motor to instantaneously change into a different value according to a frequency change.

Abstract: A device for ripple controlling an alternator includes an alternator including a rotor and a stator, a detector for detecting a rotation position of the rotor, and a controller for controlling the alternator to generate a toque ripple with an opposite phase to a rotation of a crankshaft of an engine.

Abstract: A device for ripple controlling an alternator includes an alternator including a rotor and a stator, a detector for detecting a rotation position of the rotor, and a controller for controlling the alternator to generate a toque ripple with an opposite phase to a rotation of a crankshaft of an engine.

Abstract: A device and a method for controlling an alternator which is connected to an engine through a pulley and an accessory belt include a drive motor connected to a rotor shaft of the alternator. A controller is configured to control the drive motor so that a rotation cycle of the rotor shaft has the same phase as a rotation cycle of a crankshaft of the engine.

Abstract: The bypass valve system of a turbo-charged engine includes a compressor coupled between an air intake and a cylinder. The system also includes a bypass valve coupled in a bypass passage between an intake manifold and the air intake. The bypass valve is configured to selectively open and close the bypass passage in response to a change in pressure downstream of the compressor. A throttle position sensor is configured to generate an electric signal that is proportional to a degree of opening of a throttle valve. Also, an electronic control unit (ECU) is configured to output an activating signal when a sudden closure of the throttle valve is detected based on the electric signal. Finally, a solenoid valve is configured to supply pressure downstream of the compressor to the bypass valve when it receives the activating signal.

Abstract: The bypass valve system of a turbo-charged engine includes a compressor coupled between an air intake and a cylinder. The system also includes a bypass valve coupled in a bypass passage between an intake manifold and the air intake. The bypass valve is configured to selectively open and close the bypass passage in response to a change in pressure downstream of the compressor. A throttle position sensor is configured to generate an electric signal that is proportional to a degree of opening of a throttle valve. Also, an electronic control unit (ECU) is configured to output an activating signal when a sudden closure of the throttle valve is detected based on the electric signal. Finally, a solenoid valve is configured to supply pressure downstream of the compressor to the bypass valve when it receives the activating signal.