A method for controlling a line pressure of a hybrid vehicle includes applying, by a controller, a set current corresponding to a target pressure to a first solenoid valve controlling the line pressure, driving, by the controller, a second solenoid valve to open an engine clutch after the applying step, comparing, by the controller, a difference value between a real pressure of the engine clutch sensed by a pressure sensor and the target pressure with a preset pressure after the driving step, and as a result of performing the comparing step, if the difference value is equal to or greater than the preset pressure, controlling, by the controller, an increase of a revolution per minute (RPM) speed of the electric oil pump and an increase of a pressure of the first solenoid valve to be alternately generated.

Disclosed are a hybrid power system of a vehicle and a control method therefor. The hybrid power system of a vehicle comprises: an engine; a dual-clutch automatic transmission comprising an ISG motor; a first power unit and a second power unit; a power battery, the power battery being connected to the ISG motor by the first power unit; a power battery manager, the power battery manager being connected to the power battery and used to test an SOC of the power battery; a rear wheel drive motor, the rear wheel drive motor being connected to the power battery by the second power unit, and the rear wheel drive motor being connected to a rear speed reducer of the vehicle; and a vehicle controller, the vehicle controller being connected to the power battery manager, and the vehicle controller controlling the vehicle to enter a corresponding operating mode according to the SOC and drive required torque WTD at a wheel of the vehicle. The hybrid power system of a vehicle and the control method therefor can ensure that a vehicle operates in the best operating mode, thereby improving the performance of the vehicle.

A vehicle control device controls a vehicle that has an electric oil pump, executes idling stop control for stopping a drive source when predetermined conditions are satisfied, and is capable of applying a braking force in a state where a brake pedal is released. The vehicle control device determines whether or not the vehicle is stopped, determines whether or not the electric oil pump is driven, and executes the idling stop control when stop of the vehicle is determined, driving of the electric oil pump is determined, and the braking force is applied to the vehicle. Application of the braking force is started after the vehicle is determined to be stopped and the electric oil pump is determined to be driven.

A control device for a drivetrain of a vehicle, includes a drive engine, a starting element, and a coupling element. The coupling element brakes a secondary side when the control device receives an input signal indicating a switching off of the drive engine. The starting element includes a mass damper torsional damper arrangement with at least one damper mass. The starting element is coupled with the drive engine by a primary side and with the mass damper torsional damper arrangement by a secondary side so as to be fixed with respect to relative rotation, and the coupling element is constructed to brake the secondary side by coupling with the primary side of the starting element and/or by coupling with a reference component that stationary when the vehicle is stationary. This makes it possible to find a better compromise between comfort, responsiveness, economical, and ecological aspects of the drivetrain.