Systems and methods for operating a hybrid powertrain or driveline that includes an engine and an integrated starter/generator are described. In one example, rotation of an automatically stopped engine may be inhibited when engine braking is requested so that the engine may not be rotated without providing a desired outcome.

A brake apparatus using an electric booster may include: an electric booster connected to a master cylinder and configured to pressure a push rod by pressurizing a reaction disk using an electromotive force of a motor with a pedal stepping force of a driver who steps on a brake pedal, and pressurize a piston of the master cylinder through the push rod; and a control unit configured to compare required brake pressure by the pedal stepping force of the driver and current brake pressure by the motor control to set pressure, and perform cooperation control through an ESC (Electronic Stability Control) and cooperation control through the electric booster.

The invention relates to a control system for controlling a torque generator of a vehicle. The control system is configured to receive one or more electrical signals indicative of a surface indicator; receive one or more electrical signals indicative of a deceleration demand; select a surface type from a plurality of predetermined surface types based on said one or more electrical signals indicative of a surface indicator; determine a target vehicle deceleration in dependence on the selected surface type; determine, based on said one or more electrical signals indicative of a deceleration demand, a requirement to decelerate the vehicle; and in dependence on determining said requirement, output a control signal to the torque generator. The control signal is configured to cause the torque generator to provide the target vehicle deceleration.

A braking force controller causes a first actuator unit to generate a target jerk when the target jerk is equal to or larger than a first jerk, causes the first actuator unit to generate the first jerk and a second actuator unit to generate a jerk obtained by subtracting the first jerk from the target jerk as an additional jerk when the target jerk is smaller than the first jerk and equal to or larger than the sum of the first jerk and a second jerk, and causes the first actuator unit to generate the first jerk and the second actuator unit to generate the second jerk as the additional jerk when the target jerk is smaller than the sum of the first jerk and the second jerk.

A method for controlling a motor vehicle, comprising: retrieving road gradient data relating to an expected travelling route of the motor vehicle; based on at least the retrieved road gradient data and on a motor vehicle mass, simulating a required value of a braking power related variable, which required value is needed to prevent a vehicle speed from increasing above a preset desired vehicle speed in an upcoming downhill slope; determining an available value of the braking power related variable of at least one auxiliary brake of the motor vehicle; and based on the determined available value and the simulated required value of the braking power related variable, controlling the vehicle speed and/or at least one brake actuator of the motor vehicle such that the vehicle speed does not increase above the preset desired vehicle speed in the upcoming downhill slope.

Disclosed herein an electronic brake system includes a reservoir provided with spaces for storing oil, the spaces configured to be partitioned; a master cylinder connected to the reservoir, the master cylinder including first and second master chambers and first and second pistons provided in each master chamber, to discharge oil according to a pedal effort of a brake pedal; a hydraulic pressure supply device operated by an electrical signal to generate hydraulic pressure and including first and second pressure chambers and a hydraulic piston; a first hydraulic circuit configured to transmit hydraulic pressure discharged from the hydraulic pressure supply device to wheel cylinders of left front and right front wheels; and a second hydraulic circuit configured to transmit hydraulic pressure discharged from the hydraulic pressure supply device to wheel cylinders of left rear and right rear wheels; wherein hydraulic pressure returned from the wheel cylinders and hydraulic pressure returned from the second pressure chamber flow into the same reservoir chamber.

The present disclosure relates to a system and method for operating a main brake in case of a failure of an autonomous driving function of an autonomous vehicle. the system for operating the main brake in case of a failure of the autonomous driving function of the autonomous vehicle includes an autonomous driving control unit configured to perform control such that the autonomous vehicle travels in the autonomous driving mode, a main brake control unit configured to perform first communication with the autonomous driving control unit and to output a first control signal so that a frictional braking force is generated to a main brake by hydraulic pressure, and a regenerative braking control unit configured to perform second communication with the main brake control unit and to output a second control signal so that a regenerative braking force is generated to a motor.

A resistor includes an elongated cylindrical body having nodes and elongated members. The elongated members interconnect the nodes to form openings between the nodes and the elongated members for the flow therethrough of a cooling fluid. The body is configured to receive electric current from a powered system and to conduct and provide electric resistance to the electric current to dissipate at least part of the electric current as heat from the body. The body may be coupled with at least one other resistor of the powered system in one or more of a parallel or series arrangement in an electric circuit.

This power supply device is provided with: a primary power supply system for supplying power to a motor for rotary-driving a running wheel; a voltage converter unit for converting voltage by being supplied with a part of the power from the primary power supply system; a secondary power supply system for supplying electric power converted by the voltage converter unit to a steering device; and a primary backup power supply for supplying power to the voltage converter unit. The primary backup power supply makes it possible to supply the power to the voltage converter unit when the voltage of the power detected by a VD of the primary power supply system becomes smaller than a predetermined value.

A brake apparatus using an electric booster may include: an electric booster connected to a master cylinder and configured to pressure a push rod by pressurizing a reaction disk using an electromotive force of a motor with a pedal stepping force of a driver who steps on a brake pedal, and pressurize a piston of the master cylinder through the push rod; and a control unit configured to compare required brake pressure by the pedal stepping force of the driver and current brake pressure by the motor control to set pressure, and perform cooperation control through an ESC (Electronic Stability Control) and cooperation control through the electric booster.