Wheel speed sensors detect wheel speeds of a plurality of wheels (i.e., a wheel speed of a front left wheel, a wheel speed of a front right wheel, a wheel speed of a rear left wheel, and a wheel speed of a rear right wheel), respectively. A braking control apparatus controls driving of an electric motor. The braking control apparatus drives the electric motor to increase a braking force when the wheel speed sensors detect wheel speed pulses from at least two wheels after a start to maintain the braking force.

The invention has a purpose of providing a controller and a control method capable of improving operability at a time when a brake force that is retained in hill-hold control is reduced.

A control section 7 for executing the hill-hold control that retains the brake force on an inclined road surface is provided. The control section 7 cancels retention of the brake force in the case where it is determined on the basis of a detection signal of a first detection mechanism 8 that a first operation section for operating a brake mechanism is operated when the brake force is retained in the hill-hold control.

A method for activating a parking brake of a motor vehicle, wherein the parking brake is activated automatically if the motor vehicle is at a standstill or its ignition is switched off. The motor vehicle and/or the environment is detected subsequent to the automatic activation of the parking brake, and that said current situation is compared to stored situations of the motor vehicle and/or the environment, for which a rolling capability of the motor vehicle at a standstill and/or with its ignition switched off has been designated.

Motor vehicles and methods for operating motor vehicles are disclosed herein. An example motor vehicle includes an electric drive, an electrical brake including one or more braking actuators, a drive controller communicatively coupled to the electric drive and the electrical brake, and a brake controller communicatively coupled to the electrical brake. The drive controller is to cause the one or more braking actuators to actuate in response to a signal indicating a failure of the brake controller.

A method for a speed controller for a motor vehicle, wherein a speed prescription is set by the driver and automatic adjustment of the speed to the speed prescription is carried out at least by setting an engine torque prescription, wherein at the start of the speed control the engine torque prescription is set to an initial value, wherein the initial value is determined in accordance with at least one parameter.

At the time of starting a vehicle, if the vehicle is stopped even without an operation of braking the vehicle, a drive force to be generated before an actual start of the vehicle is limited to or below a predetermined maximum drive force.

A control system for a motor vehicle automatically activates or deactivates a parking lock or an automatic roll-away prevention facility. The control system has at least one electronic control unit which is designed such that limited maneuvering operation is possible within set boundary conditions in accordance with predefined embarking conditions and in accordance with predefined disembarking conditions, an identified intentional maneuvering demand of the driver after prior automatic roll-away prevention of the vehicle being defined as a predefined embarking condition. The limited maneuvering operation may be activatable both in the case of an activated motor and in the case of a deactivated motor proceeding from a secured state. Depending on the differently defined disembarking conditions that are satisfied, a transition can be made from the limited maneuvering operation either into the secured state, or driving operation can be permitted if the defined conditions for the automatically secured state are no longer present.

A parking brake apparatus is provided for a vehicle having components of a parking brake system. The parking brake apparatus comprises a parking brake controller arranged to (i) obtain a first signal indicative of whether a hill start assist system is installed on the vehicle, and (ii) provide one or more control signals to be applied to components of the parking brake system to apply parking brakes when the first signal is indicative of a hill start assist system installed on the vehicle is present and a second signal indicative of the hill start assist system being activated is received.

A park brake system for adjusting a tension in a brake cable that is coupled to a park brake. The park brake system can include a driver that is communicatively coupled to a microcontroller, and an actuator that is rotatably displaceable by operation of the driver. An equalizer assembly can be linearly displaced along the rotating actuator to adjust a tension in the brake cable. The microcontroller can monitor a current being drawn by the driver as the driver is operated, and generate instructions to cease operation of the driver upon the current reaching a predetermined current threshold that corresponds a maximum force that is to be applied by the park brake. The microcontroller can also, when the park brake is being released from a set position, count pulses outputted by an encoder in connection with determining whether the park brake has reached a running clearance position.

Method and system may be configured to determine a stationary time period during which a vehicle has remained stationary. The method and system may be further configured to enable a parked function of the vehicle in response to determining that the stationary time period exceeds a designated threshold. While the parked function is enabled, the vehicle applies a braking effort to the vehicle in response to detecting movement of the vehicle.