A system for parking control of a vehicle in which a transmission parking configuration is omitted is provided. The system includes a shift by wire device that requests a parking control of the vehicle when a parking stage is input by an operation of a driver. An electronic parking brake operates a brake installed on a drive wheel via a relay which is connected to be in a parking brake state when the electronic parking brake receives the parking control request from the shift by wire device. The shift by wire device switches the relay to directly operate the brake to be in the parking brake state when the shift by wire device receives a failure event, which indicates that a normal operation of the electronic parking brake is impossible, from the electronic parking brake.

Disclosed are an electronic control brake system and a method for controlling the same. The method for controlling an electronic control brake system of a vehicle according to the present disclosure, in which a service brake is configured to provide a braking force by hydraulic pressure to each wheel and a drum in hat (DIH) brake is configured to provide a parking brake force to each of the wheels by pulling a parking cable, the method including determining whether rocking of the vehicle occurs due to a weight shift of the vehicle at the DIH brake on the basis of operation information of an electronic parking brake (EPB) system configured to adjust a braking force of the DIH brake, state information of a transmission gear, and state information of a brake pedal; and when the rocking of the vehicle is determined to occur, automatically operating the service brake.

An autonomous or semi-autonomous vehicle is provided that is capable of braking itself without a driver depressing the brake pedal. The vehicle has a powertrain that includes an engine, a transmission, and a motor with a connected battery to provide regenerative braking capabilities. Friction brakes are provided to apply when necessary, such as when the battery has a high state of charge and further regenerative braking would overcharge the battery. The braking may be activated in response to a sensor detecting a distance to an object in front of the vehicle. A vehicle controller is programmed to automatically control amounts of regenerative braking and friction braking during a braking event based on a comparison between a regenerative torque limit of the powertrain and a desired brake torque over the brake event to safely brake the vehicle during the brake event.

Methods for transitioning a braking system between primary and fallback modes are provided. A method in accordance with the present disclosure may include identifying a failure in the functionality of the primary braking system, and, upon identifying the failure, mitigating an abrupt increase in a pedal travel distance required to brake or otherwise decelerate the vehicle so as to provide smooth transition from a primary braking mode to a fallback braking mode. The mitigating the increase in the pedal travel distance may include initiating a transition to the fallback braking mode, activating at least one of a plurality of transition braking modes, and gradually increasing the pedal travel distance by deactivating at least one of the previously activated transition braking modes.

A method of operating a drive-train of a vehicle having a drive engine, a motor vehicle transmission, at least one drive axle and a further axle that can be engaged to drive. In context of a function, a connection between the drive engine and the at least one drive axle of the vehicle is automatically interrupted, and the function is automatically activated when certain conditions exist. For the activation of the function, a service brake of the vehicle must be actuated and, as a condition, the vehicle must be stopped. To check whether operation of the vehicle in the all-wheel mode is necessary, when the function is carried out, a brake pressure is determined and, if the brake pressure exceeds a brake pressure limit value, the driving engagement of the further axle is carried out automatically as the function is deactivated for re-starting the vehicle.

A method for automatic electronic control of a brake system in a vehicle includes reading a request signal for automatic electronic control of actuators in the vehicle. At least one of the actuators has an influence on actual longitudinal vehicle dynamics of the vehicle, and requests that are to be implemented by the actuators for realizing automatically requested target longitudinal vehicle dynamics are transmitted via the request signal. The method further includes plausibility-checking the request signal to establish whether the requests are, or can be, implemented completely or without error by the actuators, taking into account a tolerance, and determining a correction deceleration and/or a correction velocity if the implementation of at least one of the requests has not taken place, or cannot take place, completely or without error, taking into account the tolerance, in order to specify corrective braking.

A dual mass flywheel protection system includes an engine coupled to a transmission using a dual mass flywheel defining a drive train. A gear determiner identifies a present operational gear. A filtered engine speed is available. A torque reduction module applies the present operational gear and filtered engine speed producing signals limiting an engine torque to reduce engine torque variations. A first torque limitation option limits engine torque when the drivetrain is coupled, dependent on an engine rpm, which is related to an actual gear selected. A second torque limitation option determines an engine torque reduction during an emergency braking maneuver while an anti-lock brake (ABS) system is active. An engine shut-off module produces an output signal shutting off the engine upon initiation of one of multiple engine shut-off module outputs, and is active when an engine torque limitation due to a low engine rpm is not present.

A vehicle includes a fault-tolerant braking system that controls a brake assembly which is configured to adjust a braking force applied to one or more wheels. The fault-tolerant braking system further includes a brake-by-wire (BBW) system and a vehicle control module (VCM). The BBW system is configured to control the brake assembly in response to a braking request. The VCM is configured to detect a fault of at least one of the brake assembly and the BBW system. In response to detecting the fault, the VCM selectively operates the vehicle between a normal operating mode and at least one degraded driving mode that limits operation of at least one of the vehicle engine and the vehicle transmission compared to the normal operating mode.

A SBW-ECU includes: a P unreleasable region determination portion configured to determine whether a road surface slope Sr at a vehicle position and an output voltage Volr of an auxiliary battery fall within a predetermined parking lock unreleasable region or not; and a P release request rejection portion configured to reject a P release request in a case where P release request rejection conditions to are all satisfied, including a fact that the P unreleasable region determination portion determines that the road surface slope Sr at the vehicle position and the output voltage Volr of the auxiliary battery fall within the parking lock unreleasable region (the P release request rejection condition (c) is satisfied).

A braking controller and method in a towing vehicle towing one or more towed vehicles as a combination vehicle provides brake control of the one or more towed vehicles based on a level of braking force applied to the towing vehicle. A non-enhanced braking mode applies a first level of braking force to the towed vehicles in a predetermined reduced proportion relative to the level of braking force applied to the towing vehicle, and an enhanced braking mode applies a second level of braking force to the towed vehicles greater than the first level of braking force. A controller deceleration command input receives a deceleration command signal which is compared against predetermined threshold deceleration rate value or against a current deceleration value being executed by the combination vehicle and, based on a result of the comparisons, either the enhanced or the non-enhanced braking modes are implemented by the controller.