A method of controlling a vehicle includes, in response to vehicle speed being approximately zero and a driver braking torque request being greater than a park interlock threshold, commanding vehicle brakes to provide an augmented braking torque. The augmented braking torque has a magnitude that is greater than the magnitude of the braking torque request. The braking torque returns to the level of the driver braking torque request following completion of a gear shift event.

A valve module is provided for enabling a vehicle to control an autonomous event of the vehicle. The valve module comprises a relay valve, a first solenoid valve, and a second solenoid valve. A first control pressure can be delivered through the first solenoid valve and applied to a control port of the relay valve. In one embodiment, a second control pressure can be delivered through the second solenoid valve and combined with the first control pressure. The combined first and second control pressures are applied to the control port of the relay valve.

A Hill Start Assist (HSA) system for an off-road type vehicle includes a brake system for producing a braking force sufficient to maintain the vehicle in a stopped condition, and a control unit in communication with the brake system for controlling a brake modulator of the brake system to maintain the braking force when a manual brake actuator of the brake system is in a released position. The HSA system is operable in a ready state where the brake modulator is in an open condition and the braking force is not maintained, an activated state and a hold state where the brake modulator is in a closed condition and the braking force is maintained. The HSA system is only in the ready state upon determination by the control unit that predetermined vehicle conditions are satisfied.

A system and method for operating a brake system of a vehicle including determining if the vehicle is stopped. Determining a current brake pressure, a braking deceleration and a dynamic brake pressure corresponding to the braking deceleration. Based on the current brake pressure and the dynamic brake pressure determining a differential brake pressure. A holding brake pressure for holding the vehicle is determined based on the differential brake pressure and operating the brake system with the holding brake pressure.

A vehicle includes a powertrain and an electric parking brake. A controller activates the electric parking brake in response to the powertrain transitioning to an off state that inhibits production of propulsive torque during an ignition cycle when a vehicle speed is less than a predetermined speed and in a presence of conditions that inhibit the powertrain from transitioning to an on state that permits production of propulsive torque.

A stopping control apparatus for a vehicle includes: a braking apparatus; a gear-type automatic transmission installed in a powertrain; and a control device configured to control the braking apparatus and the automatic transmission. The control device is configured to shift, after a vehicle transitions from a travel state to a stop state, a range of the automatic transmission to a P range under a state where the braking force applied to wheels is a braking force for maintaining the vehicle in the stop state, and then reduce the braking force applied to the wheels. The control device is configured to change a decrease rate of the braking force such that the decrease rate after a time point at which a predetermined period has elapsed from a start of a decrease in the braking force is less than the decrease rate before the time point.

A method of autonomously applying an electromechanical brake booster in an electric vehicle having the electromechanical brake booster includes determining with an electronic brake control unit whether the vehicle is at a standstill in forward or reverse. It includes then sending a message from the electronic brake control unit to an electronic powertrain control unit of the vehicle that the vehicle is at standstill. It includes then responding with the electronic brake control unit to a message from the electronic powertrain controller that a hold is to be applied by having the electronic powertrain controller apply the autonomous hold by applying electromechanical brake booster.

A vehicle brake hydraulic pressure control apparatus includes, as a controller, acceleration acquiring section for acquiring an output value of an acceleration sensor detecting a front-rear direction acceleration of a vehicle, limiting section for limiting the magnitude of the output value acquired by the acceleration acquiring section within a predetermined limit value, a filter (control acceleration calculation section) limiting a change of a value output by the limiting section in a predetermined direction, and holding section for determining a holding pressure according to a value output by the filter and, based on the holding pressure, holding the braking force.

A hill-hold control system for a vehicle. The hill-hold control system includes a first wheel brake (120A, 120B), a second wheel brake (120C, 120D), a braking indicator (brake pedal), a drive away indicator (accelerator), and a controller (130). The controller is configured to determine that the vehicle is at standstill, detect from the braking indicator that braking is no longer desired, adjust a braking pressure at the first wheel brake, adjust a braking pressure at the second wheel brake, detect from the drive away indicator an operator's desire to drive away, and when the operator's desire to drive away is detected, removing the braking pressure at the first wheel brake and the braking pressure at the second wheel brake.

Backstopping Brake System (BBS) is a part with two original and Accessory natures that can be installed on all manual transmission cars which their engine power is transmitted into forward wheels. By installing the system on vehicle forward wheels axle (plus (P)), when plus rotates around its axle in a reverse motion of engine, it locks the plus (P) and prevents unnecessary reverse motion of vehicle. This system can be activated or inactivated from cabin inside wirelessly through control remote system (2-3) or by wire. In the case of necessary reverse motion, this system is inactivated by pulling back its pawl. For safety, when vehicle has a severe shock, this system will be separated from joint point of vehicle body.