Abstract:
A method of controlling braking in an adaptive cruise control (ACC) of a vehicle. The method includes determining that braking is needed, including determining an amount of braking force needed, providing an indication to the brake system that braking is needed, filling the brake system with brake fluid at a predetermined rate to reduce pump noise, setting a delay equal to the amount of time needed to fill the brake system with fluid, applying a brake pad to a brake disc at the amount of braking force needed after waiting the delay, comparing the amount of braking force needed to the amount of braking force actually occurring, and reducing the delay to zero when the amount of braking force needed is less than or equal to the amount of braking force actually occurring.
Abstract:
A method of operating a hydraulic brake system is described. A method of operating a hydraulic brake system of a motor vehicle having a mechatronic brake booster to boost a hydraulic pressure generated in a brake master cylinder of the brake system by a brake pedal of the motor vehicle determines whether a propulsion request is present during operation of the motor vehicle and actuates the mechatronic brake booster when a propulsion request has ended or been substantially reduced. During a predetermined time interval after the propulsion request has ended or been reduced, the mechatronic brake booster is operated at a minimum intensity such that no braking effect occurs during the predetermined time interval, unless a braking request occurs.
Abstract:
For a vehicle having a brake system, a driver assistance system includes a detection system having at least one sensor configured to output measurement signals, and a control unit configured to receive at least one measurement signal, determine whether the vehicle is in a critical state based on measurement signal(s), and output an external brake request signal to a brake control device of the brake system for priming or biasing the brake system when the vehicle is determined to be in the critical state. The external brake request signal comprises an acceleration setpoint value signal having a higher acceleration setpoint value than a current actual acceleration value of the vehicle.
Abstract:
Methods of assessing driver behavior include monitoring vehicle systems and driver monitoring systems to accommodate for a driver's slow reaction time, attention lapse and/or alertness. When it is determined that a driver is drowsy, for example, the response system may modify the operation of one or more vehicle systems. The systems that may be modified include: visual devices, audio devices, tactile devices, antilock brake systems, automatic brake prefill systems, brake assist systems, auto cruise control systems, electronic stability control systems, collision warning systems, lane keep assist systems, blind spot indicator systems, electronic pretensioning systems and climate control systems.
Abstract:
Methods of assessing driver behavior include monitoring vehicle systems and driver monitoring systems to accommodate for a driver's slow reaction time, attention lapse and/or alertness. When it is determined that a driver is drowsy, for example, the response system may modify the operation of one or more vehicle systems. The systems that may be modified include: visual devices, audio devices, tactile devices, antilock brake systems, automatic brake prefill systems, brake assist systems, auto cruise control systems, electronic stability control systems, collision warning systems, lane keep assist systems, blind spot indicator systems, electronic pretensioning systems and climate control systems.
Abstract:
The invention relates to a method for controlling/regulating the boosting of a brake force of a brake system (1), in particular of a power-assisted brake system (1) of a motor vehicle, wherein the brake system (1) comprises a brake force booster (100) having an actuator (130) by means of which a variable additional force (F100) can be imparted to a master brake cylinder (200) of the brake system (1), wherein if a relatively high additional force (F100) is demanded, a partial volume of a brake fluid is discharged from a brake circuit (300) of the brake system (1) in such a way that the actuator (130) of the brake force booster (100) can be placed relatively quickly into a position in which it can impart a greater additional force (F100) to the master brake cylinder (200). The invention also relates to a brake force booster for boosting a brake force of a brake system (1), in particular of a power-assisted brake system (1) of a motor vehicle, having a gearing (120) which can be driven by an electric motor (110), wherein the gearing (120) has an actuator (130) by means of which a piston (210) of a master brake cylinder (200) can be actuated, and wherein the gearing (120) is a cam mechanism (120), in particular an asymmetrical cam mechanism (120), having a control surface (125) or a control groove.
Abstract:
Methods of assessing driver behavior include monitoring vehicle systems and driver monitoring systems to accommodate for a driver's slow reaction time, attention lapse and/or alertness. When it is determined that a driver is drowsy, for example, the response system may modify the operation of one or more vehicle systems. The systems that may be modified include: visual devices, audio devices, tactile devices, antilock brake systems, automatic brake prefill systems, brake assist systems, auto cruise control systems, electronic stability control systems, collision warning systems, lane keep assist systems, blind spot indicator systems, electronic pretensioning systems and climate control systems.
Abstract:
A system and method for providing mechanical time dilation by pre-braking a vehicle in the event there is a collision threat so as to reduce or eliminate the need for full automatic braking if the collision becomes imminent. The system calculates a time dilation deceleration to either maintain a time to collision at a previous value before the calculation or at a predetermined value. The system also estimates a projected closing speed of the vehicle to the object at a distance that would require full automatic braking to prevent a collision. The system then determines whether the time dilation deceleration is greater than a decelerating threshold and, if so, provides automatic vehicle braking at the threshold until the vehicle comes to a full stop. If the time dilation deceleration is not greater than the threshold, then the system provides automatic braking to decelerate the vehicle at the time dilation deceleration.
Abstract:
A method and a device for automatic triggering of deceleration of a vehicle for preventing a collision, which is accomplished by the fact that a variable, which represents a probability of collision with another vehicle, must exceed a predefinable threshold value, and the threshold value is variable as a function of the driver's response, the current driving situation, or the ambient situation. To determine the change in the threshold value, signals from a steering angle sensor, a brake pedal sensor, an accelerator pedal sensor, a device for determining the speed of the vehicle, a device for determining the uphill or downhill slope of the road, a device for determining the vehicle yaw rate, a device for determining the vehicle float angle or a device for detecting stationary and moving objects in the vicinity of the vehicle, in particular in the area in front of the vehicle, are analyzed.
Abstract:
A vehicle driving control device is configured to improve response to driver braking operation and shorten the free running distance by applying a preliminary braking force to a braking device when a preceding vehicle can no longer be recognized during preceding vehicle following control.