Patent classifications
B60T8/17555
METHOD AND DEVICE FOR CONTROLLING VEHICLE LATERAL DYNAMICS
Technologies and techniques for producing a yawing movement in order to control the driving dynamics of a vehicle. A target yawing movement of the vehicle is determined from a target yaw rate preset by a preset steering angle, such that the vehicle can pass through the preset steering angle at the current vehicle speed, and the target yawing movement being divided into a steering yawing movement produced by the steering system, a rolling yawing movement and a drive yawing movement, wherein the rolling yawing movement is divided into individual rolling yawing movements of the individual wheels, which can be variably set.
VEHICLE
In a vehicle, application of hydraulic pressure in a hydraulic braking device is started, when an accelerator is turned on, and the accelerator is predicted to be turned off, and engine braking feeling is predicted to become insufficient, the engine braking feeling being deceleration feeling given to a driver when the accelerator is turned off and an engine brake is operated, and a predetermined condition that prediction time until the accelerator is turned off is shorter than dead time of a hydraulic pressure response of the hydraulic braking device is established. The hydraulic braking device generates a negative jerk in the vehicle when the accelerator is turned off upon lapse of dead time after application of the hydraulic pressure in the hydraulic braking device is started.
BRAKE SYSTEM HAVING SPINDLE/NUT ASSEMBLY PROVIDING SOFT STOP
A brake system comprises: a caliper housing having a bore formed therein; a brake piston slidably positioned in the bore of the caliper housing; and a spindle/nut assembly associated with the brake piston. The spindle/nut assembly comprises: a spindle; a spindle nut operably engaged with the spindle; and a disc type spring comprising a curved plate radially surrounding the spindle. The disc type spring is disposed between the spindle nut and the spindle to provide a resilient force between the spindle nut and the spindle. The disc type spring prevents the hard stop of the brake piston to the spindle/nut assembly and provide a soft stop. The disc type spring decreases a shock to the brake system, increases the durability of the spindle/nut assembly, and decrease the cost of the brake system.
Comfort Brake Control System and Control Method for Vehicle Technical Field
A comfort brake control system and a brake method for a vehicle is disclosed. The comfort brake control system includes: a human-machine interaction interface, configured to provide an interface of multiple optional comfort brake levels of the vehicle, and receive selection of one of the multiple comfort brake levels to switch a current comfort brake level of the vehicle, wherein each comfort brake level comprises a brake parameter corresponding to the comfort brake level, and the brake parameter comprises at least brake pressure and a brake pressure change rate of at least one brake cylinder of the vehicle; and a comfort brake module, configured to determine whether a current state of the vehicle meets a predetermined switching condition; and when it is determined that the switching condition is met, obtain a brake parameter corresponding to a selected comfort brake level, and transmit the obtained brake parameter to a brake system of the vehicle by using a vehicle bus of the vehicle.
MASTER BRAKE CYLINDER FOR A HYDRAULIC VEHICLE BRAKE SYSTEM
A hydraulic block of a slip regulation system of a hydraulic external force vehicle brake system that has a master brake cylinder bore and forms a master brake cylinder. In order to prevent a hard impact of a master brake cylinder piston on an end stop when the master brake cylinder is released, in particular when there is a sudden release, for example when the driver's foot slips off the brake pedal, the present invention provides a hydraulic return flow damper that is integrated in the master brake cylinder piston.
Power hop anticipation and mitigation
Longitudinal acceleration, intended travel angle, wheel speed, and requested drive torque signals are measured for a vehicle. The longitudinal acceleration, intended travel angle, wheel speed, and requested drive torque signals are then evaluated. A brake torque is calculated as a function of a propulsive torque, wherein the propulsive torque is produced by a power source for the vehicle. The brake torque is applied when the longitudinal acceleration signal exceeds a longitudinal acceleration threshold, the intended travel angle signal is between intended travel angle limits, the wheel speed signal is less than a minimum speed threshold, the requested drive torque signal exceeds a requested drive torque threshold, and a torque threshold is exceeded.
Vehicular behavior control apparatus
A vehicular behavior control apparatus in which a control unit that controls a driving device and a braking device is configured to calculate a target yaw moment and a target deceleration of the vehicle for ensuring stable behavior of the vehicle during non-braking turning, to calculate a first vehicle longitudinal force applied to a turning inner wheel to achieve the target yaw moment and a second vehicle longitudinal force necessary to achieve the target deceleration, to control, when the first vehicle longitudinal force is equal to or less than the second vehicle longitudinal force, the driving device so as to generate a driving force equal to a value obtained by subtracting the second vehicle longitudinal force from a driver-requested driving force and adding the first vehicle longitudinal force, and to apply the first vehicle longitudinal force to the turning inner wheel.
Control device display indicators for one-pedal function and automatic brake hold function
A control device configured to control a vehicle is provided. The device comprises: a traveling control unit capable of executing stop hold control in an automatic brake hold function and a one-pedal function; and an output control unit capable of displaying a first indicator indicating that the one-pedal function is enabled and a second indicator indicating that the automatic brake hold function is enabled. The traveling control unit exclusively executes the automatic brake hold function and the one-pedal function. The output control unit executes at least one of ending display of the second indicator and displaying the first indicator when the one-pedal function is enabled instead of the automatic brake hold function and/or ending display of the first indicator and displaying the second indicator when the automatic brake hold function is enabled instead of the one-pedal function.
Brake load balance and runway centering techniques
A method for controlling brakes includes receiving, by a controller, a first wheel speed from a first wheel speed sensor of a first wheel arrangement, receiving, by the controller, a second wheel speed from a second wheel speed sensor of a second wheel arrangement, calculating, by the controller, a pressure correction, and adjusting, by the controller, a pressure command for at least one of the first wheel arrangement and the second wheel arrangement.
Braking force control apparatus for vehicle
A braking force control apparatus for a vehicle has a friction braking device, a regenerative braking device, and a control unit for controlling the friction braking device and the regenerative braking device. The control unit is configured to calculate a target pitch gain of the vehicle so that a pitch gain of the vehicle gradually changes in accordance with a difference between a target braking force of the vehicle and a regenerative braking force when the target braking force of the vehicle exceeds a maximum regenerative braking force and changes within a range larger than the maximum regenerative braking force, and to control a front-rear wheel distribution ratio of a friction braking force so that the pitch gain of the vehicle becomes the target pitch gain and the friction braking force becomes the difference between the target braking force of the vehicle and the maximum regenerative braking force.