Patent classifications
B60T2250/04
Systems and methods for smooth stopping of a vehicle
A system includes a sensor designed to detect data corresponding to a speed of a vehicle and a motor designed to convert electrical energy into driving torque. The system also includes a first wheel coupled to the motor and designed to propel the vehicle in response to receiving the driving torque along with a second wheel. The system also includes a brake coupled to at least one of the first wheel or the second wheel and designed to apply a braking torque to the at least one of the first wheel or the second wheel. The system also includes an ECU coupled to the sensor and the motor and designed to control the motor to begin controlled braking by applying the driving torque to the first wheel to at least partially offset the braking torque when the speed of the vehicle is at or below a braking threshold speed.
ADAPTIVE REGENERATION SYSTEMS FOR ELECTRIC VEHICLES
Systems and methods are disclosed for adaptive regeneration systems for electric vehicles. In one embodiment, an example method may include determining, by an adaptive regeneration system, that an electric vehicle is decelerating, determining an output voltage of a power source at the electric vehicle, determining that a voltage potential of a battery system at the electric vehicle is greater than the output voltage, and causing the voltage potential of the battery system to be modified to a value equal to or less than the output voltage.
VEHICLE BEHAVIOR CONTROL DEVICE
The vehicle behavior control device comprises a brake control system (18) capable of applying different braking forces, respectively, to right and left road wheels of a vehicle (1). The vehicle behavior control device further comprises: a steering angle sensor (8); a vehicle speed sensor (10); a yaw rate sensor (12); and a yaw moment setting part (22) in PCM (14) configured to decide a target yaw rate of the vehicle based on a steering angle and a vehicle speed, and set, based on a change rate of a difference between an actual yaw rate and the target yaw rate, a yaw moment oriented in a direction opposite to that of the actual yaw rate of the vehicle, as a target yaw moment, whereby the brake control system can regulate the braking forces of the road wheels so as to apply the target yaw moment to the vehicle.
Brake fade and brake capacity gauge
A controller can display via an instrument cluster a brake capacity based on a temperature of friction material of at least one brake of a vehicle and a predicted brake fade threshold that is derived from a speed, mass, and current angle of inclination of the vehicle.
ELECTRO-HYDRAULIC BRAKE SYSTEM AND METHOD
An electro-hydraulic brake system includes a first brake input that generates a first brake input signal and a second brake input that generates a second brake input signal. The system also includes a first valve that releases hydraulic fluid to control a first brake and a second valve that releases the hydraulic fluid to control a second brake. The system includes a speed sensor that generates a speed signal indicative of a speed of a work vehicle. A controller receives the speed signal, the first brake input signal, and the second brake input signal, determines the speed of the work vehicle based on the speed signal, and compares the speed of the work vehicle to a threshold speed. The controller synchronizes actuation of the first and second valves in response to the speed being in excess of the threshold speed to control the first and second valves.
METHOD AND APPARATUS FOR MONITORING A VEHICLE BRAKE
A braking system for a vehicle includes devices that are configured to apply braking force to a wheel in response to a braking command. A first sensor is disposed to monitor a parameter associated with the braking force, and a spatial sensor is disposed to determine a linear range between the vehicle and a predefined locus point. A controller is operatively connected to the braking system and in communication with the first sensor and the spatial sensor. The controller detects a braking event and determines a time to stop and an applied braking force during the braking event, which is integrated over the time to stop. The braking system is evaluated based upon the total stopping distance and the integrated applied braking force during the braking event. A fault associated with the braking system is determined based upon the evaluation of the braking system.
METHOD FOR ADJUSTING BRAKE PRESSURES, BRAKE SYSTEM OF A MOTOR VEHICLE FOR CARRYING OUT SUCH METHOD, AND MOTOR VEHICLE COMPRISING SUCH A BRAKE SYSTEM
A method for operating an electronic brake system for motor vehicles includes determining, by a brake control unit, respective brake pressures acting on wheel brakes by controlling a pressure distribution ratio of brake pressures acting on wheel brakes of a front axle to brake pressures acting on wheel brakes of a rear axle of the motor vehicle. The method further includes receiving, by the brake control unit, driver brake requests determined by a driver of the motor vehicle and/or external brake requests and determining, by the brake control unit, appropriate brake pressures. The brake control unit takes into consideration an initial pressure distribution ratio value, which is ascertained in a driver braking mode or in a pressure control mode and is stored and kept available for later consideration.
METHOD OF CHANGING ABS CONTROL MODE BY USING ANALYSIS OF DRIVING PATTERN
A method of changing an anti-lock brake system (ABS) control mode includes: determining, by a controller, whether a first stage of an electronic stability control (ESC) of the vehicle is in an off state and a launch control of the vehicle is in an on state, and determining, by the controller, whether a driver intends to slow down an operation of the ABS installed in the vehicle; and when it is determined that the driver intends to slow down the operation of the ABS, comparing, by the controller, revolutions per minute (RPM) of an engine of the vehicle, a vehicle acceleration speed, a vehicle speed, and a steering angle with predetermined threshold values, respectively, and when each of the comparison results is satisfied, changing, by the controller, an ABS general control mode to an ABS sport control mode which slows down the operation of the ABS.
VEHICLE TRAVEL CONTROL DEVICE
A vehicle travel control device includes a plurality of wheel speed detection devices and a control unit. A plurality of wheel speed detection devices detects the wheel speed of each of the plurality of wheels. The control unit performs vehicle travel control (anti-skid control) based on the wheel speed detected by the wheel speed detection device. The control unit determines whether the wheel speed of the first wheel is abnormal based on the relationship between the wheel speed of the first wheel with the highest wheel speed and the wheel speed of the second wheel with the second highest wheel speed. Abnormality determination is performed to determine whether there is. When the vehicle is braking, the control unit does not make an abnormality determination when the wheel speed increase rate of the first wheel is less than the increase rate reference value.
Methods and Systems for Implementing a Redundant Brake System
Example embodiments relate to triple redundant brake systems for trucks and other types of vehicles. Disclosed systems offer additional redundancy for braking applications by incorporating a third service brake actuator (e.g., a third ECU), which may be installed parallel to the second controller (e.g., a second ECU). In some examples, the third service brake actuator is an electronically activatable pressure valve and can be implemented using pneumatic select-high valves. These valves can be used to perform a mechanical max arbitration between pressure provided by the second controller and the third controller.