99results about "ESP control systems" patented technology

The invention relates to the field of vehicle engineering and discloses an electric power-assisted braking system with composite functions. The electric power-assisted braking system comprises a brake pedal displacement sensor, a brake pedal, a pedal travel simulator, an electric power-assisted assembly, a main cylinder, a wheel cylinder, a hydraulic control unit, a liquid storage tank, a motor, a deceleration and torque increment mechanism, an electronic control unit, a normally open electromagnetic valve, a normally closed electromagnetic valve and a vehicle-mounted other sensor. By designing the pedal travel simulator, decoupling of friction braking force and regenerated braking force can be achieved, and continuous variable crural feeling is provided; a motor assisting device, a brake anti-lock system and the hydraulic control unit can be integrated, and an active braking function is achieved; and no interference exits between motor input and driver input, active braking can be achieved through the motor, and the electric power-assisted braking system can serve as a brake actuating mechanism of intelligent automobiles and unmanned automobiles.

A brake system has a wheel brake and is operable under a non-failure normal braking mode and a manual push-through mode. The system includes a master cylinder operable by a brake pedal during a manual push-through mode to provide fluid flow at an output for actuating the wheel brake. A first source of pressurized fluid provides fluid pressure for actuating the wheel brake under a normal braking mode. A secondary brake module includes a plunger assembly for generating brake actuating pressure for actuating the wheel brake under the manual push-through mode.

An electronic brake system of the present disclosure is disclosed. The an electronic brake system may include a reservoir to store oil: a master cylinder having a master piston connected to a brake pedal and a master chamber for discharging oil by a displacement of the master piston; a hydraulic pressure supply apparatus generating hydraulic pressure by an electrical signal output corresponding to a displacement of the brake pedal to supply to wheel cylinders of the respective wheels; a hydraulic control unit transmitting the hydraulic pressure discharged from the hydraulic pressure supply apparatus to the wheel cylinders of the respective wheels; and a redundancy control apparatus generating hydraulic pressure using a motor and a pump to transmit to at least one of the wheel cylinders.

The invention relates to a hydraulic braking system having energy feedback and ESP functions and a control method of the hydraulic braking system. Two oil paths arranged in an X shape in a pressure regulating module in the hydraulic system are provided with identical devices and have the identical control mode, and only the first oil path is taken as an example and is characterized in that a first pedal simulator, a third normally-open valve and a first hydraulic branch are arranged on a pipeline between a first normally-closed valve and an inlet of a first oil pump, one end of the first pedal simulator is connected with one end of the first normally-closed valve, the other end of the first pedal simulator is connected with the inlet of the first oil pump through the third normally-open valve and the first hydraulic branch in sequence; a first orifice, a third one-way valve, a first oil storage tank and a third normally-closed valve are sequentially arranged on the first hydraulic branch. A fourth one-way valve is arranged on a pipeline between the first normally-closed valve and a first pressure increasing valve, and a fourth normally-open valve is arranged on a pipeline between a first normally-open valve and the first pressure increasing valve.

The invention provides a vehicle control method and device and a controller. The method is applied to a vehicle which comprises an automatic emergency braking system (AEB). The method comprises the steps that when a starting signal which instructs that emergency braking is started and is sent by the AEB is received, whether or not a steering driving operation which is input by a driver is receivedis detected; when the steering driving operation is detected, a first control signal for stopping emergency braking is sent to the AEB. According to the vehicle control method and device, the problems are solved that the auxiliary driving effect of the AEB of an existing vehicle is not good and safe driving of the vehicle cannot be guaranteed.

A method in which the driving behavior of a vehicle is influenced depending on surroundings data in order to support an evasive maneuver as soon as a risk of collision is detected using the data from surroundings sensors and vehicle sensors. The vehicle has an electronically regulated braking system which allows a driver-independent build-up and a modulation of the braking forces on the individual wheels of the vehicle, and a steering input by the drive is supported in the event of a detected risk of collision by a driver-independent braking intervention. A brake slip of at least one wheel of the vehicle is limited to a first slip threshold in a first phase of the evasive maneuver and to a second slip threshold in a second phase of the evasive maneuver, wherein the first slip threshold is smaller than the second slip threshold. The invention further relates to an electronic controller.

A control system for a motor vehicle includes a central tire inflation system (CTIS) controller and at least one other vehicle system controller arranged to control a system associated with the at least one other vehicle system controller. The CTIS controller controls the CTIS to cause inflation and deflation of one or more tires and is configured to cause the CTIS to operate in a selected one of a plurality of operating modes in each of which the system is configured to set a pressure of one or more tires. The CTIS controller is configured to generate and output a first signal indicative of pressure of the one or more tires, the at least one other system controller being configured to receive the first signal and to control operation of the system associated with the at least one other vehicle system controller in dependence on the first signal.

A cruise control arrangement is provided with a cruise control speed function and where the cruise control arrangement is provided with a set cruise speed value and a set brake cruise speed value, and where the cruise control brake function is active when the vehicle travels downhill, where the cruise control arrangement is adapted to activate at least one auxiliary brake when the vehicle speed reaches the set brake cruise speed, to apply a service brake of the vehicle in order to reduce the speed of the Vehicle to a predefined first speed if the vehicle speed exceeds the set brake cruise speed when the least one auxiliary brake is delivering full brake power, where the predefined first speed is lower than the set brake cruise speed. Undesired acceleration during downhill travel can be avoided when the brake power of the auxiliary brake is not sufficient. Further, a required downshift can be delayed, which will improve the fuel consumption of the vehicle.

The present invention prevents occurrence of abnormal noise and swing of a vehicle in mitigating braking force of a steering wheel while reducing a steering load at the time of stationary steering to reduce a burden of a steering device and reducing stress accumulation due to stationary steering to reduce burdens of a tire, a suspension device and the steering device. The present invention includes a stop braking force control unit 202 that individually controls braking forces of steering wheels 51 and 52 and non-steering wheels 53 and 54 at the time of deceleration of the vehicle, and a pre-detection unit 203 that detects steering in a stopped state of the vehicle in advance, in which the stop braking force control unit executes, when the steering in a stopped state of the vehicle is detected in advance by the pre-detection unit, braking force mitigation control to decrease the braking forces of the steering wheels to be lower than the braking forces at the time of normal braking.

A piston pump assembly for a hydraulic power vehicle braking system including an electric motor, a planetary gear set, a helical gear, and a piston which is displaceable in a cylinder. To prevent the piston from rotating in the cylinder, cylinder pins are situated in grooves at an inner side of the cylinder and engage with the recesses in a flange of the piston. Due to reshaping, the grooves are closed at one end, so that the cylinder pins are axially secured.

A method for operating a motor vehicle having partial/full autonomous driving, having a plurality of wheels, a drive system for producing a drive torque at at least one of the wheels, and a brake system for producing at least one holding force for holding still at least one of the wheels, a rotational speed sensor being allocated to at least one of the wheels, which sensor produces a respective signal pulse for each of a plurality of positions of angular rotation of the associated wheel, a specifiable driving maneuver being performed as a function of the produced signal pulses. For a short path driving process starting from a standstill, the brake force is reduced until the rotational speed sensor produces a first signal pulse, and is then held at least temporarily constant until a specified number of signal pulses is produced, and subsequently is increased up to the holding force.

A brake fluid pressure control device for vehicles with bar handle which is configured to start a holding control of a fluid pressure of a wheel brake according to wheel deceleration calculated based on a wheel speed of the vehicle is provided. In the brake fluid pressure control device, the vehicle includes an acceleration sensor which is configured to detect acceleration in a front-rear direction of the vehicle, acceleration, detected by the acceleration sensor, which occurs in a rearward direction when the vehicle is decelerating is detected as a positive value, and the holding control is started when it is judged that the acceleration detected by the acceleration sensor is larger than or equal to a detection acceleration threshold value and the wheel deceleration is smaller than or equal to a wheel deceleration threshold value.

A rear wheel regenerative braking control system for vehicle, may include a brake controller; a vehicle controller; a hydraulic controller; and a motor controller, wherein the system and the method may maximize an amount of rear wheel regenerative braking while easily securing braking stability of a vehicle.

An electronic hydraulic brake device may include: a brake unit including a main brake unit configured to provide braking hydraulic pressure to a plurality of wheel cylinders through an operation of a motor, and an auxiliary brake unit connected to the main brake unit so as to be filled with high braking hydraulic pressure, and configured to provide braking hydraulic pressure to the plurality of wheel cylinders when an operation error of the main brake unit occurs; a first control unit configured to control the operation of the brake unit, and configured to control the auxiliary brake unit to operate when an operation error of the main brake unit occurs; and a second control unit configured to assist a part of the control of the main brake unit controlled by the first control unit and the control of the auxiliary brake unit.

A sensor arrangement for detecting in a contactless manner a movement of a body that is movably mounted within a housing includes the housing, a transducer configured to be non-rotatably connected to the body and move simultaneously with the body, and a measuring apparatus that is fixedly arranged and comprises a measuring element. When the body is movably mounted in the housing, the transducer is configured, in dependence upon the movement of the body, to influence at least one physical variable that is detected by the measuring element, the measuring apparatus is connected to the first housing by way of a connecting adapter that includes, on a side that is facing the first housing, a circumferential receiving contour into which a silicone bead is introduced and pressed in between the receiving contour and the housing, and the silicone bead (fixes and seals the connecting adapter on the housing.

In a solenoid valve for a hydraulic braking system, a valve body has a receiving region which at least partially accommodates a guide assembly, the valve armature running axially through at least one through-opening of the guide assembly. A mechanical detent device is formed between the guide assembly and the valve armature, the detent device releasing the valve armature when the latter is in a de-energised closed position, such that the restoring spring drives the valve armature and pushes the closing element sealingly into the valve seat to produce a sealing function, and said detent device fixes the valve armature in a de-energised open position against the force of the restoring spring in an axial detent position, such that the closing element is raised from the valve seat.

An apparatus for controlling an ABS of an ESC integrated brake system and a method thereof. The apparatus includes a main master cylinder generating hydraulic brake pressure through a piston that is moved forward/backward by an actuator that is operated when a brake pedal of a vehicle is pressed down; and a controller controlling forward/backward movement direction change of the piston by controlling a driving current that is applied to the actuator by determining whether a direction change condition according the control state of wheel pressure is satisfied, when a brake mode of the vehicle is an ABS mode and the piston has reached a predetermined direction change position for forward/backward movement direction change.

The invention provides an intelligent intervention method based on an integrated TPMS. The intelligent intervention method comprises the steps that S1, direct type TPMS real-time monitoring is conducted on tire pressure and temperature parameters, indirect type TPMS real-time monitoring is conducted on wheel speed parameters, and signals of the tire pressure, the temperature parameters and the wheel speed parameters are sent to a host machine in real time; S2, the host machine synthesizes the tire pressure, the temperature parameters and the wheel speed parameters to judge that a vehicle statebelongs to a normal state or abnormal state in real time; S3, when a vehicle is at the abnormal state of tire bursting, values of the tire pressure, the temperature parameters and the wheel speed parameters deviate from normal threshold values of the tire pressure, the temperature parameters and the wheel speed parameters, and a deviation signal is sent to an intelligent intervention system suchas an EPS system, an ESP system and an ABS system; and S4, the intelligent intervention system receives the deviation signal to conduct intelligent intervention, so that the vehicle decelerates and runs in a straight line till the vehicle is at a vehicle stopped state. According to the intelligent intervention method, when tire bursting occurs on the vehicle, the vehicle can still safely run tillthe vehicle is at the vehicle stopped state, and rollover or collision is prevented.

A brake control device of the present invention is provided with a first control unit (11) that, when the deceleration of a vehicle is increased, increases a target braking force, which is either a front wheel braking force applied to front wheels (41, 42) of the vehicle or a rear wheel braking force applied to rear wheels (43, 44) of the vehicle, and executes a first control for reducing the object braking force; and a second control unit (12) that, prior to execution of the first control, executes second control that decreases the increase gradient of the target braking force and increases the increase gradient of the front wheel braking force or the rear wheel braking force that is not the target braking force.