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7325886 |
Vehicular brake control system
In a vehicular brake control system in which pressure upstream of a plurality of pressure increase control valves is variable, a brake control ECU sets a value of a current supplied to a solenoid...
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7303241 |
Pump drive motor control apparatus
A pump drive motor control apparatus controls a motor used for driving a hydraulic pump. Every time the supply of electricity to the motor is resumed (every time the motor control signal changes...
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7185956 |
Performance hydraulic systems for hybrid brake system
A braking system including a pre-charge with a plurality of pumps disposed in parallel with respect to one another. The pumps can direct pressurized brake fluid to the brakes during a controlled...
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7055916 |
Brake hydraulic pressure control apparatus for vehicle
A brake hydraulic pressure control apparatus includes a pressure-increasing valve disposed between a master cylinder and a wheel cylinder; a pressure-reducing valve disposed between the wheel...
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7052094 |
Vehicle brake system
A vehicle brake system includes a master cylinder having a housing defining a bore therein. A boost piston and a primary piston are slidably disposed in the bore. The master cylinder has a boost...
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7000997 |
Control unit for a wheel brake of a motor vehicle
An actuating unit ( 1 ) for a wheel brake ( 2 ) of a motor vehicle has a hydraulic pump ( 14 ) that can be driven at variable speeds by an electric motor ( 13 ). In addition, a cylinder-piston unit...
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6976741 |
Brake control system for vehicle and method for controlling brake system
In a brake control system for a vehicle, a target wheel cylinder pressure of each wheel is calculated in accordance with a braking force applied by the driver, a brake control mode is determined to...
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6938965 |
Vehicle hydraulic braking system with an active simulator
A hydraulic braking apparatus for a motor vehicle having a service braking system (A) fed by a central hydraulic unit ( 3 ) and an emergency braking system (B). A simulator (M) resists a forward...
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6913326 |
Apparatus for increasing brake cylinder pressure by controlling pump motor and reducing the pressure by controlling electric energy applied to control valve
Hydraulic pressure control apparatus for controlling a pressure of a brake cylinder pressure, including a pump device connected to the brake cylinder and including at least one set of a pump for...
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6896338 |
Hydraulic braking system featuring selectable increased pump flow
An automotive braking system controls the flow of pressurized brake fluid from a tandem master cylinder to several wheel brakes via a pair of braking circuits. Each circuit features a pressure...
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6851763 |
Hydraulic brake system
A hydraulic brake system for vehicles with a brake pressure generator unit which is operable by introducing an actuating force by way of an actuating device that includes a first hydraulic chamber...
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6796619 |
Hydraulic brake system with a precharging device
The return pumps of brake systems with a precharging device are greatly stressed by the precharging pressure and subjected to premature wear. Significant leakage occurs in the long run which will...
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6761420 |
Proportional micromechanical device
The present invention provides a proportional microvalve having a first, second and third layer, and having high aspect ratio geometries. The first layer defines a cavity with inlet and outlet...
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6736465 |
System for estimating brake-fluid pressure
A brake control system includes an ECU having an estimate part which is so constructed as to: totalize an influent amount of fluid in a brake actuator in accordance with an output time of a valve...
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6733090 |
Hydraulic vehicle braking system
In a hydraulic vehicle braking systems operable via hydraulic external energy from a pump or, in the event the pump malfunctions, via hydraulic energy made available using a master brake cylinder...
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6702401 |
Electro-hydraulic braking systems
A vehicle electro-hydraulic braking system having a fluid pressure accumulator of the pre-charged diaphragm type which is used to store fluid under pressure, charged by means of a fluid pump or...
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6685279 |
Brake control system
A brake control system includes an ECU constructed to carry out pressure-increase assist control for restraining the opening of an OUT-side gate valve and opening inlet valves during a...
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6679564 |
Auxiliary hydraulic pressure source device for a vehicle
An auxiliary vehicle hydraulic pressure source device includes a hydraulic pressure pump pressurizing and discharging fluid, an accumulator accumulating fluid pressurized and discharged by the...
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6655751 |
Method of controlling vehicle hydraulic brake system
A control method of a hydraulic pressure source-driven type vehicle hydraulic pressure brake system in which no irritating noises or vibrations are produced during stoppage of the vehicle and which...
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6648423 |
Hydraulic brake system for regulated and comfortable braking
The present invention relates to an improved hydraulic brake system for controlled and comfortable braking operations which includes a hydraulic pump for build-up of a hydraulic pressure that...
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6604795 |
Braking system including high-pressure source between master cylinder and brake cylinder
A braking system including (a) a hydraulically operated brake cylinder for operating a brake, (b) a master cylinder operable according to an operation of a manually operable brake operating member,...
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6595598 |
Pump motor control in electro-hydraulic braking systems
A vehicle braking system of the type in which a stored volume of fluid is used to apply the wheel brakes of the vehicle under the control of an electronic unit, the stored volume being held in an...
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6592191 |
Pump equipment and method for assembling same
In a pump equipment having one or more rotary pumps for hydraulic circuit, the intake port is communicated with the shaft hole for inserting the drive shaft and fluid flows through the shaft hole...
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6542793 |
Pedal apparatus for vehicles and a vehicle equipped with the same
There is provided a pedal apparatus for vehicles, which comprises a pedal reaction-force addition means 4 for adding a reaction force to a pedal 1 of a vehicle, a pedal force detection means 2...
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6533365 |
Method and device for driving a means for delivering a pressurized medium in a vehicle braking system as a function of the vehicle speed
A method and device for driving an arrangement, in a vehicle, that delivers a pressurized medium in a brake system, the pressurized medium being delivered in at least one brake circuit of the brake...
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6523560 |
Microvalve with pressure equalization
Disclosed is a microvalve suitable for use in high pressure applications such as refriigeration. The microvalve has a displaceable member that slides across an inlet port, thereby creating an...
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6499812 |
Method and device for adjusting brake pressure and for opening an inlet valve
A method of brake pressure adjustment in a vehicle brake system equipped with an electric hydraulic pump comprises the following steps: detecting a prevailing brake pressure or determining a...
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6494547 |
Brake system for electric motor-powered vehicle
Improving operating feelings and energy saving are aimed for a brake system of the type in which a predetermined differential pressure is produced between a master cylinder and wheel cylinders by a...
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6491354 |
Bleed valve with pump bypass feature
A brake system includes a brake adapted to receive a brake fluid. The brake is in fluid communication with a brake fluid conduit. The brake system includes a pressure accumulator adapted to store...
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6474749 |
Hydraulic system for actuating at least two operating systems of a motor vehicle
A hydraulic system for actuating at least two operating systems of a motor vehicle has a first hydraulic medium reservoir for storing a hydraulic medium. A distribution valve is connected to the...
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6464307 |
Automotive hydraulic pressure brake system
Automotive hydraulic pressure brake system with a stroke simulator is proposed which while the electric control system is functioning properly, the supply of hydraulic pressure from a master...
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6443534 |
Brake system having brake assist feature
A brake system includes first brake assist means arranged in a first brake circuit to increase a first wheel cylinder pressure to a level higher than a master cylinder pressure. The brake system...
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6402265 |
Method and device for compensating for the accumulator pressure in an electrohydraulic braking system
A method and a device for compensating for an accumulator pressure in an electrohydraulic braking system of a motor vehicle, in which a valve arrangement controls an input of a hydraulic fluid from...
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6402264 |
Hydraulic wheel brake system
A hydraulic wheel brake system including a plurality of brakes and a hydraulic brake controller. The brakes includes wheel cylinders corresponding respectively to each wheel. The hydraulic brake...
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6394561 |
Brake system for vehicles with routine judgment of normal operation of pressure sensors
In a brake system of a vehicle in which a pair of wheel cylinders are supplied with a fluid pressure by a fluid circuit having a pair of inlet control valves for selectively connecting the pair of...
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6389349 |
Method and apparatus for activating a pump of a braking system as a function of the pressure gradient
An activation signal of a pump of a braking system is created as a function of a pressure gradient, preferably from a pressure accumulator. In this context, the switched-on time of a pulse-width...
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6386646 |
Hydraulic brake system with a recirculating pump
A hydraulic brake system with anti-lock control comprises a main cylinder connected to a reservoir, wheel brakes connected to the main cylinder by way of brake lines, and a recirculating pump, a...
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6375279 |
Hydraulic control unit with fluid compensator to accommodate travel of master cylinder piston
A fluid compensator is provided in a hydraulic control unit of vehicular brake system. The fluid compensator permits additional displacement of a master cylinder piston during anti-lock braking...
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6364436 |
Brake control device
A brake control device has a master cylinder, wheel cylinder, and a solenoid valve disposed in a conduit between the master cylinder and the wheel cylinder. When a brake pedal happens to be...
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6364431 |
Electromagnetic valve and hydraulic circuit
An electromagnetic valve has a plunger as an armature of an electromagnetic actuator and a ball as a movable valve member. The plunger and the ball are separated to permit the ball to move freely...
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6354673 |
Arrangement for actuating a motor vehicle braking system
The present invention relates to an arrangement for actuating an automotive vehicle brake system of the type ‘brake-by-wire’, which comprises an actuating pedal and a travel simulator which...
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6354672 |
Braking system wherein brake cylinder is communicated with pedal-operated pressure source upon failure of pump-operated pressure source
A braking system including a brake cylinder, a first hydraulic pressure source having a first pump device for pressurizing a working fluid, a second hydraulic pressure source operable in response...
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6349995 |
Brake control system for a vehicle
The present invention is directed to a brake control system for a vehicle, which includes a cut-off valve for opening or closing a main passage, which communicates a master cylinder with a wheel...
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6345869 |
Brake cylinder pressure control apparatus with controller for controlling pressurizing device based on operating state of pressure control valve device
A braking pressure control apparatus for a braking system having brake cylinders including a pressurizing device capable of pressurizing a working fluid and controlling a pressure of the...
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6328391 |
Drum brake device
A drum brake device produces a stable braking force at a predetermined boosting ratio in response to a brake operation force input thereto, even if the friction characteristics of the interface of...
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6322164 |
Braking device
The pump is connected on its delivery side through an auxiliary passage to a primary passage connecting the master cylinder and brake cylinder to each other, and a pressure control valve is...
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6322163 |
Hydraulic vehicle brake system with antilock device
An inexpensive hydraulic brake system for a vehicle including an antilock device, by means of which brake pressures in front wheel brakes and rear wheel brakes of a four-wheeled vehicle that are...
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6318817 |
Electro-hydraulic braking systems
An electro-hydraulic braking system for motor vehicles. The system includes a brake pedal and a braking device associated with at least one vehicle wheel which is brought into communication with an...
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6318816 |
Vehicle brake apparatus
A vehicle brake apparatus includes a brake pedal, a wheel brake cylinder operatively mounted on a wheel for applying a braking force to the wheel in proportion to a hydraulic braking pressure, a...
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6315369 |
Hydraulic braking system wherein pump motor control PWM frequency is lowered below upper audibility limit under predetermined braking conditions
A hydraulically operated braking system including a hydraulic pump operated by an electric motor, and a motor control device connected to the electric motor and controlling an electric current to...
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