Abstract: A hydraulic unit of an electronic control brake system is disclosed. The hydraulic unit of the electronic control brake system includes a modulator block having a plurality of accommodating bores in which a plurality of valves and pressure sensors coupled to a master cylinder to control braking hydraulic pressure supplied towards vehicle wheels are installed. Passages connecting between the accommodating bores are formed in the modulator block, and the passages are formed to be divided into two layers.

Abstract: A production method for a cylinder device includes a first liquid injection step of injecting a first predetermined amount of working fluid into the inner cylinder, a first piston rod insertion step of inserting an assembly of the piston rod and the piston into the inner cylinder to dispose the piston at a predetermined position inside the inner cylinder, a second liquid injection step of injecting a second predetermined amount of the working fluid into an upper side of the piston inside the inner cylinder, and a closing step of closing the opening of the outer cylinder with the closing member.

Abstract: A gas-charging and flanging machine (10) includes a sealed chamber (13a). The gas-charging and flanging machine is used for carrying out, inside the sealed chamber, charging of a gas into a workpiece (20) and flanging of the workpiece (20) by spinning and pressing. The gas-charging and flanging machine charges a gas into a workpiece and flanges the workpiece on the same machine such that production efficiency can be improved.

Abstract: An air bleeding apparatus and method for electric brake systems. The air bleeding apparatus includes a piston position sensor configured to detect a position of a piston installed in a main master cylinder, a motor drive unit configured to drive a motor to move the piston, a motor speed detection unit configured to detect a speed of rotation of the motor, a brake pedal position sensor configured to detect a position of a brake pedal, and a control unit configured to, when entering an air bleeding mode, release a normally actuated valve and control the position of the piston by controlling the motor drive unit according to the position of the piston detected by the piston position sensor or the speed of rotation of the motor detected by the motor speed detection unit when it is determined that the brake pedal is pressed.

Abstract: This device for collecting and supplying brake fluid has a gas-liquid separation tank divided into a lower chamber and an upper chamber with a partition wall interposed therebetween. Connected to the gas-liquid separation tank are: a collection line for collecting brake fluid from the brake system of a vehicle in the gas-liquid separation tank; a circulation line for extraction of brake fluid from the lower chamber and the return thereof to the lower chamber; and a replenishment line for replenishing the gas-liquid separation tank with fresh brake fluid. Air intake for the brake system is performed via a main intake line, and air intake for the gas-liquid separation tank is performed via an auxiliary intake line. Both the main intake line and auxiliary intake line are connected to an auxiliary tank.

Abstract: A flushing module for hydraulic drives, in particular for self-contained drives, for cleaning and/or replacing hydraulic medium. The flushing module has a pump and at least one shutoff valve and a housing. The flushing module is portable.

Abstract: Disclosed is reservoir assembly for a brake system. The reservoir assembly for a brake system storing brake oil to supply the brake oil to a master cylinder, the reservoir assembly comprising: a first reservoir tank coupled to the master cylinder and having a first connection port at an upper portion; a second reservoir tank provided to be spaced apart from the top portion of the first reservoir tank at a predetermined interval and having an oil inlet at one side and a second connection port at the other side; and a connection member connecting the first connection port with the second connection port to transfer the brake oil from the second reservoir tank to the first reservoir tank.

Abstract: A method for bleeding at least one part of a hydraulic brake system of a vehicle, wherein the brake system includes a brake circuit whose pressure can be selectively increased by a pump. The increased pressure is applied by the pump to the part of the brake system to be bled for a specified period of time without opening bleed valves.

Abstract: A brake fill test apparatus that includes a vessel including an interior having a fill chamber, a first sensor chamber, and a second sensor chamber. The vessel also includes at least one port that provides access to the fill chamber. A first valve is configured to provide selective flow communication between the fill chamber and the first sensor chamber, and a second valve is configured to provide selective flow communication between the fill chamber and the second sensor chamber. A first sensor is coupled within the first sensor chamber and a second sensor is coupled within the second sensor chamber. The first sensor is configured to monitor a positive gauge pressure within the interior and the second sensor is configured to monitor a negative gauge pressure within the interior.

Abstract: A brake-bleeder system for bleeding two brake calipers using hydraulic brakes simultaneously is disclosed herein. The brake-bleeder system includes a fluid-reservoir with a first-tube detachably coupled to an opening of the fluid-reservoir. A three-way splitter couples the first-tube to a second-tube and a third-tube. The second-tube and the third-tube may connect to brake calipers on a vehicle.

Abstract: When a permission condition which is set in advance is satisfied in a state in which a vehicle is stopped by an operation of a brake pedal by the driver, an engine mounted on the vehicle is automatically stopped; and when the engine is automatically stopped, while a vehicle stop maintaining control to generate a braking force capable of maintaining a stop state of the vehicle is operated even when a brake operation is reduced, there is started notification to the occupant of the vehicle about ignition information which indicates that a state of an ignition switch of the vehicle is on when a parking brake is operated.

Abstract: Example methods, apparatus, systems and articles of manufacture are disclosed to facilitate brake bleeding. Example apparatus disclosed herein include a bleed controller to actuate a first valve connected to a pump and an end of a brake line, the pump connected to a reservoir; to actuate a second valve connected to the pump and a master cylinder, the master cylinder connected to the reservoir; and to operate the pump to bleed the brake line when the first valve is actuated and to bleed the master cylinder when the second valve is actuated.

Abstract: A system for testing brake systems of motor vehicles at assembly lines of automobile manufacturers, wherein the brake pedal is operated using an automatically controlled device and wherein the pedal travel and pedal force are measured using associated instruments is disclosed. A travel-force curve is determined based on pedal travel and pedal force during pedal movement, which is analyzed using a physical brake system model. The brake system model isolates design influences of the individual components. Furthermore, the travel difference between different benchmarks of various vehicles is taken into consideration when calculating the pedal travel to compensate the variable influence of the running clearance on pedal travel.

Abstract: A braking system for an autonomous vehicle includes a brake device that is configured to brake a vehicle wheel. A first control system includes a first pump fluidly connected to the brake device via a hydraulic circuit. A second control system includes a second pump fluidly connected to the brake device via the hydraulic circuit. The second pump is fluidly connected in parallel with the first pump. A controller is in communication with the first and second control systems. The controller is configured to detect a fault in the first control system. The controller is configured to command the second pump to pressurize the hydraulic circuit in response to the failure.

Abstract: A hydraulic braking system includes: a master cylinder including: a pressurizing piston fluid-tightly and slidably fitted in a housing; a front pressure chamber located in front of the pressurizing piston and connected to a brake cylinder; and a rear chamber located behind the pressurizing piston; a rear-hydraulic-pressure control device connected to the rear chamber of the master cylinder and configured to supply control hydraulic pressure to the rear chamber; and an air bleeding device configured to perform air bleeding for an air bleeding target portion as at least a portion of the rear-hydraulic-pressure control device, in a state in which working fluid is prevented from being supplied to the rear chamber.

Abstract: A method for bleeding at least one part of a hydraulic brake system of a vehicle, wherein the brake system includes a brake circuit whose pressure can be selectively increased by a pump. The increased pressure is applied by the pump to the part of the brake system to be bled for a specified period of time without opening bleed valves.

Abstract: A maintenance auxiliary tool of brake system includes a main body, a locking module, a pneumatic module and a controller. The main body includes an outer rod, a support rod and an adjusting rod. The pneumatic module includes a pneumatic cylinder, a first airflow device, a second airflow device and an action rod. When the switch is operated to push a high pressure air into the pneumatic cylinder through the second airflow device, the action rod is pushed to drive the brake pedal toward. When the switch is operated to push a high pressure air into the pneumatic cylinder through the first airflow device, the action rod is pushed to drive the brake pedal backward. The replacement of the brake oil will be completed by repeating the above operation which drives the brake pedal to go backward and toward in a manner to expel air within an oil pipe.

Abstract: A brake fill tool for filling a brake housing in a braking system on a vehicle includes a nozzle housing having a nozzle for filling a reservoir chamber of the brake housing, a manual clamping mechanism connected to the nozzle housing that selectively clamps the nozzle to the brake housing, and a pressurized sealing mechanism that is connected to the nozzle housing. The pressurized sealing mechanism selectively seals the nozzle to the brake reservoir after the manual clamping mechanism clamps the nozzle to the brake housing.

Abstract: The present invention provides an input device of a vehicle brake system, the input device being a separate unit from an electric brake actuator, the electric brake actuator for generating a first fluid pressure, the input device of the vehicle brake system comprising: a master cylinder for generating a second fluid pressure; a stroke simulator for applying a simulated reaction force, the stroke simulator and the master cylinder forming an attachment body, with the stroke simulator disposed in communication with the master cylinder; and a component storage box provided on the attachment body for a component of either one of the master cylinder and the stroke simulator, wherein the attachment body has a vent hole with a first end in communication with the component storage box and a second end in communication with a space formed before a surface of a dashboard having the input device mounted thereon.

Abstract: A hydraulic brake controller does not only dispose a first oil-return hole, which is connected to an oil storing space, at a stroke place of allowing a piston to reciprocate in a main oil cylinder, but also disposes a regulating screw, which stretches the first oil-return hole, on a controller main body. The speed of returning hydraulic oil to the oil storing space can be controlled by simply changing the degree of the regulating screw stretching the oil-return hole so that time of allowing the piston passing through the oil-return hole to completely impose the braking force on the brake pad can be extended or reduced, thereby achieving a goal of conveniently regulating the braking sensitivity.

Abstract: The brake fluid cooling systems may be used for cooling the brake fluid in a hydraulic brake system. A pump may have an outlet port in fluid communication by a first conduit with a pressure port of a brake wherein there may be a check valve in the first conduit oriented to allow flow from the pump and not to the pump. A bleed port of the brake in fluid communication with a master brake cylinder. The master brake cylinder in fluid communication with an inlet port of the pump.

Abstract: A bleeder plug is provided with a bleeder body having a nipple portion and a threaded portion and being provided with a through hole extending from the nipple portion-side end to the threaded portion-side end; a seat pin having a press fitting portion to be press-fitted in an opening of the through hole at the threaded portion-side in the bleeder body and a seat portion blocking a bleeder hole, and a groove formed in a contact surface between the bleeder body and the seat pin and communicating the opening of the through hole at the nipple portion-side with an outside space via the contact surface.

Abstract: The invention relates to a device for bleeding a hydraulic system. The bleeding device comprises a venting passage which can be closed by means of a valve arrangement. In order to simplify such a bleeding device regarding the operation thereof while preventing air from being delivered in an uncontrolled manner during the bleeding process, the valve arrangement is provided with a valve member (S) which can be lifted from a valve seat (8) of the valve arrangement counter to the force of a spring element (7) in an open position of the bleeding device while being fixed to the valve seat (8) in a closed position of the bleeding device. The invention further relates to a venting screw which encompasses such a valve arrangement according to the principle of a check valve and is to be mounted in a caliper (18).

Abstract: An electronically controllable brake system includes an electronic controller installed within the motor vehicle for actuating electrohydraulic components of the brake system and for operating the electrohydraulic components during the process of filled with hydraulic fluid and for removing air from hydraulic components of the brake system. A filling sequence is performed according to a predetermined filling profile that utilizes on-board sensors that detect brake system pressure and identify a defined pressure in conformity with a desired filling profile.

Abstract: A computer-implemented method of bleeding a hydraulic braking system during vehicle repair includes: receiving a designation of an affected brake component in the hydraulic braking system based on a vehicle diagnostic; and bleeding the affected brake component by actuating a hydraulic pump in the brake system via an in-vehicle control module.

Abstract: A fluid-distribution system includes a plurality of fluid-distribution nodes with three-way ports attached to bleed/flush lines and alternate ports attached to vacuum lines. A first pump is used to draw new brake fluid from a new fluid container, push it through the manifold and ports, and through the bleed/flush lines. Fluid flow through the ports is selectively controlled by a computing device. In this manner, a vehicle's brake system including individual brake lines and ABS systems, may be flushed in a prescribed sequence. The vacuum lines are connected to a second pump via alternate ports of the sequential control valve manifold and may be used evacuated air and contaminated brake fluid from the vehicle's bleeder valves or master cylinder. Additionally, the bleed/flush lines may be connected to the alternate ports during priming or purging of the system. This also facilitates storage of the bleed lines as it prevents brake fluid from spilling and prevents air from entering the system.

Abstract: Automotive service equipment for brake fluid exchange includes a central unit having a controller for operating the equipment and a communication module for wirelessly communicating with each of a plurality of remote bleed modules to control bleeding brake fluid from respective brake bleeders of a vehicle connected to the modules. The brake fluid from the brake bleeders is stored in containers in the modules for later removal. When disconnected from the brake bleeders, the modules are moved to docking stations on the central unit for emptying brake fluid from the module containers and vacuum charging the containers for brake bleeding. The automotive service equipment and related method of performing brake fluid exchange in an automotive vehicle avoid the use of hoses for returning the waste fluid to the central unit thus reducing the problem of storage and handling of such hoses and spillage of residual fluid left in the hoses.

Abstract: A hydraulic caliper brake including a housing having a first half and a second half and a bridge connecting the housing halves. Each half of the housing includes a bore having a fluid chamber and a piston therein. The caliper brake also includes a fluid network having an inlet port and a bleed port in the first half of the housing, a first channel extending through the bridge and in fluid communication with the inlet port and the fluid chamber in the second half of the housing, and a second channel extending through the bridge and in fluid communication with the fluid chamber in the second half of the housing and the bleed port. A dual-flow passage is provided and is in fluid communication with the fluid chamber in the first half of the housing and the second channel. The fluid chamber in the first half is not in fluid communication with the first channel.

Abstract: An opposed-piston disc brake includes cylinder connection oil passages respectively connected to a cylinder of an inner caliper portion and a cylinder of an outer caliper portion, passage communication bores respectively formed at bridge portions to extend in an axial direction of a disc in a substantially straight manner. The cylinder connection oil passages are formed using a core at the time when a caliper body is cast. The cylinder connection oil passages extend in a radially outer direction of the disc. Ends of the cylinder connection oil passages in a longitudinal direction thereof are directly connected to the passage communication bores. In a state where the caliper body is mounted on a vehicle, a top portion of an inner wall surface of one of the passage communication bores is positioned higher than the ends of the cylinder connection oil passages.

Abstract: A brake system is provided, the brake system having a brake valve having a first mode and a second mode. A retractor is in fluid communication with the brake valve, and a brake assembly is in fluid communication with the retractor. When the brake valve is in a first mode, the brake assembly engages, and when the brake valve is in a second mode, the brake retractor disengages the brake assembly via a fluid vacuum.

Abstract: A hydraulic unit for a motor vehicle brake system operating on the recirculation principle, in which each brake circuit has in the region of the hydraulic unit a prefilling location which opens into the pump suction conduit between the pressure-retaining valve and the change-over valve for the purpose of receiving brake fluid. The hydraulic unit can thereby be prefilled with lower complexity and cost in terms of time and processes prior to installation in the vehicle.

Abstract: Automotive service equipment for brake fluid exchange includes a central unit having a controller for operating the equipment and a communication module for wirelessly communicating with each of a plurality of remote bleed modules to control bleeding brake fluid from respective brake bleeders of a vehicle connected to the modules. The brake fluid from the brake bleeders is stored in containers in the modules for later removal. When disconnected from the brake bleeders, the modules are moved to docking stations on the central unit for emptying brake fluid from the module containers and vacuum charging the containers for brake bleeding. The automotive service equipment and related method of performing brake fluid exchange in an automotive vehicle avoid the use of hoses for returning the waste fluid to the central unit thus reducing the problem of storage and handling of such hoses and spillage of residual fluid left in the hoses.

Abstract: A method and a plant for filling a hydraulic circuit with a control fluid, in which a vacuum is generated within the hydraulic circuit, the control fluid is supplied to a degasification chamber, a vacuum is generated in the degasification chamber containing the control fluid and the control fluid is supplied under pressure from the degasification chamber to the hydraulic circuit while continuing to maintain the vacuum in the hydraulic circuit.

Abstract: A motorcycle with a disk brake device and an anti-dip device for improving the external appearance of the front forks and for simplifying the fixing of the hoses. A single hose includes a hydraulic passage k extending from a secondary master cylinder and one end of the hose is connected to one opening of a three-way opening coupling fixed to the front forks. One end of a single hose is supported by the secondary master cylinder and the other end is supported by the three-way opening coupling. Thus the hose clamps may be omitted, the number of components is conspicuously reduced and the arrangement is simplified. In comparison to extending two hoses from the secondary master cylinder, only a single hose is extended according to the present invention. Thus, the handling of the hoses is simplified and the outer appearance near the front forks is improved.

Abstract: A vehicular disk brake device having a first air discharge mouth and a first hose connection mouth connected to a center cylinder project from an outer face of the caliper case in close proximity and so that the axes of the first hose connection mouth and the first air discharge mouth are parallel. In addition, a difference of elevation h1 is provided on both tip end faces so that the tip end face of the first air discharge mouth is higher than the tip end face of the first hose connection mouth. Since an elevation difference h1 is provided on both tip end faces so that the tip end face of the first air discharge mouth is higher than the tip end face of the first hose connection mouth, obstructing components about an air valve mounted on the first air discharge mouth are avoided.

Abstract: A braking system includes first and second electromagnetic opening valves and a bleeding mode setting unit. The first electromagnetic opening and closing valve is provided to a first brake fluid channel to communicate or block a first fluid pressure from a master cylinder to a wheel brake. The second electromagnetic opening and closing valve is provided to a second brake fluid channel to communicate or block a second fluid pressure from a power unit to the wheel brake. The bleeding mode setting unit is provided to set a bleeding mode in which each of the first and second electromagnetic opening and closing valves is opened and closed in order to perform an air-bleeding from each of the first and second brake fluid channels. The determining unit is provided to determine whether or not the bleeding mode setting unit is allowed to set the bleeding mode.

Abstract: A master cylinder assembly includes a housing and a cover coupled to the housing, defining a reservoir adapted to contain fluid at a level. The cover includes an aperture. A sight glass is received within the aperture and adapted to indicate the fluid level. The sight glass has a top portion, bottom portion, and middle portion between the top and bottom portions. The top and bottom portions each have a perimeter sized to be received within the aperture and to seal the reservoir. The middle portion has a reduced perimeter. The sight glass is movable between a raised position where the bottom portion is received within the aperture, sealing the reservoir and a lowered position where the top portion is received within the aperture, sealing the reservoir. The middle portion allows fluid flow through the aperture when the sight glass is moved from the raised position to the lowered position.

Abstract: A brake fluid flush machine comprises a used fluid tank, a new fluid tank, a manifold connectable to four secondary brake cylinders, a suction pump connecting the manifold to said used fluid tank for draining used brake fluid from said four secondary brake cylinders, a pressure pump connecting the new fluid tank to the master cylinder, and a processor. The processor is configured to control the fluid exchange by sequentially opening and closing valves that couple the four secondary brake cylinders with the suction pump, where the valves may be opened according to a user specified sequence.

Abstract: A tool assembly includes a body supporting a rotatable nut which receives and mates with a bleeder valve threaded into a hydraulic fluid system such as a caliper wheel brake or a clutch for a motorcycle. The nut is sealed to the system, and the nut is rotated to move the bleeder valve to an open position while maintaining the seal between the nut and the fluid system. A passage within the body and the nut provides for evacuating the system and then charging fluid into the system. The nut is rotated to move the bleeder valve to its closed position, and the nut is then unclamped and unsealed from the fluid system. In one embodiment, the bleeder valve is gripped to clamp and seal the nut to the fluid system, and in another embodiment, the nut is sealed to the system using a clamping member opposing the nut.

Abstract: A hydraulic disc brake caliper housing that includes first and second side portions and first and second end portions that cooperate to define a fluid path defined therein that extends between a fluid inlet and a fluid outlet. The fluid path extends from the fluid inlet, through the second side portion, through the first end portion, through the first side portion and to the fluid outlet.

Abstract: A reservoir tank has an inlet/outlet port communicating with a master cylinder, and a hydraulic fluid supply port provided directly opposite the inlet/outlet port. A tubular portion is provided on the inner surface of the tank. The tubular portion has an internal passage communicating with the inlet/outlet port and having a top opening. A box-shaped member has its bottom plate fitted on the tubular member. The bottom plate is formed of a filter material. A deflector plate is supported on legs extending upwardly form the bottom plate of the box member so as to be disposed right over the top opening of the tubular portion. The deflector plate deflects the flow of hydraulic fluid such that it will not be directed toward the hydraulic fluid supply port, thereby preventing hydraulic fluid from being blown out through the hydraulic fluid supply port even if this port is open.

Abstract: Automotive service equipment for brake fluid exchange includes a central unit having a controller for operating the equipment and a communication module for wirelessly communicating with each of a plurality of remote bleed modules to control bleeding brake fluid from respective brake bleeders of a vehicle connected to the modules. The brake fluid from the brake bleeders is stored in containers in the modules for later removal. When disconnected from the brake bleeders, the modules are moved to docking stations on the central unit for emptying brake fluid from the module containers and vacuum charging the containers for brake bleeding. The automotive service equipment and related method of performing brake fluid exchange in an automotive vehicle avoid the use of hoses for returning the waste fluid to the central unit thus reducing the problem of storage and handling of such hoses and spillage of residual fluid left in the hoses.

Abstract: A spring-actuated parking brake includes a spring brake actuator communicating with a fluid source via a supply line. In brake released condition, the actuator is pressurized via a supply valve; in engaged condition, the actuator communicates with a pressure sink via the supply valve and a pressure-relief line. During brake engagement, the supply valve and a shutoff valve between the supply valve and actuator are switched to flow-enabled position for pressure relief of the actuator placing it in communication with the pressure sink. For brake release, the supply valve is switched to the fluid source and the shutoff valve is switched to fluid-passing position communicating with the fluid source to pressurize the brake cylinder. After brake engagement, the shutoff valve is switched to shut-off position decoupling the actuator from the supply line; the supply valve is switched to flow-enabled position placing the supply line in communication with the pressure sink.

Abstract: The present invention discloses a braking apparatus for a vehicle having a brake pedal. The braking apparatus includes a master cylinder having a reservoir for retaining a brake fluid. At least one hydraulically actuated brake is in fluid communication with the master cylinder and a control unit is in electrical communication with the hydraulically actuated brake. A replenishment system is in fluid communication with the master cylinder and in electrical communication with the control unit for feeding the brake fluid into the replenishment system during a first condition and feeding the brake fluid from the replenishment system into the hydraulically actuated brake during a second condition after initial depression of the brake pedal to provide consistent pedal feel and braking pressure.

Abstract: A brake control apparatus including a reservoir tank, a housing, a pump within the housing, a suction port formed in the housing and communicated with a suction portion of the pump, a discharge port formed in the housing and communicating a discharge portion of the pump with wheel cylinders, a suction pipe connecting the suction port and the reservoir tank, and a reservoir chamber disposed within the housing between the suction portion of the pump and the suction port. The reservoir chamber has a volume capable of reserving at least a predetermined amount of the brake fluid which is required for one-time braking at a maximum fluid pressure.

Abstract: A damper for an airplane landing gear leg comprises a main strut (11) and a rod piston (13) co-operating with the strut (11) to define a main chamber (15) and annular chamber (16) for hydraulic fluid, and presenting internally two adjacent chambers (19, 20) that are isolated from each other by a separator piston (21). The damper (10) further comprises a first secondary strut (26) telescopically Slidable on the above-mentioned rod piston (13), and a second secondary strut (37) telescopically slidable on the other end of the first secondary strut (26). The two second annular chambers (31, 40) as defined in this way are respectively connected to associated control circuits thus enabling the total length of the damper to be shortened or lengthened respectively for the purpose of causing the landing gear to contract or to be extended.

Abstract: The present invention relates to a method for pre-filling a low-pressure storage device (14) of a motor vehicle braking system (17), having a changeover valve (8), a hydraulic pump (9), an outlet valve (13), and a low-pressure storage device (14) situated in a suction line of the hydraulic pump (9). The low-pressure storage device (14) can be pre-filled in a particularly simple and low-noise manner if the actuation of the foot brake pedal (1) is monitored using a sensor mechanism and, when there is an actuation, the changeover valve (8) is closed in order to lock in the braking pressure acting on the wheel brake (11), and at least one of the outlet valves is opened in order to release the braking pressure into the low-pressure storage device (14).

Abstract: A method of filling a brake system for a motorcycle including a brake system having a master cylinder assembly and a caliper assembly. The master cylinder assembly includes a housing and a cover coupled to the housing to define an enclosed reservoir. The caliper assembly includes a fluid passageway and a fitting adjustable to selectively provide fluid communication with the fluid passageway. The motorcycle also includes a brake line coupled between the master cylinder assembly and the caliper assembly to fluidly connect the reservoir and the fluid passageway. The method also includes substantially evacuating the reservoir, brake line and fluid passageway, coupling a fluid source to the fitting, passing fluid from the fluid source through the fitting, and filling the reservoir, brake line, and fluid passageway with the fluid passed through the fitting from the fluid reservoir.

Abstract: The invention discloses a method for determining the air content of the brake fluid in a hydraulic braking system. This method also permits determining the quality of the bleeding of the braking system. The principle of the method is a comparison of the volume intake with the respectively achieved pressure. The correlation is compared to nominal values. As the volume intake is determined by the clearance, the system is set by means of a pre-actuation to an initial condition before each actual measurement.

Abstract: The invention relates to a method for degassing a hydraulic vehicle brake system that has an external-force service brake system and a muscle-powered auxiliary brake system. For the degassing, brake pressure buildup valves are opened, preferably successively, so that brake fluid flows through the brake pressure buildup valves, disconnection valves and a master cylinder and reaches a brake fluid reservoir. The brake fluid positively displaces any brake fluid containing gas from the vehicle brake system into the brake fluid reservoir, where gas bubbles can escape from the brake fluid. Compressibility of the brake fluid from gas bubbles is avoided.