摘要:
In a method for operating a hydraulic vehicle brake system, it is arranged for that hydraulic pressure is metered directly into a master brake cylinder by way of a preceding hydraulic booster, and in which the hydraulic pressure is controlled in accordance with a quantity representative of the driver's braking request because the pressure in the preceding hydraulic booster is controlled by actuation of at least two analog or analogized valves. The invention relates
摘要:
The present invention relates to a pressure control device, in particular for motor vehicle braking systems, with at least one valve carrier accommodating a pressure control valve, a pressure sensor for detecting the hydraulic pressure in a pressure fluid channel of the valve carrier as well as with an electric module including electric and/or electronic structural members and being connected to the pressure control valve and the pressure sensor by way of electric contacts. The pressure sensor is positioned in a space interposed between the pressure control valve and the electric module, with at least one of the contacts that is connected to the pressure sensor leading through a sensor carrier to the electric module. The sensor carrier is located at least in sections within the space.
摘要:
A pressure valve, particularly for a reciprocating piston pump for conveying pressure fluid in slip-controlled hydraulic brake systems, wherein the pressure valve has a valve seat body and a valve cover body with a pre-tensioning element and a valve element installed in the space formed between the valve seat body and the cover body, which is particularly economical to manufacture, easy to install and particularly safe because of the valve seat body and the valve cover body being manufactured by non-cutting process.
摘要:
The present invention relates to a hydraulic brake system with slip control, including a braking pressure generator which is connected hydraulically to at least one wheel brake by way of a main pressure line, a return line connected to the wheel brake and in communication with a pressure fluid collecting device, an auxiliary-pressure pump having an auxiliary-pressure line which is connected to the braking pressure generator, and at least one pressure modulation valve acting in the main pressure line and in the return line to close or keep open the pressure fluid passage in the main pressure line and the return line. An orifice is arranged in the main pressure line between the pressure modulation valve and the wheel brake, and an unimpeded hydraulic passage between the main pressure line and the wheel brake is provided in a first switch position, and the orifice limits the pressure fluid passage in the main pressure line leading to the wheel brake in another switch position.
摘要:
A method of assembling elements into a valve block is described, especially for use with slip-controlled brake systems, a sealing ball, valve covers or valve seats are inserted into the valve block to be sealed without using force fitting swaging or other mechanical working of the parts, to avoid contaminating abrasive particles generated by those processors. The elements are inserted into openings in the valve block housing with a clearance fit, and heated to a temperature higher than the austenite starting temperature causing a memory shape to be restored, which provides a sealing fixation of the elements in respective openings in the valve block.
摘要:
A brake system based on the recirculation principle and having a self-priming pump which operates for both anti-lock control and traction slip control. The pump self-primes from the pressure medium storage reservoir via the master cylinder for traction slip control. In a diagonal brake circuit arrangement, a vacuum is prevented from forming in the wheel brake of the non driven wheel because two non-return valves and an auxiliary line are provided which, with the traction-slip-control shut-off valve closed, only permit pressure medium to be supplied to the wheel brake of the non-driven wheel from the suction side of the pump, whereas pressure medium removal only can take place towards the delivery side of the pump.
摘要:
In an anti-lock brake system, a differential pressure limiter (8) is connected in front of the inlet valve (6). This causes a defined pressure gradient to always prevail at the inlet valve (6), what appreciably reduces the noise emission of the valve during an anti-lock braking operation. Since the inlet valve (6) has a slight throttling effect in its opened position, it may occur that on brake operation with cold brake fluid a pressure gradient is generated at the inlet valve (6) which results in the differential pressure limiter closing. It is therefore suggested to arrange a bimetal spring (20) in parallel to the control spring (15) of the differential pressure limiter (8), which bimetal spring expands at low temperatures and cases a force in addition to the spring force of the control spring (15) to act on the control piston.
摘要:
The present invention relates to a hydraulic unit, in particular for slip-controlled automotive vehicle brake systems, including a pump and an electric motor for driving the pump, wherein the drive of the electric motor extends into a crank chamber of the pump, and including ventilation and venting of the crank chamber for the purpose of pressure compensation in relation to the atmosphere using a pressure compensation channel. The pressure compensation channel is connectable to the atmosphere by way of inlet and outlet valves which are closed in their basic position and responsive to the pressure differential.
摘要:
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 suction side of which is connected to the wheel brakes by way of a first suction line. By way of a second suction line, the pump is connected to a pressure source. To control the pressure medium supply from a precharging device or other pressure source to the suction side of the recirculating pump as a function of the pressure in the second suction line, a hydraulically actuated valve is used. The inlet of the valve is connected to the precharging device via the pressure source, the outlet of the valve is connected to the suction side of the recirculating pump. The output pressure of the valve acts in a valve closing direction such that the valve closes once a pressure on the suction side of the recirculating pump exceeds a certain value. Thus, pressure medium supply is controlled as a function of the pressure on the suction side of the recirculating pump rather than the pressure at the valve inlet, to thereby limit the pressure on the suction side and to consequently subject the pump to less wear.
摘要:
An electromagnetic valve that is easily manufactured and has a coaxially adjustable valve seat thereby allowing customized selection of valve components. A precise adjustment of the aial air gap is permitted on the hold-on magnet. An individual selection of a diaphragm member situated within a valve seat member is provided for with the diaphragm member being detachably connected to the valve seat member and with the diaphragm member having an outwardly flared open end.