Wabco Gmbh & Co Ohg

Wabco Gmbh

Peter Homann

Dieter Frank

Andreas Kranz

Armin Sieker

Hans-Klaus Wolff

Dirk Meier

Hartmut Schappler

Oliver Gr&uuml;ndker

Gerdt Schreibert

Gerdt Schreiber

Rainer Risse

Bernd-Joachim Kiel

Andreas Teichmann

Bernd Kiel

Herbert Unger

Stefan Klik

Ingo Torhoff

Stefan Knoke

Werner Dreyer

Jens Gr&ouml;ger

Juan Rovira-Rifaterra

Friedrich Gross

Wilfried Matthias

Dieter Brehmer

Christian Brammer

Horst Breidel

A solenoid-valve unit for an electropneumatic controller, especially a pilot-control unit of an electropneumatic pressure modulator of a vehicle, includes a solenoid-valve unit having a valve-housing bottom with compressed-air bores, and solenoid valves having solenoids and displaceable magnet armatures. The solenoids are disposed outside of the valve-housing bottom. At least one pressure sensor for measuring pneumatic pressure in a compressed-air bore of the valve-housing bottom is placed in or on the valve-housing bottom. Electric leads to the solenoids and to the pressure sensor are routed to a common electrical interface.

Solenoid-valve unit for an electropneumatic controller

A control device for pressurized fluids includes a valve mechanism actuated by a first device incorporating electromagnets in a first housing, and a second device incorporating a circuit board for controlling the valve mechanism in a second housing. Pins on the first device and sockets on the second device automatically form an electrical plug-type connection when the housings are joined. Each socket is received in a first portion of a through-hole provided in a mount supported on the circuit board such that it extends into a corresponding through-hole in the circuit board. A second portion of each through-hole in each mount has a funnel-shaped guide opening toward the pins. A pressure sensor supported by the circuit board forms a plug-type engagement with a port extending from the valve mechanism when the housings are joined. Contacts extend from the sensor into holes in the circuit board.

Control device for pressurized fluids

A pre-engagement unit for a braking pressure modulator for a pressure regulating circuit includes a first pneumatic inlet, a second pneumatic inlet, a first pneumatic output terminal, and a second pneumatic output terminal. The unit includes an electrically actuated valve system having a plurality of solenoid valves and a plurality of electrical terminals connected to output terminals of an electronic control unit. An electric braking command signal transmitter delivers a driver initiated electric brake value setting to an input of the electronic control unit. Under normal conditions, a supply pressure and a redundancy pressure are delivered at the first pneumatic output terminal to be converted by an air quantity augmenting relay valve to a braking pressure. In case of failure of the electronic braking system, the redundancy pressure is delivered at the first pneumatic output terminal to be converted by the air quantity augmenting relay valve to the braking pressure.

Braking pressure modulator for an electronic braking system

An electric contact plug receives a tip jack input at a plug-in zone, and completes the electrical connection via a connection zone to an electronic component, such as a printed circuit board. The electric contact plug also includes an intermediate zone, connected between the plug-in zone and the connection zone. The intermediate zone is designed to deform mechanically when the plug-in zone is subjected to vibrational stresses, as typically occur in a motor vehicle. As a result, the tip jack is held securely within the plug-in zone, while the intermediate zone absorbs the effects of the vibrational stresses. Thus, the inventive electric contact plug avoids the problems of friction and corrosion within the plug-in zone. Moreover, this electric contact plug is compatible with thick-wire bonding, and can be manufactured economically.

Electric contact plug with deformable attributes

A pre-engagement unit for a braking pressure modulator for a pressure regulating circuit of an electronic braking system includes an electrically actuated valve system with three substantially identical 2/2-way solenoid valves. First and second terminals of the 2/2-way solenoid valves are selectively connected to the pneumatic inlets and output terminals of the pre-engagement unit, and to each other so that the first 2/2-way valve serves as an air admission valve for supply pressure, the second 2/2-way solenoid valve serves as an air admission/exhaust valve for redundancy pressure, and the third 2/2-way solenoid valve serves as an exhaust valve. Thereby, the pressure in the pressure regulating circuit can be increased, decreased, or maintained. Desirably, the first, second, and third 2/2-way solenoid valves are connected in parallel to each other.

Braking pressure modulator for a trailer with electronic braking system

A valve system for the pre-engagement unit of a vehicle braking pressure modulator contains solenoid valves, which are controlled by an electronic braking system. Pneumatic pressure is fed into a brake cylinder on the vehicle wheels via a pressure regulating channel of the pre-engagement unit. The solenoid valves are configured as cartridge solenoid valves, so that assembly is simplified, and utilization of elastic tolerance compensating elements is unnecessary. A preferred embodiment includes three cylinder bodies connected end-to-end with no increase in cylinder diameter. This embodiment enables the use of identical armatures and identical magnet coils for different valve types, such as 3/2-way solenoid valves or 2/2-way solenoid valves. Also, these valves may be configured as normally open or normally closed, with identical outside dimensions. As such, three cartridge solenoid valves can be combined into a compact triple valve cartridge unit that further simplifies the assembly process.

Valve system for the pre-engagement unit of a braking pressure modulator

A screw and nut assembly comprises a screw having a hollow cavity extending longitudinally throughout, a nut configured to screw onto the screw, and an extension attached to the nut. The extension traverses the hollow cavity of the screw when the nut is placed on an end of the screw without being screwed on. The extension is displaced from the hollow cavity of the screw as the nut is screwed onto the screw. The status of the screw and nut connection may thus be determined from the screw side of the assembly, without observing the nut, by observing the extent to which the extension has emerged from the hollow cavity in the screw.

Screw and nut assembly

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Neustadt, Germany

Peter Homann