Abstract:
L'objet de la présente invention est une électrovanne qui comporte premièrement un noyau fixe (1) hébergeant au moins une bobine (2) dans au moins un logement et composant avec celle-ci au moins un électroaimant de l'électrovanne. Elle comporte encore un corps (4) composant avec le noyau fixe (1) la structure étanche et porteuse de l'électrovanne. Troisièmement, elle comporte au moins un noyau mobile (3) placé entre le noyau fixe (1) et le corps (4). L'électrovanne est spécifiquement innovante dans le sens où le noyau fixe (1) est fabriqué d'une pièce unique en un matériau ferromagnétique injecté et cumule plusieurs fonctions dont la connexion pneumatique et/ou la connexion électrique de la (ou des) bobine(s) (2). La diminution du nombre de pièces et la simplification de la conception permettent ainsi une miniaturisation plus élevée.
Abstract:
A fluid flow control valve system has a plurality of pairs of 3 port, 2 position (3/2) control valves (6, 6') each valve being movable between its two positions by a pair of electrically-operable actuators (1, 2). A logic controller selectively generates electrical control signals for independently controlling operation of the pairs of 3/2 control valves, and a circuit means (11) is associated with each 3/2 control valve pair (6, 6') to receive the control signals and provide electrical outputs to either of the actuators (1, 2) of each 3/2 control valve of each pair. Variable switch means (14) forming part of the circuit means (11) pre-select the actuators (1, 2) to which the output is applied. Varying the switch means (14) programmes the fluid output mode of each 3/2 control valve pair to provide any one of a number of different effective valve types.
Abstract:
Thermal microvalves and their method of use include a fusible material (40) positioned in a microchannel (44). A heater (42) melts the material (40) which is then forced by air pressure (46) into a second channel (48) where it cools and solidifies, blocking flow. Alternatively, the melted and solidified material (40) can hold a diaphragm of a diaphragm valve in place, eliminating the need for continued applied force on the diaphragm.
Abstract:
A hydraulic braking pressure control unit including three or more hydraulic pressure control components (62, 64, 80, 82, 84, 86, 120, 122; 362, 364, 378, 380, 386, 388, 406, 410, 412, 414, 416), and a holder structure (150; 420) which holds those hydraulic pressure control components, wherein the three or more hydraulic pressure control components are selected from electromagnetically operated hydraulic pressure control valves (64, 80, 82, 84, 86, 362, 364, 378, 380, 410, 412) capable of controlling a pressure of a working fluid in a brake cylinder (22, 24; 320-323) in a braking system, and pressure detecting devices (62, 120, 122; 386, 388, 406, 414, 416) used to detect respective pressures of the fluid, to control the electromagnetically operated hydraulic pressure control valves. The three or more hydraulic pressure control components (62, 64, 80, 82, 84, 86, 120, 122; 362, 364, 378, 380, 386, 388, 406, 410, 412, 414, 416) include three hydraulic pressure control components (120, 122; 362, 364, 378, 380, 386, 388, 406, 410, 412, 414, 416) which are attached to the holder structure (150; 420) such that one of the three hydraulic pressure control components is spaced from the other two hydraulic pressure control components by substantially the same distance.
Abstract:
The present invention is related to a multiway valve for controlling the fluid flow of a pressure medium comprising a main valve (1) with an inner substantially axial opening which has inner chambers connected with corresponding outer ports (2), wherein at least one valve spool is guided axially movable in said axial opening for switching the fluid flow between said ports (2), wherein the valve spool is driven by at least one pilot valve (3 ,4) mounted on the outer surface of the main valve (1), characterized in that the at least one pilot valve (3, 4) is surrounded by a container arrangement (5, 6) wherein its form is adjusted to the form of the main valve (1) in order to provide a clean surface between the main valve (1) and the at least one pilot valve (3, 4).
Abstract:
Master cylinder pressure of either or both of the primary and secondary braking circuits is sensed by a pressure sensor or sensors (56,58) mounted in a manifold (40) which is installed directly on a brake pressure modulator housing (12) when the modulator (10) is manufactured. The pressure sensors (56,58) receive power and are grounded through the electronic control unit (26) which is an integral component of the modulator (10); accordingly, the sensors (56,58) do not require external electrical connections other than those already provided on the modulator (10). Since the sensing manifold (40) is installed and tested for leaks when the modulator (10) is manufactured and before the modulator (10) is shipped to the vehicle assembly plant, assembly operations in addition to those required in installation of the modulator (10) in the vehicle braking system are not required.
Abstract:
Es wird eine Ventileinheit vorgeschlagen, die mehrere batterieartig zusammengefasste Steuerventile (3)aufweist, die aus einem gemeinsamen, die Ventileinheit (1) durchziehenden Speisekanal (7) mit einem fluidischen Druckmedium gespeist werden. Die Ventileinheit (1) ist mit einem den Mediumdruck in dem gemeinsamen Speisekanal (7) erfassenden Drucksensor (18) ausgestattet.