A communication system includes a plurality of recipient processors (14, 15, 16) located at geographically remote locations with respect to each other and connected for communication with an information provider processor (12), over the communications network. The provider (12) and recipient processors (14, 15, 16) may comprise respective computers coupled for communication on the Internet or WWW. The provider processor is capable of providing information from any suitable source, by communicating such information over a communications network. However, access to the information by the recipient processors is controlled, based on the geographic location or region of the recipient processors. Each recipient processor is operably associated with a positioning system for providing geographic location information corresponding to the location or region in which the positioning system is located, such as a global positioning system GPS (20, 21, 22). The geographic position information is used to determine whether or not the processor requesting the information is within a restricted or non-restricted region.

System and process for limiting distribution of information on a communication network based on geographic location

A fuel injection system for an internal combustion engine including a fuel injector which can be subjected to fuel at high pressure and is actuatable via a metering valve device by which the pressure in a pressure booster control chamber is controllable such that the pressure in a pressure booster pressure chamber, defined by a pressure booster piston, that can be filled with fuel from the high-pressure fuel source via a filling path in which a check valve is disposed and that is in communication with an injection valve member pressure chamber, is increased by the pressure booster piston such that an injection valve member opens for injecting fuel, whereupon fuel is positively displaced out of a damping chamber via a damping path, in which a damping throttle is disposed. To assure stable injection performance, the damping path is embodied such and connected in such a way to the filling path that the fuel positively displaced from the damping chamber via the damping throttle in an injection event reaches the filling path of the pressure booster pressure chamber via the damping path.

Fuel injection system

Kraftstoffeinspritzventil fur Brennkraftmaschinen mit einem in einem Ventilkorper (1) ausgebildeten auseren Ventilsitz (107), der eine Konusform mit einem auseren Offnungswinkel (a) aufweist und von dem wenigstens eine ausere Einspritzoffnung (10) abgeht. Weiter ist ein innerer Ventilsitz (207) ausgebildet, der ebenfalls eine Konusform mit einem inneren Offnungswinkel (b) aufweist und von dem wenigstens eine innere Einspritzoffnung (12) abgeht. Im Ventilkorper (1) ist eine Ventilhohlnadel (15) angeordnet, die eine ausere Ventildichtflache (30) aufweist, mit der sie mit dem auseren Ventilsitz (107) zusammenwirkt und so die Offnung der wenigstens einen auseren Einspritzoffnung (10) steuert. In der Ventilhohlnadel (15) ist eine Ventilnadel (17) angeordnet, die mit einer inneren Ventildichtflache (32) mit dem inneren Ventilsitz (207) zur Steuerung der wenigstens einen inneren Einspritzoffnungen (12) zusammenwirkt, wobei die Offnungswinkel (a; b) des inneren Ventilsitzes (207) und des auseren Ventilsitzes (107) verschieden sind.

Kraftstoffeinspritzventil für Brennkraftmaschinen

Between a movable core chamber and a fuel supply passage, a needle guide slidably supports a needle fixed to a movable core. The needle guide has a communication hole which fluidly connects the movable core chamber and the fuel supply passage. An opening sectional area of the communication hole is defined in such a manner that a fuel discharged amount decreases as an energization start time of a coil is delayed. In a suction stroke, it is restricted that the movable core and the needle bounce toward the fixed core after the needle biases a suction valve toward a stopper by means of a biasing force of a second spring. A relationship between the energization start time of the coil and the fuel discharged amount is properly maintained, so that the fuel discharged amount of the high-pressure pump can be controlled correctly.

High pressure pump

The invention relates to a fuel-injection valve, in particular a high-pressure injection valve for directly injecting fuel into a combustion chamber of a compressed-mixture, spark-ignition internal combustion engine. Said valve is characterised in that an outlet opening (23) is provided downstream of the valve seat (20), the downstream end of said opening having a slit-forming element (30) that to a great extent closes the outlet opening (23). A slit-type flow outlet (35), through which a fuel spray can be discharged in a fan-type jet, is formed between the slit-forming element (30) and a front face (34) of the valve seat body (16).

Fuel-injection valve

Disclosed is a fuel injection device (1) for internal combustion engines, comprising a control chamber (2) that is connected to a high-pressure end (5), and a control valve (6) which is connected to said control chamber (2) by means of a valve connection (8) located at a low-pressure end while being connected to a low-pressure end (7) by means of a first valve connection (9) located at a low-pressure end via a first discharge throttle (11). A second valve connection (10) of the control valve (6), which is located at a low-pressure end, is connected to the low-pressure end (7) via a second discharge throttle (12). The connection between the valve connection (8) located at a high-pressure end and the low-pressure end (7) is blocked in a first valve position while said valve connection (8) located at a high-pressure end is connected to both valve connections (9, 10) located at a low-pressure end in a second valve position and is connected to one of the two valve connections (9, 10) located at a low-pressure end in a third valve position.

Fuel injection device comprising a 3/3-way control valve for forming the injection process

The injector (10) has an actuator (16) e.g. piezo actuator, for actuating a switching valve (36), which is mounted in an injector body (12), and a control area (78) that is pressure-loaded by a discharge channel (70) and loaded with fuel that stays under a system pressure over a high pressure inlet (80). The actuator is supported in the body in a temperature-limited extension of the actuator. The actuator is integrated in a support (28) that includes a weakening zone (30), which reduces rigidity of the support in an axial direction. The support surrounds a valve unit (38) of the valve.

Fuel injector for internal combustion engine, has actuator for actuating switching valve mounted in injector body, and control area that is pressure-loaded and loaded with fuel that stays under system pressure over high pressure inlet

The invention relates to a valve for liquids, comprising a mobile valve element (5) on which a sealing surface (7) is configured and which interacts with a valve seat (9). The movement of the valve element (5) causes a cross-section of flow to be opened or closed, depending on whether the valve element (5) sits on the valve seat (9) or is lifted off. This causes high mechanical loads in the area of the valve seat (9) especially in valves that operate at a high liquid pressure. In order to reduce wear in this area, the sealing surface (7) and/or the valve seat (9) are rendered harder by embossing their surfaces with silicon oxide-containing particles (32), resulting in a solidification of the texture and thus reduced wear. The invention also relates to a method for producing the inventive valve whereby a test liquid including silicon oxide-containing particles (32) is introduced into the valve. The movement of the valve element (5) causes the particles (32) to be embossed into the surfaces, thereby hardening the same.

Wear-resistant valve for liquids and method for producing the same

Bei einer Kraftstoffeinspritzvorrichtung (1) fur Brennkraftmaschinen mit einem zwischen einer Hoch- und einer Niederdruckseite (5, 7) angeordneten Steuerventil (6), das die Verbindung eines Steuerraums (2) zur Niederdruckseite (7) offnet oder sperrt, und mit einer zwischen Steuerventil (6) und Niederdruckseite (7) angeordneten Ablaufdrossel (8) weist das Steuerventil (6) eine erste Ventilposition, in der die Verbindung des Steuerraums (2) zur Niederdruckseite (7) gesperrt ist, eine zweite Ventilposition, in der der Steuerraum (2) mit der Niederdruckseite (7) uber einen ersten Ablaufkanal (14) verbunden ist, und eine dritte Ventilposition, in der der Steuerraum (2) mit der Niederdruckseite (7) uber einen eine Ablaufdrossel (15) aufweisenden zweiten Ablaufkanal (16) verbunden ist, auf.

Kraftstoffeinspritzvorrichtung mit einem 3/3-wege-steuerventil zur einspritzverlaufsformung

The device has a piezoactuator (2), a converter for converting the actuator's stroke, a control valve (14) operated by the converter and a device (27) for temperature compensation, whereby the converter is in the form of a membrane (3) that is tensioned with a spring element (9), especially a plate spring or a spiral spring.

Liquid control valve, especially for fuel injection, has actuator stroke converter, control valve operated by converter, temperature compensation membrane tensioned by spring element

Friedrich Boecking

Papers

Fuel injection device comprising a 3/3-way control valve for forming the injection process

Fuel injector for internal combustion engine, has actuator for actuating switching valve mounted in injector body, and control area that is pressure-loaded and loaded with fuel that stays under system pressure over high pressure inlet

Wear-resistant valve for liquids and method for producing the same

Kraftstoffeinspritzvorrichtung mit einem 3/3-wege-steuerventil zur einspritzverlaufsformung

Liquid control valve, especially for fuel injection, has actuator stroke converter, control valve operated by converter, temperature compensation membrane tensioned by spring element