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

An injector for injecting fuel under high pressure into a combustion chamber of an internal combustion engine has an injector housing, a control valve body which is movably received in the injector housing, an actuating unit which activates the control valve body, a restoring element associated with an end side of the control valve body, the control valve body has parts which are held against one another, and a connecting element which holds the parts of the control valve body against one another.

Subdivided control valve body for injector control valve

Disclosed is a high-pressure fuel accumulator (1) whereby the hydraulic connection between the connecting tube (2) and the accumulator chamber (5) is established by means of connecting bore holes (8), thereby reducing load peaks in the region of the intersections of the bore hole (8) and the accumulator chamber (5) in such a way that the pressure resistance of the high-pressure fuel accumulator (1) is increased.

High-pressure fuel accumulator for fuel injection systems in internal combustion engines

Injecteur a haute pression

Die Erfindung bezieht sich auf einen Injektor zum Einspritzen von Kraftstoff in die Brennraume einer Verbrennungskraftmaschine. Es ist ein in einem Gehause (2) bewegbarer Injektorkorper (3) vorgesehen, dessen vertikale Hubbewegung relativ zum Gehause (2) mittels eines uber einen Aktor (10) druckentlastbaren Steuerraums (6) erfolgt. Uber die vertikale Hubbewegung des Injektorkorpers (3) erfolgt das Verschliesen oder die Freigabe einer Dusenzulaufleitung (21) zur Einspritzduse (5). Am Injektorkorper (3) sind zur Hub- bzw. Drucksteuerung des Injektors (1) versetzt zueinander ein erster Schieber (23) und ein zweiter Schieber (25) ausgefuhrt.

Hub-/ und Druckgesteuerter Injektor mit Doppelschieber

The invention relates to a piezoelectric actuator that comprises at least one piezoelectric element (2; 21; 31; 41; 42) that impinges an actuator with a tensile or pressure force. The piezoelectric actuator is further provided with stabilization elements (9; 22), preferably from steel or ceramics, that are mounted in parallel to the piezoelectric element (2; 21; 31; 41; 42), with a flexible plastic intermediate layer (11) interposed between the elements, and that prevent movements transverse to the direction of duty. The piezoelectric element (2; 21; 31; 41; 42) and the stabilization elements (9; 22) have a larger length in their effective direction (z axis) compared to their width that runs transverse to the effective direction (x, y direction).

Friedrich Boecking

Papers

Subdivided control valve body for injector control valve

High-pressure fuel accumulator for fuel injection systems in internal combustion engines

Injecteur a haute pression

Hub-/ und Druckgesteuerter Injektor mit Doppelschieber

Piezoelectric actuator with motion stabilization elements