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

The invention relates to an injector for injecting fuel, which is under extremely high pressure, into the combustion chambers of an internal combustion engine. A valve body is provided, which opens and closes a valve chamber received in the injector housing, and an inlet leads from the valve body to the injection nozzle. For actuating the valve body, a control chamber of the injector housing is pressure-relieved by means of a control element. The inlet originating at the high-pressure collection chamber (common rail), extends centrally through the valve body, which is received movably in the injector housing.

Injector with central high-pressure connection

Die Erfindung bezieht sich auf einen Injektor, zum Einspritzen von unter hohem Druck stehendem Kraftstoff in die Brennraume einer Verbrennungskraftmaschine. Im Injektorgehause (2) des Injektors (1) sind ein Steuerteil (3) und eine Dusennadel (30) bewegbar aufgenommen, wobei der Einspritzdusenzulauf (35) durch Ansteuerung eines Ventilraumes (12) und Druckentlastung eines Steuerraumes (36) geoffnet wird. Im Injektorgehause (2) des Injektors (1) sind Steuerraume (36, 37) zur Betatigung von Dusennadel (30) und Steuerteil (3) vorgesehen, die uber ein gemeinsames Steuerventil druckentlastbar sind.

Druckgesteuerter Injektor mit gesteuerter Düsennadel

The invention relates to a high-pressure radial piston pump for the fuel supply of an internal combustion engine, comprising a housing (1) having a drive shaft (2) that is accommodated therein, rotates about an axis and has a cam or eccentric disk (3) projecting in the radial direction by means of which multiple pistons (5) accommodated in cylinders (4) are engaged, which can be successively displaced in the radial direction by the cam or eccentric disk (3), wherein the housing (1) is equipped with a mounting flange for mounting the same to the internal combustion engine, wherein the cylinders (4) are connected via fuel lines, which are proportionately accommodated in the housing (1). The mounting flange (6) and the housing (1) are formed by separate parts. A low-pressure unit (7) is attached to the side of the housing (1) facing away from the mounting flange (6), wherein the mounting flange (6) and the low-pressure unit (7) are connected to the housing such that they can rotate relative to each other and to the housing (1) and together with the housing (1) limit annular channels (8) which concentrically surround the drive shaft (2), and wherein the fuel lines comprise lines that are proportionately formed by means of the annular channels (8).

High-pressure radial piston pump

The invention relates to a control unit ( 4 ) for controlling the pressure buildup in a pump unit ( 2 ), with a control valve ( 5 ) and a valve actuation unit ( 6 ) connected to it, wherein the control valve ( 5 ) is embodied as an I-valve that opens inward in the flow direction, which has a valve body ( 11 ) that is supported so that it can move axially in a housing ( 12 ) of the control unit ( 4 ) and rests against a valve seat ( 13 ) of the control valve ( 5 ) from the inside when the control valve ( 5 ) is closed. In order to produce a control unit ( 4 ) whose control valve ( 5 ) requires lower valve actuation forces and has short switching times, the invention proposes a control unit ( 4 ) which is characterized by means of an axially effective surface of the valve body ( 11 ) which surface is embodied in such a way that the forces, which act on the valve body ( 11 ) when the control valve ( 5 ) is closed and are due to the pressure present in the pump unit ( 2 ), cancel each other out.

Control unit for controlling a pressure build-up in a pump unit

Die Kraftstoffeinspritzeinrichtung weist eine Hochdruckpumpe (10) auf, durch die Kraftstoff in einen Hochdruckbereich gefordert wird, in dem wenigstens ein Injektor (12) angeordnet ist, durch den Kraftstoff an einem Zylinder der Brennkraftmaschine eingespritzt wird. Durch eine elektrische Steuereinrichtung (18) wird die Kraftstoffeinspritzung des wenigstens einen Injektors (12) gesteuert. Es ist ein Druckregelventil (42) zum Einstellen des im Hochdruckbereich herrschenden Drucks vorgesehen, durch das eine Verbindung (44) des Hochdruckbereichs mit einem kraftstoffgefullten Niederdruckbereich gesteuert wird und das durch die Steuereinrichtung (18) angesteuert wird. Das Druckregelventil (42) befindet sich in nicht durch die Steuereinrichtung (18) angesteuertem Zustand in seiner geoffneten Schaltstellung, so dass die Verbindung (44) des Hochdruckbereichs mit dem Niederdruckbereich geoffnet ist. Durch das Druckregelventil (42) wird somit vermieden, dass es nach Abstellen der Brennkraftmaschine im Hochdruckbereich bei Abkuhlung des Kraftstoffs zu Gasbildung kommt.

Friedrich Boecking

Papers

Injector with central high-pressure connection

Druckgesteuerter Injektor mit gesteuerter Düsennadel

High-pressure radial piston pump

Control unit for controlling a pressure build-up in a pump unit

Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine