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

Piezoactuator has a multilayer structure of piezolayers (2) with inner electrodes (4, 5) arranged between them. An outer electrical voltage is applied to the inner electrodes. The inner electrodes are laterally connected to the outer electrodes (6, 7). The piezoceramic of the piezolayers is a low-sintering Pb-containing material. The inner electrodes are made of an Ag/Pd alloy containing less than 30 wt.% Pd.

Piezoactuator for operating a mechanical component, such as a valves in vehicle fuel injection systems has a multilayer structure of piezolayers with inner electrodes arranged between them

Es wird ein Verfahren zum Betreiben einer Kraftstoffhochdruckpumpe einer Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine vorgeschlagen, wobei die Kraftstoffhochdruckpumpe (16) wenigstens ein Pumpenelement (24) aufweist, wobei das Pumpenelement (24) einen uber einen Stosel (32) zumindest mittelbar durch die Brennkraftmaschine (10) in einer Hubbewegung angetriebenen Pumpenkolben (26) aufweist, der einen Pumpenarbeitsraum (46) begrenzt, der durch ein elektrisch gesteuertes Ventil (48) mit einem Zulauf oder einem Entlastungsbereich verbindbar ist, wobei durch die Kraftstoffhochdruckpumpe (16) Kraftstoff in einen Kraftstoffhochdruckspeicher (18) gefordert wird, mit dem wenigstens ein Kraftstoffinjektor (20) verbunden ist, und wobei die Kraftstoffeinspritzeinrichtung eine elektronische Steuereinrichtung (22) aufweist, durch die das Ventil (48) und der wenigstens eine Kraftstoffinjektor (20) angesteuert werden. Beim Starten der Brennkraftmaschine (10) erfolgt wahrend eines ersten Forderhubs oder wahrend eines ersten Forderhubs und wenigstens eines folgenden anfanglichen Forderhubs des Pumpenkolbens (26) des wenigstens einen Pumpenelements (24) keine Kraftstoffforderung durch den Pumpenkolben (26) in den Kraftstoffhochdruckspeicher (18). Dadurch kann die Belastung der Kraftstoffhochdruckpumpe beim Starten der Brennkraftmaschine (10) gering gehalten werden.

Verfahren zum Betreiben einer Kraftstoffhochdruckpumpe einer Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine

The valve has a piezo actuator, a hydraulic converter (2) with a pressure chamber (5) between first and second pistons (3,4), a valve closure element (6) and a spring element (8) directly coupled to the second piston of the hydraulic converter. The second piston is in two parts with a cylindrical element and a rod element. Independent claims are also included for the following: the use of a valve for controling liquids in a common rail injector.

Valve for controling liquids has piezo actuator, dual piston hydraulic converter, valve closure element and spring element directly coupled to second piston of hydraulic converter

In a control valve for an injector, having a first and second valve bodies in which a valve seat is embodied in the first valve body. A control spool which is displaceably disposed in the first valve body and has a valve face which cooperates with the valve seat. Such a structure requires very little effort or expense to make the control valve and to provide a hydraulic step-up chamber in the second valve body. The control spool is provided with a guide extension, whose outer diameter is approximately equal to or slightly less than the diameter of the valve seat, and that a guide bush is disposed in the valve body and the guide extension of the control spool is displaceably received in the guide bush, and the outer diameter of the guide bush is greater than or equal to the outer diameter of the control spool.

Control valve for an injector that injects fuel into a cylinder of an engine

The invention relates to a seat valve assembly, in particular, for a fuel-injection system of an internal combustion engine. Said assembly comprises at least one annular seat surface (46) that is located between an inflow zone and an outflow zone and is centred around an axis (26) and a seat element (30), which can be displaced along the axis (26) to form or disengage a seal by co-operating with a sealing zone (46a) of the annular seat surface (46), whereby said annular seat surface (46) runs at an incline in relation to the axis (26), when viewed from a longitudinal cross-section of the axis. According to the invention, the annular seat surface (46), when viewed from the longitudinal cross-section of the axis, is curved in a convex manner on the inflow zone side, adjacent to the sealing zone (46a). This permits an extremely rapid increase in the throughput, as the seat element (30) begins to be lifted off the annular seat surface (46).

Friedrich Boecking

Papers

Piezoactuator for operating a mechanical component, such as a valves in vehicle fuel injection systems has a multilayer structure of piezolayers with inner electrodes arranged between them

Verfahren zum Betreiben einer Kraftstoffhochdruckpumpe einer Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine

Valve for controling liquids has piezo actuator, dual piston hydraulic converter, valve closure element and spring element directly coupled to second piston of hydraulic converter

Control valve for an injector that injects fuel into a cylinder of an engine

Sitzventilanordnung, insbesondere für ein Kraftstoffeinspritzsystem einer Verbrennungsmaschine