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 a common rail injector for injecting fuel in a common rail injection system of an internal combustion engine. The common rail injector has an injector housing (1) with a fuel inlet (21) that is connected to a central high pressure fuel accumulator outside the injector housing (1) and a pressure chamber (24) inside the injector housing (1). Fuel is injected out of said pressure chamber at high pressure in accordance with the position of a control valve (33). This control valve ensures that a nozzle needle (8) that can be moved axially back and forth in a longitudinal bore (6) of the injector, against the prestressing force of a nozzle spring (19) located in a nozzle spring chamber (20), is lifted up from a seat when the pressure in the pressure chamber (24) is greater than the pressure in a control chamber (30), said control chamber being connected to the fuel inlet (21) by a fuel intake throttle (31). The aim of the invention is to provide a common rail injector of small construction volume and with a simple construction that is also economical to produce. To this end, the control chamber (30) is delimited by a sleeve (28) which is sealingly displaceable on the end of the nozzle needle (8) furthest from the combustion chamber and can be held in a position in which it rests against the injector housing (1) with the help of the nozzle spring (19).

Common rail injector

The invention relates to a high-pressure pump for a fuel injection arrangement of an internal combustion engine. The high-pressure pump (2) has a pump housing (4) with a pump housing interior (6) charged with a fuel (100). At least one pump element having a pump piston (8) is arranged in the pump housing (4). The pump piston (8) is indirectly supported by a plunger body (10) and a roller (12) on a cam (14) or on an eccentric of a drive shaft (16). The plunger body (10) can be driven in an oscillating motion (Z) in the direction of a centre axis (I) via the cam (14) or the eccentric. A roller shoe (18) is firmly connected to the plunger body (10) in the direction of the centre axis (I). The roller shoe (18) has a substantially partially cylindrical recess (20) for partially accommodating the roller (12). According to the invention, the roller shoe (18) has at least one lubrication chamber (22), fuel (100) being fed out of the pump housing interior (6) through the at least one lubricating chamber (22) during the oscillating motion (Z) of the plunger body (10) of the roller (12).

High-pressure pump

Die Erfindung betrifft einen Injektor fur Common-Rail-Einspritzsysteme von Brennkraftmaschinen, bei der der Steuerraum (30) von einem Einsatzstuck und einer Dusennadel (8) begrenzt wird. Dadurch werden die Zahl der Hochdruckdichtstellen und der benotigte Bauraum reduziert.

Common-Rail-Injektor

The invention relates to a fuel injector for internal combustion engines, comprising a valve member (1) which is guided in a blind hole (3) of a valve body (5) such that it can be axially displaced against a closing force and which at its combustion-chamber end has a conical valve sealing surface (7) with which it cooperates with a conical valve seat surface (9) at the level of the closed end of the blind hole (3) which end protrudes inwards. The fuel injector further comprises a blind hole area downstream of the conical valve seat surface (9) from which spray holes (17) lead into the combustion chamber of the internal combustion engine. The blind hole wall area (13) in which the spray holes (17) are embodied is conical and the spray holes (17) are at a defined minimum distance from the upper and lower ends of said conical blind hole wall area (13).

Fuel injector for internal combustion engines

A valve for controlling liquids which for its actuation is provided with a liquid-filled coupling chamber, which is disposed between an actuator piston of a piezoelectric actuator and a piston that actuates a valve member. To compensate for liquid losses suffered by the coupling chamber, which is briefly at high in each work cycle, the pressure difference that exists during the return stroke of the actuator piston between the coupling chamber and the opposite sides of the actuator piston and of the that actuates the valve member that are remote from the coupling chamber is utilized to achieve refilling in valveless fashion along gaps. The valve is used for use in fuel injection systems for internal combustion engines of motor vehicles.

Friedrich Boecking

Papers

Common rail injector

High-pressure pump

Common-Rail-Injektor

Fuel injector for internal combustion engines

Piezoelectrically actuated fuel injection valve