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

Eine Kraftstoffeinspritzduse fur selbstzundende Brennkraftmaschine mit einem Dusenkorper (30), bei dem im Grund einer Sackbohrung (37) eine konische Sitzflache (32) gebildet ist, von der Spritzoffnungen (34) ausgehen, und mit einer Ventilnadel, die mit einem Fuhrungsabschnitt im Eingangsbereich der Sackbohrung (37) entgegen einer Schlieskraft und entgegen der Kraftstoffstromungsrichtung verschiebbar gefuhrt ist und die am Ende eines an den Fuhrungsabschnitt anschliesenden Ventilschafts (10) einen mit der Sitzflache (32) zusammenwirkenden Schlieskegel (12) hat, wobei der Ventilschaft (10) umfangsseitig einen Ringraum (40) fur die Kraftstoffzufuhrung begrenzt, ist dadurch gekennzeichnet, das im Ubergangsbereich zwischen dem Ventilschaft (10) und dem Schlieskegel (20) eine Drosseleinrichtung mit veranderbarem Drosselquerschnitt angeordnet ist, durch welche abhangig von der Axialverschiebung der Ventilnadel die Einspritzmenge variierbar ist.

Kraftstoffeinspritzdüse für selbstzündende brennkraftmaschinen

Minimum raw emissions with maximum engine performance, a noise level comparable with that of gasoline engines, and continuing unmatched fuel economy — these are the requirements for future diesel applications. One of the major challenges is clearly going to be compliant with future EU emissions standards. This will be possible only injecting precisely metered diesel fuel quantities into the combustion chamber. Here today’s state-of-the-art common rail injection systems will continue to play a key role in diesel technology. The functional spectrum of Bosch common rail systems, from second to fourth generations, now gives automotive manufacturers a comprehensive range of injection technology for meeting the above objectives, in combination with engine design features and exhaust gas aftertreatment.

Passenger car common rail systems for future emissions standards

The invention relates to a hydraulic control device (60), in particular for an injector (16) in an automative fuel injection system (10). Known control devices have a piezoelectric actuator. Said actuator controls an A-valve type directional control valve (75) having a valve member (74) inserted into a valve bore (76). According to the invention, a translator (62) which reverses the ejection movement of said actuator (52) is placed between said actuator (52) and the valve member (74). A directional control valve (75) is provided as a 3/2 directional valve which opens to the inside. The valve member (74) of said valve alternately opens or interrupts hydraulic connections between hydraulic channels (86, 88, 92) by cooperating with a valve seat (98) and a control edge (96).

Hydraulic control device, in particular for an injector

The invention relates to a common rail system for supplying fuel to internal combustion engines, especially diesel engines of passenger vehicles, comprising a central high pressure fuel accumulator (4) which is connected to several injectors by high pressure fuel lines (5, 7,8), the opening and closing movements of said injectors each being controlled by a control device (13; 17, 19), respectively. The aim of the invention is to provide a common rail system that is suitable for vehicle motors . To this end, the high pressure fuel accumulator (4) and the control devices (13; 17, 19) are combined in one module which is permanently connected to the injectors by high pressure fuel lines (7,8).

Common-rail-system

Niedrigere Rohemissionen bei gleichzeitig hoherer Motorperformance, ein mit Ottomotoren vergleichbares Gerauschniveau und ein konkurrenzlos niedriger Verbrauch — so lauten die Anforderungen an kunftige Dieselapplikationen. Eine der grosten Herausforderungen stellen dabei die kunftigen EU-Emissionsstandards dar. Zu deren Erfullung ist eine hochprazise Zumessung von Dieselkraftstoff in den Brennraum gefordert. Hierbei spielen moderne Einspritzsysteme auch kunftig eine Schlusselrolle. Das funktionale Spektrum der Common-Rail-Systeme von Bosch von der zweiten bis hin zur vierten Generation bietet ein umfassendes Portfolio an Einspritztechnik, um die genannten Ziele in Kombination mit Motormasnahmen und der Abgasnachbehandlung zu erreichen.

Friedrich Boecking

Papers

Kraftstoffeinspritzdüse für selbstzündende brennkraftmaschinen

Passenger car common rail systems for future emissions standards

Hydraulic control device, in particular for an injector

Common-rail-system

Pkw-Common-Rail-Systeme für künftige Emissionsanforderungen