Robert Boschgmbh

Helmut Rembold

Ernst Linder

Gottlob Haag

Walter Teegen

Manfred Ruoff

Uwe Mueller

Heinz Stutzenberger

Ferdinand Grob

Martin Muller

Markus Amler

Jens Wolber

Karl Gmelin

Martin Mueller

Hansjoerg Bochum

Christian Preussner

Bernd Schroeder

Uwe Maienberg

Hartmut Bauer

Klaus Scherrbacher

Klaus Joos

Thomas Frenz

Peter Ropertz

Hubert Dettling

Kurt Frank

Max Straubel

Udo Hafner

Helmut Laufer

Erich Schneider

Winfried Moser

Ruediger Weiss

Ewald Eblen

Tilman Miehle

Walter Schlagmuller

Wilhelm Polach

Andreas Kellner

Wolfgang Bueser

Werner-Karl Marquardt

Walter Schlagmueller

Volkmar Goldschmitt

Hans Deichsel

Edmund Schaut

Mathias Schumacher

Gerhard Wiltschek

Detlev Potz

Matthias Philipp

Alfred Schmitt

Andreas Benz

Timm Hollmann

Volkmar Leutner

Jean Pigeroulet

Helmut Fleischer

Anton Karle

Hans-Peter Stiefel

Klaus Lang

Berthold Pfuhl

Dirk Mentgen

Juergen Eckhardt

Nikolaus Simon

Wilhelm Christ

Heinz Britsch

Oliver Albrecht

Pierre Lauvin

Werner Pape

Christian Wiedmann

Hannes Pflug

Hans-Joachim Siebert

Ottmar Martin

Dominique Buisson

Hermann J Goebels

Alexander Witte

Klaus-Otto Riesenberg

Bruno H Schmidt

Juergen Haller

Albrecht Baessler

Bernd Herrmann

Dietmar Krieg

Harald Lang

Bernhard Geringer

Victorio Toscano

Bruno Frank

Wolfgang Saatmann

Hans-Peter Harnisch

Jurgen Werner

Walter Lorch

Ruediger Schnell

Manfred Wier

Rodriguez-Amaya

Achill Kessler De Vivie

Ehrtfried Baumel

Matthias Einecke

Karlheinz Schmidtpeter

Achill Kessler

Roland Ehmann

Stefan Smetana

Klaus Geistefeldt

Manuel Schoepke

Hermann Buchwald

Erwin Grommes

Marcus Wuenning

Weidong Qi

A high-pressure fuel pump with a pressure relief valve which has improved hydraulic properties and a reduced number of high-pressure sealing points.

High-pressure fuel pump with a pressure relief valve

A high-pressure fuel pump for an internal combustion engine is proposed, in which the regulating behavior in idling and lower partial-load operation is improved to such an extent that a separate pressure regulating valve in the high-pressure region of the fuel injection system can be dispensed with.

High-pressure fuel pump for an internal combustion engine

A device and method for triggering an inductor having a trigger circuit and a first and second extinguishing device, the trigger circuit triggering a switch element, which establishes or interrupts a current flow to the inductor, the trigger circuit, in the interruption of the current flow to the inductor, initially operating the first extinguishing device, and, following a free-wheeling extinction time, which does not fall below a minimum time, operating the second extinguishing device, the first and second extinguishing devices extinguishing a current induced in the inductor, and the second extinguishing device extinguishing the induced current more rapidly than the first extinguishing device.

Device and method for triggering an inductor

A plurality of piston pumps form a set of piston pumps, each including one drive region and at least one pumping region. The a set of piston pumps includes at least two piston pumps of different models, and the pumping regions of all the piston pumps the set are embodied as structurally identical pumping modules.

Set of piston type fuel pumps for internal combustion engines with direct fuel injection

In fuel supply systems with two fuel pumps connected in series and fuel valves that inject directly into the combustion chamber, there have been occasional problems. The proposal is made that in order to eliminate these problems, the first fuel pump operates with increased delivery capacity, particularly during the startup process and in the event of high fuel temperature. The fuel supply system is provided for an internal combustion engine of a vehicle.

Fuel supply system of an internal combustion engine

A high-pressure piston pump for a fuel system of an internal combustion engine, includes a housing, a piston, which defines a working chamber, and drive shaft having at least one crank section and supported in the housing by means of at least one shaft bearing. A piston bearing supports the piston at least indirectly against the crank section of the drive shaft. At least one of the bearings between parts that move in relation to one another is a hydrostatic bearing connected to the working chamber by means of a fluid connection. To increase efficiency, the fluid connection between the working chamber and the hydrostatic bearing is provided with a device operable to intermittently interrupt the fluid connection.

High pressure pump for a fuel system of an internal combustion engine, and a fuel system and internal combustion engine employing the pump

The fuel supply apparatus for supplying fuel to an internal combustion engine has a fuel tank ( ), a first fuel pump ( ) that supplies fuel from the fuel tank to a fuel line ( ), a second fuel pump ( ) that supplies fuel from the fuel line ( ) via a pressurized line to at least one fuel valve ( ) and a fuel return line ( ) that connects the fuel line ( ) to the fuel tank for return of excess fuel. A shut off valve ( ), which is closed at high temperatures, and a pressure regulator valve ( ) are arranged hydraulically in series in the fuel return line ( ). A fuel scavenger line ( ) is provided, by which fuel at high temperatures is returned to the fuel tank ( ). The fuel scavenger line ( ) conducts the fuel back to the fuel tank ( ), at least partially through the second fuel pump ( ) and through a hydraulic resistance. Gas bubble formation is prevented by a high fuel supply pressure and by transfer of heat from the second fuel pump ( ).

Fuel supply apparatus for an internal combustion engine

An injection system for internal combustion engines is proposed, in which once the engine has been turned off, a pressure equalization is established between the intake side and the pressure side of the high-pressure fuel pump. This prevents uncombusted fuel from reaching the combustion chambers of the engine. The pressure prevailing on the pressure side and the intake side when the engine is off furthermore assures that vapor bubbles cannot form, and this makes starting the engine easier.

Injection system for internal combustion engines with improved starting properties

A fuel system serves to supply fuel to an internal combustion engine includes a reservoir and a first fuel pump whose input is connected to the reservoir and a second fuel pump whose input is connected to the first fuel pump. At least one injection valve is connected to the second fuel pump and can supply fuel at least indirectly to a combustion chamber. A leakage line is provided between the second fuel pump and the reservoir. In order to permit a reliable hot start of the engine with a simultaneously low strain on the components, the leakage line is provided with a valve device which has a shutoff function and a pressure relief function that are connected in parallel with each other.

Fuel system, method for operating the fuel system, computer program and control and/or regulating unit for controlling the fuel system

A method is provided for starting an internal combustion engine which includes a starter, an ignition, pressure store and injection valves for injecting fuel directly into the engine. An electrical high pressure pump is connected to an electrical fuel pump downstream thereof for pumping the fuel into the pressure store. The electrical fuel pump and the electrical high pressure pump are first switched on together with the ignition in order to generate a pressure in the pressure store adequate for the injection of the fuel. Then, the starter is switched on after a time duration after the electric fuel pump and the electrical high pressure fuel pump are switched on.

Fuel supply system for an internal combustion engine, especially a motor vehicle

A pressure control valve serves to regulate the fuel pressure in a fuel system. The pressure control valve includes a valve housing, at least one inlet, at least one outlet, and at least one prestressed, electrically actuatable, and at least regionally ball-shaped valve member. The valve member cooperates with a valve seat structurally connected to the housing. To make it possible to achieve stable closed- and/or open-loop control properties of the pressure control valve, it is proposed that the valve seat widen conically toward the valve member, and the ball diameter of the valve member is selected such that with the valve closed, the valve member touches the valve seat in the vicinity of its farther end.

Pressure control valve

A high-pressure fuel pump which is suitable above all for use in internal combustion engines with direct gasoline injection, in which the pressure surge upon opening of a check valve between the high-pressure line and the pumping chamber of the fuel feed pump is limited by structural provisions.

High-pressure fuel pump with variable delivery quantity

A method for cooling a fuel injection system and fuel injection systems are proposed that improve the hot-starting performance of the internal combustion engine.

Method and apparatus for cooling a fuel injection system

A fuel supply system ( ) for an internal combustion engine, especially of a motor vehicle, is described which is provided with an accumulator ( ) and a pump ( ). Fuel can be supplied to the accumulator ( ) with the pump ( ). A control apparatus ( ) is provided for controlling (open loop and/or closed loop) the pressure in the accumulator ( ) by a pressure control valve ( ). With the control apparatus ( ), the pressure control valve ( ) can be closed when the engine is intended to be started but no rotational movement is yet present.

Fuel supply system for an internal combustion engine especially of a motor vehicle

Fuel supply system in an internal combustion engine

Growing community of inventors

Stuttgart, Germany

Helmut Rembold