Patents by Inventor Helmut Rembold

Helmut Rembold has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20080198529
    Abstract: A method for controlling a solenoid valve, particularly in a motor vehicle. The inventive method is characterized by applying a first voltage (U—1) to a coil (21) of the solenoid valve (22) until a first point in time (t—1) and then applying a second voltage (U—2) with a smaller value. The first point in time t—1 precedes the point in time at which the solenoid valve (22) reaches its final position.
    Type: Application
    Filed: March 14, 2005
    Publication date: August 21, 2008
    Inventor: Helmut Rembold
  • Patent number: 7401593
    Abstract: A high-pressure fuel pump with a pressure relief valve which has improved hydraulic properties and a reduced number of high-pressure sealing points.
    Type: Grant
    Filed: March 2, 2005
    Date of Patent: July 22, 2008
    Assignee: Robert Bosch GmbH
    Inventors: Helmut Rembold, Peter Ropertz, Victorio Toscano
  • Patent number: 7387109
    Abstract: 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.
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: June 17, 2008
    Assignee: Robert Bosch GmbH
    Inventors: Helmut Rembold, Ruediger Schnell, Bernd Schroeder
  • Patent number: 7301749
    Abstract: 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.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: November 27, 2007
    Assignee: Robert Bosch GmbH
    Inventors: Helmut Rembold, Juergen Eckhardt, Bernd Schroeder
  • Patent number: 7281519
    Abstract: 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.
    Type: Grant
    Filed: March 18, 2004
    Date of Patent: October 16, 2007
    Assignee: Robert Bosch GmbH
    Inventors: Bernd Schroeder, Oliver Albrecht, Manuel Schoepke, Helmut Rembold
  • Publication number: 20070020131
    Abstract: 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.
    Type: Application
    Filed: March 18, 2004
    Publication date: January 25, 2007
    Inventors: Bernd Schroeder, Oliver Albrecht, Manuel Schoepke, Helmut Rembold
  • Publication number: 20060007628
    Abstract: 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.
    Type: Application
    Filed: June 29, 2005
    Publication date: January 12, 2006
    Inventors: Helmut Rembold, Juergen Eckhardt, Bernd Schroeder
  • Publication number: 20050205065
    Abstract: A high-pressure fuel pump with a pressure relief valve which has improved hydraulic properties and a reduced number of high-pressure sealing points.
    Type: Application
    Filed: March 2, 2005
    Publication date: September 22, 2005
    Inventors: Helmut Rembold, Peter Ropertz, Victorio Toscano
  • Publication number: 20050115543
    Abstract: 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.
    Type: Application
    Filed: October 21, 2004
    Publication date: June 2, 2005
    Inventors: Helmut Rembold, Ruediger Schnell, Bernd Schroeder
  • Patent number: 6889656
    Abstract: 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.
    Type: Grant
    Filed: April 26, 1999
    Date of Patent: May 10, 2005
    Assignee: Robert Bosch GmbH
    Inventors: Helmut Rembold, Kurt Frank
  • Patent number: 6889665
    Abstract: 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.
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: May 10, 2005
    Assignee: Robert Bosch GmbH
    Inventor: Helmut Rembold
  • Publication number: 20040223856
    Abstract: A high-pressure fuel supply pump for an internal combustion engine includes a pump housing and an electromagnetic actuator mechanism that can adjust the fluid quantity supplied by the fuel supply pump. The actuator mechanism is integrated into the pump housing so that a magnetic circuit of the actuator mechanism is closed by at least a region of the pump housing.
    Type: Application
    Filed: May 7, 2004
    Publication date: November 11, 2004
    Applicant: Robert Bosch GmbH
    Inventors: Helmut Rembold, Wolfgang Bueser, Martin Benda, Bernd Schroeder
  • Patent number: 6792915
    Abstract: The fuel supply apparatus for supplying fuel to an internal combustion engine has a fuel tank (2), a first fuel pump (6) that supplies fuel from the fuel tank to a fuel line (10), a second fuel pump (12) that supplies fuel from the fuel line (10) via a pressurized line to at least one fuel valve (16) and a fuel return line (22) that connects the fuel line (10) to the fuel tank for return of excess fuel. A shut off valve (30), which is closed at high temperatures, and a pressure regulator valve (26) are arranged hydraulically in series in the fuel return line (22). A fuel scavenger line (60) is provided, by which fuel at high temperatures is returned to the fuel tank (2). The fuel scavenger line (60) conducts the fuel back to the fuel tank (2), at least partially through the second fuel pump (12) 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 (12).
    Type: Grant
    Filed: August 13, 2001
    Date of Patent: September 21, 2004
    Assignee: Robert Bosch GmbH
    Inventors: Helmut Rembold, Karl Gmelin, Volkmar Goldschmitt, Jens Wolber, Mathias Schumacher, Edmund Schaut, Uwe Mueller, Markus Amler
  • Patent number: 6772738
    Abstract: 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.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: August 10, 2004
    Assignee: Robert Bosch GmbH
    Inventors: Helmut Rembold, Klaus Joos, Jens Wolber, Thomas Frenz, Markus Amler, Hansjoerg Bochum, Hans-Peter Harnisch, Peter Ropertz, Klaus Lang, Wolfgang Saatmann
  • Patent number: 6769414
    Abstract: 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.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: August 3, 2004
    Assignee: Robert Bosch GmbH
    Inventors: Helmut Rembold, Jens Wolber, Uwe Mueller, Markus Amler
  • Patent number: 6712044
    Abstract: 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.
    Type: Grant
    Filed: August 23, 2001
    Date of Patent: March 30, 2004
    Assignee: Robert Bosch GmbH
    Inventors: Helmut Rembold, Ferdinand Grob, Hartmut Bauer, Uwe Maienberg, Klaus Scherrbacher
  • Publication number: 20040047746
    Abstract: A piston pump (20), in particular a high-pressure pump for a fuel system of an internal combustion engine, includes a housing (72). In addition, a piston (94) is provided, which defines a working chamber 100. A drive shaft (78) is supported in the housing (72) by means of at least one shaft bearing and has at least one crank section (86). A piston bearing supports the piston (94) at least indirectly against the crank section (86) of the drive shaft (78). At least one of the bearings between parts that move in relation to one another is a hydrostatic bearing (62). This hydrostatic bearing is connected to the working chamber (100) by means of a fluid connection. In order to increase the efficiency of the piston pump (20), the invention proposes that the fluid connection between the working chamber (100) and the hydrostatic bearing (62) be provided with a device (56; 118) that can intermittently interrupt the fluid connection.
    Type: Application
    Filed: September 16, 2003
    Publication date: March 11, 2004
    Inventor: Helmut Rembold
  • Patent number: 6679475
    Abstract: 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.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: January 20, 2004
    Assignee: Robert Bosch GmbH
    Inventors: Helmut Rembold, Walter Teegen, Walter Lorch, Gerhard Wiltschek, Klaus Geistefeldt, Juergen Haller, Uwe Mueller, Harald Lang
  • Patent number: 6655362
    Abstract: 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.
    Type: Grant
    Filed: October 24, 2001
    Date of Patent: December 2, 2003
    Assignee: Robert Bosch GmbH
    Inventors: Helmut Rembold, Bruno Schmidt, Dietmar Krieg, Mathias Schumacher, Uwe Mueller
  • Patent number: 6615807
    Abstract: 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.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: September 9, 2003
    Assignee: Robert Bosch GmbH
    Inventors: Helmut Rembold, Udo Hafner, Winfried Moser, Matthias Philipp, Klaus Joos, Karl Gmelin, Bernd Herrmann, Volkmar Goldschmitt, Thomas Frenz, Ruediger Weiss, Edmund Schaut, Uwe Mueller, Markus Amler, Hansjoerg Bochum