Patents by Inventor Sascha Ambrock
Sascha Ambrock 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).
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Publication number: 20240088422Abstract: A loading plate for a fuel cell system is disclosed. A loading plate is configured to carry at least two cell stack assemblies. Each cell stack assembly includes a stack, a first end plate member and a second end plate member that grips the stack, and a fluid joint extending from the stack through the first end plate member. The loading plate includes opposing first and second surfaces and a plurality of apertures extending from the first surface through the loading plate to the second surface. Each aperture is configured to correspond to one of the fluid joints of the at least two cell stack assemblies. The loading plate is configured to carry at least two cell stack assemblies on the first surface such that the first end plate member is mounted on the first surface and such that the fluid joint extends through the plurality of apertures. Also disclosed is a fuel cell system that includes the aforementioned loading plate.Type: ApplicationFiled: August 28, 2023Publication date: March 14, 2024Inventor: Sascha Ambrock
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Patent number: 8371267Abstract: The invention relates to a high-pressure fuel pump comprising a drive shaft supported by bearings, and fuel flows through the bearings in a forced manner in such a way that the mechanical and thermal load-carrying capacity of the bearings, and thus the entire high-pressure fuel pump, is significantly increased.Type: GrantFiled: May 8, 2006Date of Patent: February 12, 2013Assignee: Robert Bosch GmbHInventors: Marcus Kristen, Achim Koehler, Sascha Ambrock, Walter Fuchs, Dietmar Ottenbacher, Bertram Schweitzer, Christian Langenbach, Joerg Wuerz, Saban Akmese, Marco Lamm, Karl-Heinz Traub
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Publication number: 20120132177Abstract: The invention relates to a high-pressure fuel pump comprising a drive shaft supported by bearings, and fuel flows through the bearings in a forced manner in such a way that the mechanical and thermal load-carrying capacity of the bearings, and thus the entire high-pressure fuel pump, is significantly increased.Type: ApplicationFiled: May 8, 2006Publication date: May 31, 2012Inventors: Marcus Kristen, Achim Koehler, Sascha Ambrock, Walter Fuchs, Dietmar Ottenbacher, Bertram Schweitzer, Christian Langenbach, Joerg Wuerz, Saban Akmese, Marco Lamm, Karl-Heinz Traub
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Publication number: 20080190502Abstract: A valve assembly of a high-pressure fuel pump includes a valve element disposed in a valve chamber and a fluid conduit adjoining the valve chamber upstream. The fluid conduit is embodied such that in at least some portions a rotation (swirl) about a longitudinal axis of the fluid conduit is impressed on the fluid stream that flows toward the valve chamber.Type: ApplicationFiled: October 21, 2004Publication date: August 14, 2008Inventors: Ulrich Maier, Sascha Ambrock, Peter Bauer, Achim Koehler
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Patent number: 7398764Abstract: Disclosed is a fuel metering unit for high-pressure pumps of fuel injection systems, whose leakproofness in zero delivery operation has been further improved and whose manufacture and assembly have been simplified.Type: GrantFiled: July 18, 2003Date of Patent: July 15, 2008Assignee: Robert Bosch GmbHInventors: Achim Koehler, Sascha Ambrock
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Publication number: 20070221162Abstract: The high-pressure pump has at least one pump element with a pump piston driven in a reciprocating motion and defining a pump work chamber into which fuel is aspirated from a fuel inlet via an inlet valve in the intake stroke and from which fuel is positively displaced in the pumping stroke. The inlet valve has a valve member which with a sealing face cooperates with a valve seat for controlling the communication of the pump work chamber with the fuel inlet. The sealing face of the valve member has two portions with first and second cone angles that are different from one another. The seat face has a constant, third cone angle that is different from the first and second cone angles. At the transition between the two portions of the sealing face, a protruding edge is formed, with which the sealing face comes to rest on the seat face with the constant cone angle.Type: ApplicationFiled: April 18, 2005Publication date: September 27, 2007Inventors: Achim Koehler, Sascha Ambrock
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Patent number: 7273036Abstract: A high-pressure a radial piston fuel pump in which the intake valves are embodied as ball valves, which has an advantageous effect on the efficiency of the high-pressure fuel pump. Moreover, the production and assembly of the high-pressure fuel pump of the invention are simplified by the use of ball valves.Type: GrantFiled: October 31, 2003Date of Patent: September 25, 2007Assignee: Robert Bosch GmbHInventors: Burkhard Boos, Stefan Kieferle, Matthias Distel, Achim Koehler, Sascha Ambrock, Karsten Ruth, Jaroslav Zivny
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Patent number: 7156076Abstract: A fuel injection apparatus having a fuel supply pump supplying fuel to a high-pressure pump which delivers fuel into a reservoir with a metering device for adjusting the fuel quantity delivered into the reservoir; the metering device has a control valve triggered by an actuator. The control valve has a valve element guided in a cylinder of a valve housing can be slid by the actuator in opposition to a spring and in cooperation with an opening in the cylinder bore connected to an inlet from the supply pump or an outlet to the high-pressure pump, controls a flow cross section from the supply pump to the high-pressure pump. The valve element can close the flow cross section at least almost completely and also control a connection of the inlet from the supply pump or of the outlet to the high-pressure pump to a discharge region, and open this connection when it closes the flow cross section.Type: GrantFiled: March 18, 2003Date of Patent: January 2, 2007Assignee: Robert Bosch GmbHInventors: Andreas Holl, Achim Koehler, Sascha Ambrock, Martin Klander
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Patent number: 7128054Abstract: The fuel injection system has a high-pressure pump, by which fuel is pumped at high pressure into a reservoir. By means of a feed pump, fuel is pumped from a fuel tank to the high-pressure pump. By means of a fuel metering device, disposed between the feed pump and the high-pressure pump, the inflow of fuel to the high-pressure pump is adjusted. From the connection between the feed pump and the fuel metering device, a bypass connection leads away to a relief region. An inflow of fuel from the feed pump to the fuel metering device and/or to the bypass connection is effected through at least one conduit in a housing part, and in the at least one conduit, at least one fuel filter is disposed upstream of the fuel metering device and/or of the bypass connection.Type: GrantFiled: February 11, 2003Date of Patent: October 31, 2006Assignee: Robert Bosch GmbHInventors: Achim Koehler, Sascha Ambrock, Petra Boehm, legal representative, Jacqueline Boehm, legal representative, Natalie Boehm, legal representative, Thomas Boehm, deceased
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Publication number: 20060239847Abstract: A high-pressure pump for a fuel injection system of an internal combustion engine, having a housing at least one pump element having a pump piston located in the housing and driven in a reciprocating motion via a transmission element by a drive shaft supported rotatably in the housing via at least one bearing point. The drive shaft has an eccentric portion on which the transmission element is rotatably supported via a bearing point. Fuel for lubrication is delivered to the bearing point of the transmission element in the eccentric portion of the drive shaft via a conduit system extending through the drive shaft.Type: ApplicationFiled: December 16, 2003Publication date: October 26, 2006Inventors: Ulrich Maier, Achim Koehler, Sascha Ambrock, Peter Bauer, Vittorio Caroli
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Patent number: 7077107Abstract: Fuel injection system having a feed pump by which fuel is pumped out of a fuel tank to the intake side of a high-pressure pump pumps fuel into a reservoir as a function of engine operating parameters. A fuel metering device is provided for adjusting the fuel quantity pumped into the reservoir by the high-pressure pump. An electrically actuated blocking valve is disposed between the feed pump and the high-pressure pump, and by means of this valve the high-pressure pump can be disconnected completely from the feed pump. By means of the blocking valve, it can still be attained that no fuel is pumped by the high-pressure pump even if the fuel metering device does not provide complete sealing.Type: GrantFiled: December 24, 2002Date of Patent: July 18, 2006Assignee: Robert Bosch GmbHInventors: Burkhard Boos, Stefan Kieferle, Matthias Distel, Achim Koehler, Sascha Ambrock
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Publication number: 20060042600Abstract: Disclosed is a fuel metering unit for high-pressure pumps of fuel injection systems, whose leakproofness in zero delivery operation has been further improved and whose manufacture and assembly have been simplified.Type: ApplicationFiled: July 18, 2003Publication date: March 2, 2006Inventors: Achim Koehler, Sascha Ambrock
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Publication number: 20060016432Abstract: The fuel injection system has a high-pressure pump, by which fuel is pumped at high pressure into a reservoir. By means of a feed pump, fuel is pumped from a fuel tank to the high-pressure pump. By means of a fuel metering device, disposed between the feed pump and the high-pressure pump, the inflow of fuel to the high-pressure pump is adjusted. From the connection between the feed pump and the fuel metering device, a bypass connection leads away to a relief region. An inflow of fuel from the feed pump to the fuel metering device and/or to the bypass connection is effected through at least one conduit in a housing part, and in the at least one conduit, at least one fuel filter is disposed upstream of the fuel metering device and/or of the bypass connection.Type: ApplicationFiled: February 11, 2003Publication date: January 26, 2006Inventors: Achim Koehler, Sascha Ambrock, Thomas Boehm, Petra Boehm
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Publication number: 20060013701Abstract: A high-pressure a radial piston fuel pump in which the intake valves are embodied as ball valves, which has an advantageous effect on the efficiency of the high-pressure fuel pump. Moreover, the production and assembly of the high-pressure fuel pump of the invention are simplified by the use of ball valves.Type: ApplicationFiled: October 31, 2003Publication date: January 19, 2006Inventors: Burkhard Boos, Stefan Kieferle, Matthias Distel, Achim Koehler, Sascha Ambrock, Karsten Ruth, Jaroslav Zivny
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Patent number: 6976473Abstract: The fuel injection system has a high-pressure pump, by which fuel is pumped into a reservoir, with which injectors disposed on cylinders of the engine communicate. A feed pump pumps fuel out of a fuel tank to the high-pressure pump and a fuel metering device triggered by a control unit and disposed between the feed pump and the high-pressure pump controls the fuel quantity delivered to the high-pressure pump. The fuel metering device is formed by a clocking valve, which is opened and closed in pulse-width-modulated fashion by the control unit, and the fuel quantity delivered to the intake side of the high-pressure pump is proportional to the opening duration of the clocking valve.Type: GrantFiled: April 23, 2003Date of Patent: December 20, 2005Assignee: Robert Bosch GmbHInventors: Burkhard Boos, Stefan Kieferle, Matthias Distel, Achim Koehler, Sascha Ambrock
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Publication number: 20050241616Abstract: A fuel injection apparatus having a fuel supply pump supplying fuel to a high-pressure pump which delivers fuel into a reservoir with a metering device for adjusting the fuel quantity delivered into the reservoir; the metering device has a control valve triggered by an actuator. The control valve has a valve element guided in a cylinder of a valve housing can be slid by the actuator in opposition to a spring and in cooperation with an opening in the cylinder bore connected to an inlet from the supply pump or an outlet to the high-pressure pump, controls a flow cross section from the supply pump to the high-pressure pump. The valve element can close the flow cross section at least almost completely and also control a connection of the inlet from the supply pump or of the outlet to the high-pressure pump to a discharge region, and open this connection when it closes the flow cross section.Type: ApplicationFiled: March 18, 2003Publication date: November 3, 2005Inventors: Andreas Holl, Achim Koehler, Sascha Ambrock, Martin Klander
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Patent number: 6959694Abstract: The fuel injection system has a high-pressure pump which pumps fuel into a reservoir to be supplied to injectors disposed at the engine cylinders. A feed pump supplies fuel to the high-pressure pump. The high-pressure pump has at least one pump element including a pump piston that defines a work chamber and is driven in a reciprocating motion; the work chamber has a communication with the compression side of the feed pump, in which an intake valve opening toward the work chamber is disposed, and through which valve fuel flows into the work chamber upon the intake stroke of the pump piston. The intake valve has a valve member, which is urged in a closing direction by a closing spring, and the closing spring is braced at least indirectly on the pump piston; with an increasing intake stroke of the pump piston, the closing force exerted on the valve member by the closing spring becomes less. A minimal opening differential pressure of the intake valve is less than 0.9 bar.Type: GrantFiled: April 23, 2003Date of Patent: November 1, 2005Assignee: Robert Bosch GmbHInventors: Stefan Kieferle, Achim Koehler, Sascha Ambrock
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Patent number: 6889657Abstract: The fuel injection device has a high-pressure pump (14) that supplies fuel to a reservoir and is connected to injectors disposed in the cylinders of the engine. A fuel-supply pump delivers fuel from a fuel tank to the suction side of the high-pressure pump. An electrically actuated control valve adjusts the quantity of fuel that the high-pressure pump delivers to the reservoir. The control valve is disposed on the pressure side of the high-pressure pump and can be switched between a first position, in which the pressure side of the high-pressure pump is closed off from a pressure relief region, and a second position, in which the pressure side of the high-pressure pump is connected to the pressure relief region.Type: GrantFiled: April 4, 2003Date of Patent: May 10, 2005Assignee: Robert Bosch GmbHInventors: Karl-Friedrich Ruesseler, Ulrich Maier, Achim Koehler, Sascha Ambrock, Peter Bauer
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Publication number: 20040155120Abstract: The fuel injection system has a feed pump (12), by which fuel is pumped out of a fuel tank (10) to the intake side of a high-pressure pump (14); the high-pressure pump (14) pumps fuel into a reservoir (16) as a function of engine operating parameters. A fuel metering device (44) is provided for adjusting the fuel quantity pumped into the reservoir (16) by the high-pressure pump (14). An electrically actuated blocking valve (46) is disposed between the feed pump (12) and the high-pressure pump (14), and by means of this valve the high-pressure pump (14) can be disconnected completely from the feed pump (12). By means of the blocking valve (46), it can still be attained that no fuel is pumped by the high-pressure pump (14) even if the fuel metering device (44) does not provide complete sealing.Type: ApplicationFiled: March 24, 2004Publication date: August 12, 2004Inventors: Burkhard Boos, Stefan Kieferle, Matthias Distel, Achim Koehler, Sascha Ambrock
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Publication number: 20040016830Abstract: The fuel injection system has a high-pressure pump, by which fuel is pumped into a reservoir, with which injectors disposed on cylinders of the engine communicate. A feed pump pumps fuel out of a fuel tank to the high-pressure pump and a fuel metering device triggered by a control unit and disposed between the feed pump and the high-pressure pump controls the fuel quantity delivered to the high-pressure pump. The fuel metering device is formed by a clocking valve, which is opened and closed in pulse-width-modulated fashion by the control unit, and the fuel quantity delivered to the intake side of the high-pressure pump is proportional to the opening duration of the clocking valve.Type: ApplicationFiled: April 23, 2003Publication date: January 29, 2004Applicant: Robert Bosch GmbHInventors: Burkhard Boos, Stefan Kieferle, Matthias Distel, Achim Koehler, Sascha Ambrock