Patents by Inventor Gerhard Suenderhauf
Gerhard Suenderhauf 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: 20240044410Abstract: The invention relates to a gas valve (1), comprising: a valve body (2) which is hollow-cylindrical at least in parts and which forms a sealing seat (3) over which a gas flow path (4) is conducted, a reciprocating valve closure element (5) which is accommodated at least partly in the valve body (2) and which has a plate-like end portion (6) arranged outside the valve body, (2) which end portion interacts with the sealing seat (3), a sleeve (7) which at least partially surrounds the valve body (2) and the valve closure element (5) and which, together with the plate-like end portion (6) of the valve closure element (5), delimits an annular gap (8) which forms a throttle point in the gas flow path (4) downstream of the sealing seat (3).Type: ApplicationFiled: January 31, 2022Publication date: February 8, 2024Inventors: Andreas Koeninger, Bernd Siewert, Gerhard Suenderhauf, Michael Marzinzik
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Patent number: 11873784Abstract: A gas metering valve for an internal combustion engine. The gas metering valve includes a housing in which a gas chamber is formed, which includes an inlet opening and an outlet opening. A movable valve element is situated in the gas chamber, which is movable by an electrical actuator against the force of a return spring and which cooperates with a valve seat for opening and closing the inlet opening. A blocking valve is situated between the valve element and the outlet opening, which opens in the flow direction to the outlet opening and blocks in the opposite flow direction.Type: GrantFiled: January 27, 2021Date of Patent: January 16, 2024Assignee: ROBERT BOSCH GMBHInventors: Andreas Kremer, Andreas Koeninger, Daniel Bosse, Fabian Fischer, Gerhard Suenderhauf, Lars Olems, Marco Beier, Matthias Horn, Oezguer Tuerker, Sebastian Laechele
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Publication number: 20230130775Abstract: The invention relates to a fuel injector (10) for internal combustion engines, comprising a nozzle body (12), in which there is formed a blind bore (14), from which at least one injection opening (22) starts, and comprising a nozzle needle (26; 26a to 26g) which is arranged so as to be movable longitudinally in the nozzle body (12), with a sealing face (28) formed on the side facing towards the blind bore (14), by means of which sealing face the nozzle needle (26; 26a to 26g) interacts with a seat face (17) of the nozzle body (12) in order to control a flow of fuel to the at least one injection opening (22), and comprising a needle tip (34), which has a first edge (41) miming radially around a longitudinal axis (15) and having a first diameter (D1), which first edge is adjoined in the direction of the base of the blind bore (20) by a second edge (42) miming radially around the longitudinal axis (15) and having a second diameter (D2).Type: ApplicationFiled: May 27, 2020Publication date: April 27, 2023Inventors: Andreas Koeninger, Fabian Wolf, Gerhard Suenderhauf, Knut Kristian Baadshaug
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Publication number: 20230077533Abstract: The invention relates to an injection nozzle for injecting fuel under high pressure, comprising a nozzle body (2) in which a pressure chamber (9), which can be filled with fuel under high pressure, is formed and in which a conical body seat (25) is formed which opens into a blind hole (32), forming a transition edge (35), from which blind hole a plurality of injection holes (30) originate and the total of the flow cross-sections of all injection holes forms a total injection hole cross-section (ASL). A nozzle needle (14) is arranged in the pressure chamber (9) so as to be longitudinally movable, said nozzle needle interacting, by means of a conical sealing surface (27), with the body seat (25) in order to open and close a flow cross-section, wherein the nozzle needle (14) has, on the end thereof facing the body seat (25), a needle tip (28) which protrudes into the blind hole (32) when the sealing surface (27) contacts the body seat (25).Type: ApplicationFiled: December 8, 2020Publication date: March 16, 2023Inventors: Fabian Wolf, Christiane Schiedt, Ferdinand Nicolai, Gerhard Suenderhauf, Michael Leukart
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Publication number: 20230053845Abstract: A gas metering valve for an internal combustion engine. The gas metering valve includes a housing in which a gas chamber is formed, which includes an inlet opening and an outlet opening. A movable valve element is situated in the gas chamber, which is movable by an electrical actuator against the force of a return spring and which cooperates with a valve seat for opening and closing the inlet opening. A blocking valve is situated between the valve element and the outlet opening, which opens in the flow direction to the outlet opening and blocks in the opposite flow direction.Type: ApplicationFiled: January 27, 2021Publication date: February 23, 2023Inventors: Andreas Kremer, Andreas Koeninger, Daniel Bosse, Fabian Fischer, Gerhard Suenderhauf, Lars Olems, Marco Beier, Matthias Horn, Oezguer Tuerker, Sebastian Laechele
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Patent number: 11041471Abstract: The invention relates to a fuel injection nozzle for use in an internal combustion engine, having a nozzle body (1), in which is formed a pressure chamber (2) fillable with fuel under high pressure and in which a longitudinally displaceable nozzle needle (4) is arranged, wherein the nozzle needle (4) has a sealing face (5) with which it interacts with a conical body seat (7) formed in the nozzle body (1) and thereby opens and closes the connection from the pressure chamber (2) to a blind hole (10). The blind hole (10) forms a cylindrical section (12) directly adjoining the body seat (7) so that an inlet edge (11) is formed at the transition between the body seat (7) and the blind hole (10). In the nozzle body (1) is formed at least one injection opening (14) which opens into the blind hole (10).Type: GrantFiled: August 10, 2017Date of Patent: June 22, 2021Assignee: Robert Bosch GmbHInventors: Birgit Lenz, Gerhard Suenderhauf
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Publication number: 20200378350Abstract: The invention relates to a fuel injection nozzle for use in an internal combustion engine, having a nozzle body (1), in which is formed a pressure chamber (2) fillable with fuel under high pressure and in which a longitudinally displaceable nozzle needle (4) is arranged, wherein the nozzle needle (4) has a sealing face (5) with which it interacts with a conical body seat (7) formed in the nozzle body (1) and thereby opens and closes the connection from the pressure chamber (2) to a blind hole (10). The blind hole (10) forms a cylindrical section (12) directly adjoining the body seat (7) so that an inlet edge (11) is formed at the transition between the body seat (7) and the blind hole (10). In the nozzle body (1) is formed at least one injection opening (14) which opens into the blind hole (10).Type: ApplicationFiled: August 10, 2017Publication date: December 3, 2020Inventors: Birgit Lenz, Gerhard Suenderhauf
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Publication number: 20180372018Abstract: The invention relates to a fuel injection nozzle comprising a nozzle element (1) in which a pressure chamber (2) is formed which can be filled with pressurized fuel and in which a nozzle needle (3) is arranged in a longitudinally movable manner, a sealing surface (7) of said nozzle needle interacting with a nozzle seat (8) in order to open and close at least one injection opening (11). The nozzle needle (3) has a guide section (5) by means of which the nozzle needle is guided in a guide region (6) of the pressure chamber (2) in a radial direction. The nozzle needle (3) has a coating (20) at least in the region of the sealing surface (7), and the coating is a DLC layer (DLC=diamond-like carbon). In the open position, the nozzle needle (3) is electrically insulated from the nozzle element (1).Type: ApplicationFiled: November 15, 2016Publication date: December 27, 2018Inventors: Gerhard SUENDERHAUF, Mark-Florian FELLMANN, Ulrich MAY, Werner TESCHNER, Wilhelm CHRIST
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Patent number: 9835124Abstract: The invention relates to a fuel injector for internal combustion engines for injecting fuel at high pressure, comprising a pressure chamber formed in an injector body, in which pressure chamber a nozzle needle is arranged in a longitudinally movable manner, which nozzle needle has a cone region tapered in a combustion chamber direction and a pin region having a constant diameter d23 at a combustion-chamber end of the nozzle needle. The injector body has a substantially conical nozzle needle seat, from which a first injection opening extends, and a blind hole, which adjoins the nozzle needle seat on the combustion chamber side. The blind hole has a cylindrical segment, which has the diameter d31, and a hole base, from which a second injection opening extends. The cone region of the nozzle needle interacts with the nozzle needle seat and thereby opens and closes the first injection opening and the second injection opening with respect to the pressure chamber.Type: GrantFiled: August 5, 2014Date of Patent: December 5, 2017Assignee: Robert Bosch GmbHInventors: Andreas Koeninger, Gerhard Suenderhauf
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Patent number: 9441590Abstract: The invention relates to a fuel injection valve for injecting fuel into a combustion chamber of an internal combustion engine, having a nozzle needle (1) which is guided, such that it can perform a stroke movement, in a central bore (2) of a nozzle body (3) in order to open up or close off at least one injection opening (4), wherein the nozzle needle (1) interacts, by means of an encircling sealing region (5) formed on the combustion-chamber-side end thereof, with a sealing seat (6) that runs conically and is formed on the combustion-chamber-side end of the nozzle body (3). According to the invention, the sealing seat (6) that runs conically has an opening angle (?1) of between 30° and 50°, preferably of between 40° and 50°.Type: GrantFiled: July 19, 2010Date of Patent: September 13, 2016Assignee: Robert Bosch GmbHInventors: Wilhelm Christ, Gerhard Suenderhauf, Michael Leukart, Katja Grothe
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Publication number: 20160215745Abstract: The invention relates to a fuel injector for internal combustion engines for injecting fuel at high pressure, comprising a pressure chamber formed in an injector body, in which pressure chamber a nozzle needle is arranged in a longitudinally movable manner, which nozzle needle has a cone region tapered in a combustion chamber direction and a pin region having a constant diameter d23 at a combustion-chamber end of the nozzle needle. The injector body has a substantially conical nozzle needle seat, from which a first injection opening extends, and a blind hole, which adjoins the nozzle needle seat on the combustion chamber side. The blind hole has a cylindrical segment, which has the diameter d31, and a hole base, from which a second injection opening extends. The cone region of the nozzle needle interacts with the nozzle needle seat and thereby opens and closes the first injection opening and the second injection opening with respect to the pressure chamber.Type: ApplicationFiled: August 5, 2014Publication date: July 28, 2016Inventors: Andreas Koeninger, Gerhard Suenderhauf
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Patent number: 8720802Abstract: The invention relates to a fuel injection valve for internal combustion engines having a valve body in which a blind hole is formed, with at least one injection opening proceeding from said blind hole. A longitudinally displaceable needle in the valve body has a valve sealing face formed at its end which faces towards the blind hole. The valve sealing face is formed from one or more conical faces, and the valve needle interacting, by means of a body seat, with said valve sealing face to control a fuel flow to the at least one injection opening. A needle tip adjoining the valve sealing face dips into the blind hole when the valve needle bears against the body seat, the needle tip being curved in a concave fashion directly adjacent to the valve sealing face.Type: GrantFiled: April 6, 2006Date of Patent: May 13, 2014Assignee: Robert Bosch GmbHInventors: Andreas Kerst, Gerhard Suenderhauf, Roland Schulz
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Publication number: 20120153053Abstract: The invention relates to a fuel injection valve for injecting fuel into a combustion chamber of an internal combustion engine, having a nozzle needle (1) which is guided, such that it can perform a stroke movement, in a central bore (2) of a nozzle body (3) in order to open up or close off at least one injection opening (4), wherein the nozzle needle (1) interacts, by means of an encircling sealing region (5) formed on the combustion-chamber-side end thereof, with a sealing seat (6) that runs conically and is formed on the combustion-chamber-side end of the nozzle body (3). According to the invention, the sealing seat (6) that runs conically has an opening angle (?1) of between 30° and 50°, preferably of between 40° and 50°.Type: ApplicationFiled: July 19, 2010Publication date: June 21, 2012Applicant: ROBERT BOSCH GMBHInventors: Wilhelm Christ, Gerhard Suenderhauf, Michael Leukart, Katja Grothe
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Publication number: 20080142621Abstract: The invention relates to a fuel injection valve for internal combustion engines having a valve body in which a blind hole is formed, with at least one injection opening proceeding from said blind hole. A longitudinally displaceable needle in the valve body has a valve sealing face formed at its end which faces towards the blind hole. The valve sealing face is formed from one or more conical faces, and the valve needle interacting, by means of a body seat, with said valve sealing face to control a fuel flow to the at least one injection opening. A needle tip adjoining the valve sealing face dips into the blind hole when the valve needle bears against the body seat, the needle tip being curved in a concave fashion directly adjacent to the valve sealing face.Type: ApplicationFiled: April 6, 2006Publication date: June 19, 2008Inventors: Andreas Kerst, Gerhard Suenderhauf, Roland Schulz