Patents by Inventor Peter Ropertz
Peter Ropertz 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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Patent number: 11552536Abstract: An electric motor and inverter assembly (100) used in an electric vehicle or a hybrid electric vehicle to drive the vehicle's wheels to rotate is disclosed. The electric motor and inverter assembly comprises: an electric motor (300), which includes a housing including a main shell (310), an end cover (320) and a connecting cover (330), wherein a cooling passage is formed in a wall of the housing such that coolant is able to flow in the cooling passage, and an end cover (320) and a connecting cover (330) are respectively connected to opposite ends of the main shell; and an inverter, which includes a housing (210) in which a power element and/or an electrical device is received, wherein the housing of the inverter contacts the connecting cover such that an interface is defined between the connecting cover and the housing of the inverter, and the coolant flowing through the cooling passage is able to contact the interface.Type: GrantFiled: September 18, 2017Date of Patent: January 10, 2023Assignee: Robert Bosch GmbHInventors: Tao Zhu, Yanlin Li, Xinhua Liu, Takashi Shigematsu, Heinz-Bernd Haiser, Peter Ropertz, Ralf Schmid, Shi Deng
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Patent number: 11522416Abstract: An electric drive system (100) used in an electric vehicle or a hybrid electric vehicle to drive the vehicle's wheels to rotate. The electric drive system (100) includes an electric motor (300). The electric motor (300) includes a housing in which a stator and a rotor are received. A transmission device (400) is operatively coupled to the electric motor (300); and an output shaft (500) is operatively coupled to the transmission device (400). The output shaft (500) extends from the transmission device (400) and is substantially parallel to the rotor's axis of the electric motor (300). The electric drive system (100) also includes an inverter (200) secured over the housing of the electric motor (300) such that the inverter is located between the output shaft (500) and the housing of the electric motor (300).Type: GrantFiled: September 18, 2017Date of Patent: December 6, 2022Assignee: Robert Bosch GmbHInventors: Shi Deng, Tao Zhu, Peter Ropertz, Heinz-Bernd Haiser, Takashi Shigematsu, Yanlin Li
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Patent number: 10947942Abstract: A high-pressure fuel pump for a fuel injection system of an internal combustion engine includes a pump housing and at least one fastening flange that is fixed to the pump housing by a welding. The welding has one weld region and at least one weld bead arranged laterally from the weld region. The weld bead is arranged in a receiving space formed between the pump housing and the fastening flange.Type: GrantFiled: March 23, 2017Date of Patent: March 16, 2021Assignee: Robert Bosch GmbHInventors: Soeren Stritzel, Erich Buerner, Peter Ropertz
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Patent number: 10851752Abstract: A piston fuel pump for an internal combustion engine includes a pump housing, a piston, and a non-return discharge valve. The non-return discharge valve has a valve element and a guide element configured to guide the movement of the valve element. The guide element is at least indirectly pressed in a radial manner into an opening in the pump housing.Type: GrantFiled: June 18, 2013Date of Patent: December 1, 2020Assignee: Robert Bosch GmbHInventors: Michael Kleindl, Tamim Latif, Peter Ropertz, Matthias Maess
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Publication number: 20200280238Abstract: An electric motor and inverter assembly (100) used in an electric vehicle or a hybrid electric vehicle to drive the vehicle's wheels to rotate is disclosed. The electric motor and inverter assembly comprises: an electric motor (300), which includes a housing including a main shell (310), an end cover (320) and a connecting cover (330), wherein a cooling passage is formed in a wall of the housing such that coolant is able to flow in the cooling passage, and an end cover (320) and a connecting cover (330) are respectively connected to opposite ends of the main shell; and an inverter, which includes a housing (210) in which a power element and/or an electrical device is received, wherein the housing of the inverter contacts the connecting cover such that an interface is defined between the connecting cover and the housing of the inverter, and the coolant flowing through the cooling passage is able to contact the interface.Type: ApplicationFiled: September 18, 2017Publication date: September 3, 2020Inventors: Tao Zhu, Yanlin Li, Xinhua Liu, Takashi Shigematsu, Heinz-Bernd Haiser, Peter Ropertz, Ralf Schmid, Shi Deng
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Publication number: 20200280246Abstract: An electric drive system (100) used in an electric vehicle or a hybrid electric vehicle to drive the vehicle's wheels to rotate, the electric drive system (100) comprising: an electric motor (300), said electric motor (300) including a housing in which a stator and a rotor are received; a transmission device (400) operatively coupled to the electric motor (300); and an output shaft (500) operatively coupled to the transmission device (400), wherein the output shaft (500) extends from the transmission device (400) and is substantially parallel to the rotor's axis of the electric motor (300), and wherein the electric drive system (100) also comprises an inverter (200), the inverter is secured over the housing of the electric motor (300) such that the inverter is located between the output shaft (500) and the housing of the electric motor (300), such that the system is compact in configuration and is high-integrated.Type: ApplicationFiled: September 18, 2017Publication date: September 3, 2020Inventors: Shi Deng, Tao Zhu, Peter Ropertz, Heinz-Bernd Haiser, Takashi Shigematsu, Yanlin Li
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Patent number: 10428814Abstract: A piston fuel pump for an internal combustion engine includes: a pump cylinder; and a pump piston which is movably accommodated in the pump cylinder. The pump piston is guided radially with the aid of at least a first and at least a second guide section which are spaced axially apart from each other, the first guide section being situated in a pump cylinder of the piston fuel pump, and the second guide section being situated radially outwardly in the area of the end section facing the drive. The piston fuel pump has a supporting and sealing unit for the pump piston on the first guide section, which includes a guidance area for the radial guidance of the pump piston in the pump cylinder and a sealing area having a sealing lip.Type: GrantFiled: December 17, 2013Date of Patent: October 1, 2019Assignee: Robert Bosch GmbHInventors: Peter Ropertz, Achim Laub, Heiko Jahn, Thomas Sebastian, Soeren Stritzel
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Publication number: 20190293038Abstract: A high-pressure fuel pump for a fuel injection system of an internal combustion engine includes a pump housing and at least one fastening flange that is fixed to the pump housing by a welding. The welding has one weld region and at least one weld bead arranged laterally from the weld region. The weld bead is arranged in a receiving space formed between the pump housing and the fastening flange.Type: ApplicationFiled: March 23, 2017Publication date: September 26, 2019Inventors: Soeren Stritzel, Erich Buerner, Peter Ropertz
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Patent number: 10400727Abstract: A piston fuel pump for an internal combustion engine includes a pump cylinder and a pump piston that is configured to be axially displaced in the pump cylinder. A working chamber is defined by the pump piston. A seal is provided on the pump cylinder, which seals the working chamber counter to a low pressure region. The seal is applied directly to the pump piston by an injection molding method.Type: GrantFiled: December 4, 2015Date of Patent: September 3, 2019Assignee: Robert Bosch GmbHInventors: Jochen Kaesser, Bernd Beiermeister, Soeren Stritzel, Wolfgang Ochs, Ralf Assmann, Heiko Jahn, Christian Preissner, Achim Laub, Peter Ropertz, Stefan Zaensch
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Patent number: 10352284Abstract: A piston-type fuel pump for an internal combustion engine includes a pump housing, a piston, an annular counterplate, and a non-return outlet valve. The pump housing includes a stepped opening and a piston opening. The piston is guided in the piston opening. The counterplate is pressed into the stepped opening and includes a valve seat. The non-return valve includes a valve element and a guide element. The guide element guides the valve element, is arranged radially outside the valve element and in the stepped opening, and includes a guide section, a retention section, and a support section. The guide section guides the valve element, the retention section is connected to the guide section via a radially extending connecting section, and the support section supports a valve spring. The sections are arranged axially at different points such that the guide section is between the counterplate and the support section.Type: GrantFiled: November 20, 2017Date of Patent: July 16, 2019Assignee: Robert Bosch GmbHInventors: Michael Kleindl, Tamim Latif, Peter Ropertz, Matthias Maess
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Patent number: 10288025Abstract: A piston fuel pump for an internal combustion engine includes a pump cylinder, a pump piston, and a seal. The pump piston is configured to be moved axially in the pump cylinder, wherein a working chamber is delimited by the pump piston. The seal is disposed on the pump piston and seals off the working chamber from a low-pressure region. The seal seals off an end section of the pump piston adjacent to the working chamber from the working chamber.Type: GrantFiled: December 4, 2015Date of Patent: May 14, 2019Assignee: Robert Bosch GmbHInventors: Jochen Kaesser, Bernd Beiermeister, Soeren Stritzel, Wolfgang Ochs, Ralf Assmann, Heiko Jahn, Christian Preissner, Achim Laub, Peter Ropertz, Stefen Zaensch
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Publication number: 20180180006Abstract: A piston fuel pump for an internal combustion engine includes a pump cylinder, a pump piston, and a seal. The pump piston is configured to be moved axially in the pump cylinder, wherein a working chamber is delimited by the pump piston. The seal is disposed on the pump piston and seals off the working chamber from a low-pressure region. The seal seals off an end section of the pump piston adjacent to the working chamber from the working chamber.Type: ApplicationFiled: December 4, 2015Publication date: June 28, 2018Inventors: Jochen Kaesser, Bernd Beiermeister, Soeren Stritzel, Wolfgang Ochs, Ralf Assmann, Heiko Jahn, Christian Preissner, Achim Laub, Peter Ropertz, Stefen Zaensch
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Publication number: 20180073477Abstract: A piston-type fuel pump for an internal combustion engine includes a pump housing, a piston, an annular counterplate, and a non-return outlet valve. The pump housing includes a stepped opening and a piston opening. The piston is guided in the piston opening. The counterplate is pressed into the stepped opening and includes a valve seat. The non-return valve includes a valve element and a guide element. The guide element guides the valve element, is arranged radially outside the valve element and in the stepped opening, and includes a guide section, a retention section, and a support section. The guide section guides the valve element, the retention section is connected to the guide section via a radially extending connecting section, and the support section supports a valve spring. The sections are arranged axially at different points such that the guide section is between the counterplate and the support section.Type: ApplicationFiled: November 20, 2017Publication date: March 15, 2018Inventors: Michael Kleindl, Tamim Latif, Peter Ropertz, Matthias Maess
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Publication number: 20170306912Abstract: A piston fuel pump for an internal combustion engine includes a pump cylinder and a pump piston that is configured to be axially displaced in the pump cylinder. A working chamber is defined by the pump piston. A seal is provided on the pump cylinder, which seals the working chamber counter to a low pressure region. The seal is applied directly to the pump piston by an injection molding method.Type: ApplicationFiled: December 4, 2015Publication date: October 26, 2017Inventors: Jochen Kaesser, Bernd Beiermeister, Soeren Stritzel, Wolfgang Ochs, Ralf Assmann, Heiko Jahn, Christian Preissner, Achim Laub, Peter Ropertz, Stefan Zaensch
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Publication number: 20160319795Abstract: A high pressure fuel pump for an internal combustion engine with direct fuel injection includes a pump housing, a pressure damper, and a pressure regulating valve. The pressure damper is connected to a pump inlet in a low pressure region via a first bore in the housing, and to a pump outlet in a high pressure region via a second bore in the housing. The pressure regulating valve has a limit pressure, is disposed in the second bore, is configured to open in response to a pressure in the high pressure region being greater than the limit pressure, and is configured to close in response to the pressure in the high pressure region being less than the limit pressure, such that pressure in the high-pressure region is regulated toward a constant value of the limit pressure.Type: ApplicationFiled: July 14, 2016Publication date: November 3, 2016Inventors: Bernd Schroeder, Berthold Pfuhl, Peter Ropertz
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Publication number: 20150369190Abstract: A piston fuel pump for an internal combustion engine includes: a pump cylinder; and a pump piston which is movably accommodated in the pump cylinder. The pump piston is guided radially with the aid of at least a first and at least a second guide section which are spaced axially apart from each other, the first guide section being situated in a pump cylinder of the piston fuel pump, and the second guide section being situated radially outwardly in the area of the end section facing the drive. The piston fuel pump has a supporting and sealing unit for the pump piston on the first guide section, which includes a guidance area for the radial guidance of the pump piston in the pump cylinder and a sealing area having a sealing lip.Type: ApplicationFiled: December 17, 2013Publication date: December 24, 2015Inventors: Peter Ropertz, Achim Laub, Heiko Jahn, Thomas Sebastian, Soeren Stritzel
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Publication number: 20150316013Abstract: A piston fuel pump for an internal combustion engine includes a pump housing, a piston, and a non-return discharge valve. The non-return discharge valve has a valve element and a guide element configured to guide the movement of the valve element. The guide element is at least indirectly pressed in a radial manner into an opening in the pump housing.Type: ApplicationFiled: June 18, 2013Publication date: November 5, 2015Inventors: Michael Kleindl, Tamim Latif, Peter Ropertz, Matthias Maess
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Patent number: 8202065Abstract: A high pressure fuel pump encompasses at least one delivery chamber and one high pressure outlet. in addition, a pressure limiting valve with a valve that is actuated by a pressure differential is provided that can open from the high pressure outlet to the delivery chamber. On a high pressure side of a valve seat of the pressure limiting valve, it is advantageous that a throttle device is provided, whose free cross section is at most approximately equal to a desired maximum opening cross section of the pressure limiting valve.Type: GrantFiled: April 16, 2007Date of Patent: June 19, 2012Assignee: Robert Bosch GmbHInventors: Heinz Siegel, Volkmar Goldschmitt, Martin Laich, Peter Ropertz, Siamend Flo, Klaus Lang, Joachim Zumbraegel, Rainer Wilms, Berthold Pfuhl, Victorio Toscano, Hans-Werner Schlingensief
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Publication number: 20110209687Abstract: The invention relates to a high-pressure fuel pump for an internal combustion engine with direct injection, comprising a pump housing, a low-pressure region on the intake side, and a high-pressure region on the output side. The high-pressure fuel pump comprises a purely mechanical pressure regulating device for regulating a constant pressure in the high-pressure region.Type: ApplicationFiled: September 14, 2009Publication date: September 1, 2011Inventors: Bernd Schroeder, Berthold Pfuhl, Peter Ropertz
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Publication number: 20090252621Abstract: A high pressure fuel pump encompasses at least one delivery chamber and one high pressure outlet. In addition, a pressure limiting valve with a valve that is actuated by a pressure differential is provided that can open from the high pressure outlet to the delivery chamber. On a high pressure side of a valve seat of the pressure limiting valve, it is advantageous that a throttle device is provided, whose free cross section is at most approximately equal to a desired maximum opening cross section of the pressure limiting valve.Type: ApplicationFiled: April 16, 2007Publication date: October 8, 2009Inventors: Heinz Siegel, Volkmar Goldschmitt, Martin Laich, Peter Ropertz, Siamend Flo, Klaus Lang, Joachim Zumbraegel, Rainer Wilms, Berthold Pfuhl, Victorio Toscano, Hans-Werner Schlingensief