Patents by Inventor Siamend Flo
Siamend Flo 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: 11261853Abstract: A piston pump, in particular a high-pressure fuel pump for an internal combustion engine, includes a pump housing, a pump piston, and a delivery chamber that is delimited at least by the pump housing and the pump piston. The piston pump further includes a seal configured to seal the delivery chamber and a separate guide element configured to guide the pump piston. The seal and the guide element are arranged between the pump piston and the pump housing. The seal is formed as a plastic ring with a substantially sleeve-shaped base portion.Type: GrantFiled: June 7, 2018Date of Patent: March 1, 2022Assignee: Robert Bosch GmbHInventors: Siamend Flo, Oliver Albrecht, Frank Nitsche, Andreas Plisch, Dietmar Uhlenbrock, Olaf Schoenrock, Jurij Giesler, Ekrem Cakir
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Patent number: 11168677Abstract: A piston pump, in particular high-pressure fuel pump for an internal combustion engine, includes a pump housing, a pump piston and a conveying chamber defined at least by the pump piston and the pump housing. A seal for sealing the conveying chamber and a separate guide element for guiding the pump piston may be arranged between the pump piston and the pump housing. The seal is designed as a metal sleeve, and may have a radially outwardly projecting web.Type: GrantFiled: June 7, 2018Date of Patent: November 9, 2021Assignee: Robert Bosch GmbHInventors: Siamend Flo, Oliver Albrecht, Frank Nitsche, Olaf Schoenrock, Jurij Giesler, Andreas Plisch, Dietmar Uhlenbrock, Ekrem Cakir
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Patent number: 10989186Abstract: The invention relates to a method for operating a piston pump (10) which is driven by means of a coil (1) of an electromagnet. A piston (2) of the piston pump (10) can be moved in a cylinder (3) for pumping purposes by means of the electromagnet. A voltage (U) is applied to the coil (1) during a switch-on period such that a current flows through the coil (1) and the piston (2) is accelerated, said voltage being applied by means of an actuation device (11). A time curve of an electric state variable (I, U) of the coil (1) is qualitatively detected, and the curve or a curve derived therefrom is analyzed in order to detect an impact of the piston (2) against a stop. The invention further relates to an actuation device and a piston pump.Type: GrantFiled: September 4, 2015Date of Patent: April 27, 2021Assignee: Robert Bosch GmbHInventors: Andrea Krusch, Andreas Gutscher, Siamend Flo, Thorsten Allgeier, Walter Maeurer
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Patent number: 10781814Abstract: The invention relates to a piston pump, in particular for injection systems for motorized two-wheeled vehicles and/or for motorized three-wheeled vehicles, having a compression chamber, a piston, an inlet valve, and an outlet valve. A fluid can flow into the compression chamber via the inlet valve, and the fluid can flow out of the compression chamber via the outlet valve. A region in the form of a channel, which is arranged fluidically upstream of the outlet valve, in particular directly upstream of the outlet valve, has a cross-section which is reduced compared to a compression chamber region at a distance from the outlet valve. The invention is characterized in that a piston end face facing the channel has a region which can be immersed into the channel.Type: GrantFiled: September 7, 2015Date of Patent: September 22, 2020Assignee: Robert Bosch GmbHInventors: Andreas Plisch, Jurij Giesler, Siamend Flo, Thorsten Allgeier, Walter Maeurer, Lena Maren Baessler
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Patent number: 10767644Abstract: A piston fuel pump for an internal combustion engine includes a pump cylinder and a pump piston slidably accommodated in the pump cylinder. The piston fuel pump has a supporting and sealing assembly for the pump piston. The supporting and sealing assembly includes a guiding region configured to axially guide the pump piston in the pump cylinder and a sealing region having a sealing lip.Type: GrantFiled: October 17, 2013Date of Patent: September 8, 2020Assignee: Robert Bosch GmbHInventors: Siamend Flo, Markus Hilligardt, Heiko Jahn, Franz Elischer, Cornelia Giessler, Bernd Koch
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Publication number: 20200224646Abstract: A piston pump, in particular high-pressure fuel pump for an internal combustion engine, includes a pump housing, a pump piston and a conveying chamber defined at least by the pump piston and the pump housing. A seal for sealing the conveying chamber and a separate guide element for guiding the pump piston may be arranged between the pump piston and the pump housing. The seal is designed as a metal sleeve, and may have a radially outwardly projecting web.Type: ApplicationFiled: June 7, 2018Publication date: July 16, 2020Inventors: Siamend Flo, Oliver Albrecht, Frank Nitsche, Olaf Schoenrock, Jurij Giesler, Andreas Plisch, Dietmar Uhlenbrock, Ekrem Cakir
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Publication number: 20200191129Abstract: A piston pump, in particular a high-pressure fuel pump for an internal combustion engine, includes a pump housing, a pump piston, and a delivery chamber that is delimited at least by the pump housing and the pump piston. The piston pump further includes a seal configured to seal the delivery chamber and a separate guide element configured to guide the pump piston. The seal and the guide element are arranged between the pump piston and the pump housing. The seal is formed as a plastic ring with a substantially sleeve-shaped base portion.Type: ApplicationFiled: June 7, 2018Publication date: June 18, 2020Inventors: Siamend Flo, Oliver Albrecht, Frank Nitsche, Andreas Plisch, Dietmar Uhlenbrock, Olaf Schoenrock, Jurij Giesler, Ekrem Cakir
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Patent number: 10619628Abstract: The present invention relates to a fuel pump (1) which comprises a pump housing (2), a delivery element (3) for delivering fuel, a heat-generating actuator (4) for actuating the delivery element (3), a first fuel path (5) which leads from an inlet (20) to a delivery space (7), and a second fuel path (6) which leads from the inlet (20) past the heat-generating actuator (4) to a first housing opening (21), wherein the first housing opening (21) is arranged above the inlet (20) in the vertical direction (V). The present invention also relates to a fuel pump arrangement which comprises a fuel pump (1) according to the invention and a fuel tank (10) in which the fuel pump (1) is at least partially and preferably entirely arranged. The present invention also relates to a method for operating a fuel pump (1).Type: GrantFiled: September 2, 2015Date of Patent: April 14, 2020Assignee: Robert Bosch GmbhInventors: Andreas Plisch, Frank Nitsche, Joerg Heyse, Siamend Flo, Thorsten Allgeier, Walter Maeurer, Tim Reule
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Patent number: 10605214Abstract: The present invention relates to a fuel pump for pumping fuel, comprising a piston (2) and a diaphragm seal element (3), which seals on an inner annular seal seat (4) and an outer annular seal seat (5), wherein the following equation is satisfied: (Ra2?ra2)/(ri+L)2=ra/ri, where ri is the inner radius of the inner seal seat (4), ra is the inner radius of the outer seal seat (5), Ra is the outer diameter of the piston (2) and L is a difference between an outer radius (Ria) of the inner seal seat (4) and the inner radius (ri) of the inner seal seat (4). The invention further relates to a method for operating a fuel pump.Type: GrantFiled: September 2, 2015Date of Patent: March 31, 2020Assignee: Robert Bosch GmbHInventors: Andreas Krause, Juergen Koreck, Siamend Flo, Walter Maeurer
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Patent number: 10443587Abstract: A high-pressure fuel pump includes a pump housing with a housing wall and a damping device configured to damp inlet-side pressure pulses by varying a damping volume with an elastically deformable wall. At least one section of the elastically deformable wall is formed from one or more of at least one part of a jacket-like area of the housing wall and at least one part of a sealing support. The section is embodied such that it includes at least one main part configured to vary the damping volume.Type: GrantFiled: May 13, 2014Date of Patent: October 15, 2019Assignee: Robert Bosch GmbHInventors: Siamend Flo, Oliver Albrecht, Frank Nitsche, Thorsten Allgeier, Juergen Koreck, Andreas Plisch, Gerd Teike
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Publication number: 20180023557Abstract: The invention relates to a method for operating a piston pump (10) which is driven by means of a coil (1) of an electromagnet. A piston (2) of the piston pump (10) can be moved in a cylinder (3) for pumping purposes by means of the electromagnet. A voltage (U) is applied to the coil (1) during a switch-on period such that a current flows through the coil (1) and the piston (2) is accelerated, said voltage being applied by means of an actuation device (11). A time curve of an electric state variable (I, U) of the coil (1) is qualitatively detected, and the curve or a curve derived therefrom is analyzed in order to detect an impact of the piston (2) against a stop. The invention further relates to an actuation device and a piston pump.Type: ApplicationFiled: September 4, 2015Publication date: January 25, 2018Inventors: Andrea Krusch, Andreas Gutscher, Siamend Flo, Thorsten Allgeier, Walter Maeurer
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Publication number: 20170321643Abstract: The present invention relates to a fuel pump for pumping fuel, comprising a piston (2) and a diaphragm seal element (3), which seals on an inner annular seal seat (4) and an outer annular seal seat (5), wherein the following equation is satisfied: (Ra2?ra2)/(ri+L)2=ra/ri, where ri is the inner radius of the inner seal seat (4), ra is the inner radius of the outer seal seat (5), Ra is the outer diameter of the piston (2) and L is a difference between an outer radius (Ria) of the inner seal seat (4) and the inner radius (ri) of the inner seal seat (4). The invention further relates to a method for operating a fuel pump.Type: ApplicationFiled: September 2, 2015Publication date: November 9, 2017Inventors: Andreas Krause, Juergen Koreck, Siamend Flo, Walter Maeurer
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Publication number: 20170314550Abstract: The invention relates to a piston pump, in particular for injection systems for motorized two-wheeled vehicles and/or for motorized three-wheeled vehicles, having a compression chamber, a piston, an inlet valve, and an outlet valve. A fluid can flow into the compression chamber via the inlet valve, and the fluid can flow out of the compression chamber via the outlet valve. A region in the form of a channel, which is arranged fluidically upstream of the outlet valve, in particular directly upstream of the outlet valve, has a cross-section which is reduced compared to a compression chamber region at a distance from the outlet valve. The invention is characterized in that a piston end face facing the channel has a region which can be immersed into the channel.Type: ApplicationFiled: September 7, 2015Publication date: November 2, 2017Inventors: Andreas Plisch, Jurij Giesler, Siamend Flo, Thorsten Allgeier, Walter Maeurer, Lena Maren Baessler
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Publication number: 20170268469Abstract: The present invention relates to a fuel pump (1) which comprises a pump housing (2), a delivery element (3) for delivering fuel, a heat-generating actuator (4) for actuating the delivery element (3), a first fuel path (5) which leads from an inlet (20) to a delivery space (7), and a second fuel path (6) which leads from the inlet (20) past the heat-generating actuator (4) to a first housing opening (21), wherein the first housing opening (21) is arranged above the inlet (20) in the vertical direction (V). The present invention also relates to a fuel pump arrangement which comprises a fuel pump (1) according to the invention and a fuel tank (10) in which the fuel pump (1) is at least partially and preferably entirely arranged. The present invention also relates to a method for operating a fuel pump (1).Type: ApplicationFiled: September 2, 2015Publication date: September 21, 2017Inventors: Andreas Plisch, Frank Nitsche, Joerg Heyse, Siamend Flo, Thorsten Allgeier, Walter Maeurer, Tim Reule
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Publication number: 20170254317Abstract: The invention relates to a piston pump, in particular for injection systems for motorized two-wheeled vehicles and/or for motorized three-wheeled vehicles, which piston pump comprises a housing, at least one magnetic coil, a cylinder, a piston arranged in the cylinder, and an armature plate having a stop for the piston, wherein the piston can be moved in the direction of the stop by a magnetic field produced by the magnetic coil, and wherein a magnetic circuit can be formed in the piston pump on the basis of the magnetic field, wherein in particular the piston, the cylinder, the housing, the armature plate, and the stop are components of the magnetic circuit, wherein at the stop-side reversal point of the piston, in particular when the piston hits the stop, the magnetic circuit has at least one region that has a non-magnetic material, in particular having a relative permeability ?r of not greater than 1.1.Type: ApplicationFiled: August 13, 2015Publication date: September 7, 2017Inventors: Andreas Plisch, Frank Nitsche, Siamend Flo, Thorsten Allgeier, Walter Maeurer
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Publication number: 20160131120Abstract: A high-pressure fuel pump includes a pump housing with a housing wall and a damping device configured to damp inlet-side pressure pulses by varying a damping volume with an elastically deformable wall. At least one section of the elastically deformable wall is formed from one or more of at least one part of a jacket-like area of the housing wall and at least one part of a sealing support. The section is embodied such that it includes at least one main part configured to vary the damping volume.Type: ApplicationFiled: May 13, 2014Publication date: May 12, 2016Applicant: Robert Bosch GmbHInventors: Siamend Flo, Oliver Albrecht, Frank Nitsche, Thorsten Allgeier, Juergen Koreck, Andreas Plisch, Gerd Teike
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Publication number: 20160076538Abstract: A piston pump, in particular high-pressure fuel pump, has a cylinder liner and at least one coupling element. The at least one coupling element is fastened to the cylinder liner for the retention of a valve device. The at least one coupling element is a tubular sleeve.Type: ApplicationFiled: March 26, 2014Publication date: March 17, 2016Applicant: Robert Bosch GmbHInventors: Siamend Flo, Andreas Plisch, Michael Lenz, Tamim Latif, Stefan Woerner
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Publication number: 20160032879Abstract: A high-pressure pump, in particular a plug-in pump, for a fuel system of an internal combustion engine includes a housing, and a flange that is rigidly arranged on the housing. The flange is formed from at least two parts. The pump defines a groove-shaped receiving area, and a radially inward region of the flange part is received in the receiving area. The at least two parts of the flange are held on the housing via at least one of a caulked joint and a press connection.Type: ApplicationFiled: January 14, 2014Publication date: February 4, 2016Inventors: Siamend Flo, Stefan Pfuhl, Tamim Latif, Peter Andretzky
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Publication number: 20150308394Abstract: A piston fuel pump for an internal combustion engine includes a pump cylinder and a pump piston slidably accommodated in the pump cylinder. The piston fuel pump has a supporting and sealing assembly for the pump piston. The supporting and sealing assembly includes a guiding region configured to axially guide the pump piston in the pump cylinder and a sealing region having a sealing lip.Type: ApplicationFiled: October 17, 2013Publication date: October 29, 2015Applicant: Robert Bosch GmbHInventors: Siamend Flo, Markus Hilligardt, Heiko Jahn, Franz Elischer, Cornelia Giessler, Bernd Koch
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Patent number: 9039539Abstract: An arrangement transmits a torque between a shaft and a hub. The hub has at least approximately the interior geometry of an equilateral n-sided polygon, the side surfaces of which at least approximately bear against a clutch portion, which is of circular overall cross section, of the shaft, and wherein the shaft has at least one driver portion which is rotationally conjoint with respect to the clutch portion and which extends in the direction of a corner of the n-sided polygon.Type: GrantFiled: August 30, 2011Date of Patent: May 26, 2015Assignee: Robert Bosch GmbHInventors: Siamend Flo, Frank Nitsche, Juergen Arnold