Patents by Inventor Hamid Sayar

Hamid Sayar 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: 20200018276
    Abstract: A fluid injector for injecting fluid is disclosed, including a body, a fluid passageway defined through the body and extending from an inlet to an outlet of the fluid injector; a valve seat disposed internally of the body and forming part of the passageway; and a valve element that is selectively reciprocated relative to the valve seat to close and open the passageway to the flow of fluid by seating and unseating the valve element on and from the valve seat, respectively. The fluid injector further includes an orifice disc disposed in the passageway downstream of the valve seat in a direction of the flow of fluid through the fluid injector. The orifice disc includes a plurality of dimples and a plurality of orifices defined through the orifice disc, with each dimple including at least one orifice defined therethrough.
    Type: Application
    Filed: July 16, 2018
    Publication date: January 16, 2020
    Applicant: Continental Automotive Systems, Inc.
    Inventors: Cesar Elpidio Castejon Reyes, Hamid Sayar
  • Patent number: 9151201
    Abstract: Dosing structure (30) supplies diesel fuel to an exhaust passage of a diesel system. The dosing structure includes an electrically operated control valve (31). An inlet tube (45) is coupled with an inlet of the control valve. A first welded joint (6) is between the inlet tube and the control valve. The inlet tube is constructed and arranged to be coupled to a supply of diesel fuel for feeding fuel to the control valve. A dosing valve (32) is constructed and arranged to receive fuel from the control valve and deliver the fuel to the exhaust passage. An extension tube (33) is fluidly coupled between the control valve and the dosing valve to space the control valve from the dosing valve. A second welded joint (62) is between the extension tube and the control valve and a third welded joint (64) is between the extension tube and the dosing valve.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: October 6, 2015
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Michael J. Hornby, Stephen C. Bugos, Hamid Sayar, David Stockmaster
  • Patent number: 9074566
    Abstract: A heat exchanger, internal to an injector for a variable spray fuel injection system, uses nucleate boiling to maximize the heat flux from the heated metal to the fuel, wherein the nucleate boiling occurs along a control surface characterized by features conducive to generating detaching bubbles to transfer heat energy in a vapor flux. The source of heat flux may be an induction heater coil magnetically coupled to an appropriate loss component so that fuel inside a fuel component is heated to a desired temperature.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: July 7, 2015
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Perry Czimmek, Hamid Sayar
  • Patent number: 8967124
    Abstract: A fuel injector assembly includes a first coil that induces a time varying magnetic field into a second coil that is utilized to heat fuel flowing through the fuel injector. A first coil receives a first signal from a driver to generate a first magnetic field that moves an armature between an open and closed position. The second coil generates a second magnetic field generated by a current induced by the first coil into the second coil. The induced current is generated by an alternating current signal that is interposed onto a direct current signal sent to the first coil. The alternating current signal produces a time varying second magnetic field that induces heating of a magnetically active component with the fuel flow that in turn heats the fuel.
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: March 3, 2015
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Michael J. Hornby, John F. Nally, Jr., Hamid Sayar, Perry Robert Czimmek
  • Patent number: 8695901
    Abstract: A fuel injector assembly includes a first coil driven by a direct current driver and a second coil driven by an alternating current driver where both the first coil and the second coil share a common connection to reduce the number of external terminal connections. The second coil generates a second magnetic field that is utilized to heat a component in thermal contact with the fuel flow that in turn heats fuel before exiting the fuel injector.
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: April 15, 2014
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Michael J. Hornby, John F. Nally, Jr., Hamid Sayar, Perry Robert Czimmek
  • Publication number: 20120267448
    Abstract: A heat exchanger, internal to an injector for a variable spray fuel injection system, uses nucleate boiling to maximize the heat flux from the heated metal to the fuel, wherein the nucleate boiling occurs along a control surface characterized by features conducive to generating detaching bubbles to transfer heat energy in a vapor flux. The source of heat flux may be an induction heater coil magnetically coupled to an appropriate loss component so that fuel inside a fuel component is heated to a desired temperature.
    Type: Application
    Filed: December 21, 2011
    Publication date: October 25, 2012
    Applicant: CONTINENTAL AUTOMOTIVE SYSTEMS US, INC.
    Inventors: Perry Czimmek, Hamid Sayar
  • Patent number: 7762478
    Abstract: A gasoline unit injector includes a high speed, high force actuator such as a magnetrostrictive or piezoelectric actuator. The actuator operates a positive displacement diaphragm pump. The pumping volume is isolated from a supply rail by an inlet check valve, and is isolated from the engine manifold by an outlet check valve. Each of the check valves includes a disk having a central anchor and a peripheral valve seat. Diaphragm movement reduces pump volume and thereby displaces fuel at high pressure through outlet valve. Fuel spray is formed by geometry of outlet valve, the frequency of actuation, and mass and pressure of the displaced fuel. Relaxation of actuator, and therefore diaphragm, increases pump volume and thereby draws fuel into pump volume through the check valve.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: July 27, 2010
    Assignee: Continental Automotive Systems US, Inc.
    Inventors: Perry Robert Czimmek, Hamid Sayar
  • Patent number: 7677468
    Abstract: A fuel injector assembly includes a first coil that induces a time varying magnetic field into a second coil that is utilized to heat fuel flowing through the fuel injector. The second coil generates a second magnetic field generated by a current induced by the first coil into the second coil. The induced current is generated by an alternating current signal that is interposed onto a direct current signal sent to the first coil. The second coil also is electrically connected to pass current induced from the first coil into a component in thermal contact with the flowing fuel. The current from the secondary coil resistibly heats the component to provide an alternate mode of heating fuel flow.
    Type: Grant
    Filed: March 27, 2007
    Date of Patent: March 16, 2010
    Assignee: Continental Automotive Systems US, Inc.
    Inventors: Michael J. Hornby, John F. Nally, Jr., Hamid Sayar, Perry Robert Czimmek
  • Patent number: 7469845
    Abstract: A fuel injector is described. The fuel injector includes an inlet, outlet, seat, closure member, and a metering orifice disc. The metering orifice disc is disposed between the seat and the outlet. The metering orifice disc includes: a generally planar surface, a plurality of metering orifices that extends through the generally planar surface, the metering orifices being located radially outward of the seat orifice; and at least one flow channel having a cross-sectional area that decreases in magnitude starting at a location spaced from the longitudinal axis to proximate a perimeter of a metering orifice. A seat subassembly and a metering orifice disc are described. And a method of atomizing fuel is also described.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: December 30, 2008
    Assignee: Continental Automotive Systems US, Inc.
    Inventor: Hamid Sayar
  • Patent number: 7448560
    Abstract: A fuel injector is described. The fuel injector includes an inlet, outlet, seat, closure member, and a metering orifice disc. The metering orifice disc is disposed between the seat and the outlet. The metering orifice disc includes: a generally planar surface, a plurality of metering orifices that extends through the generally planar surface, the metering orifices being located radially outward of the seat orifice; and at least one flow channel having a cross-sectional area that decreases in magnitude starting at a location spaced from the longitudinal axis to proximate a perimeter of a metering orifice. A seat subassembly and a metering orifice disc are described. And a method of atomizing fuel is also described.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: November 11, 2008
    Assignee: Continental Automotive Systems US, Inc.
    Inventor: Hamid Sayar
  • Publication number: 20080105841
    Abstract: Dosing structure (30) supplies diesel fuel to an exhaust passage of a diesel system. The dosing structure includes an electrically operated control valve (31). An inlet tube (45) is coupled with an inlet of the control valve. A first welded joint (6) is between the inlet tube and the control valve. The inlet tube is constructed and arranged to be coupled to a supply of diesel fuel for feeding fuel to the control valve. A dosing valve (32) is constructed and arranged to receive fuel from the control valve and deliver the fuel to the exhaust passage. An extension tube (33) is fluidly coupled between the control valve and the dosing valve to space the control valve from the dosing valve. A second welded joint (62) is between the extension tube and the control valve and a third welded joint (64) is between the extension tube and the dosing valve.
    Type: Application
    Filed: June 11, 2007
    Publication date: May 8, 2008
    Applicant: Siemens VDO Automotive Corporation
    Inventors: Michael J. Hornby, Stephen C. Bugos, Hamid Sayar, David Stockmaster
  • Patent number: 7344090
    Abstract: A fuel injector is described. The fuel injector includes an inlet, outlet, seat, closure member, and a metering orifice disc. The metering orifice disc is disposed between the seat and the outlet. The metering orifice disc includes an outer wall having a surface that defines first and second outer chords generally about the longitudinal axis A-A. The first outer chord intersects the second chord and has a length different than the length of the second outer chord. The metering orifice disc includes an inner wall having a surface that defines first and second inner chords. The first and second inner chords extend generally transverse to the longitudinal axis A-A. The first inner chord intersects the second inner chord. The first inner chord has a length different than the length of the second inner chord. Methods of atomization and targeting are also described.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: March 18, 2008
    Assignee: Siemens VDO Automotive Corporation
    Inventor: Hamid Sayar
  • Patent number: 7306172
    Abstract: A fuel injector is described. The fuel injector includes an inlet, outlet, seat, closure member, and a metering orifice disc. The metering orifice disc is disposed between the seat and the outlet. The metering orifice disc includes a generally planar surface, at least two metering orifices, and at least one flow channel. The at least two metering orifices are generally located along an axis extending radially away from the longitudinal axis and radially outward of the seat orifice. Each of the metering orifices has a center defined by the interior surface of the metering orifice extending through the disc. The at least one flow channel extends radially away from the longitudinal axis towards each of the at least two metering orifices. And a method of atomizing fuel is also described.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: December 11, 2007
    Assignee: Siemens VDO Automotive Corporation
    Inventor: Hamid Sayar
  • Patent number: 7299997
    Abstract: A fuel injector is shown and described. The fuel injector includes an inlet, outlet, seat, closure member, and a metering orifice disc. The metering orifice disc is disposed between the seat and the outlet. The metering orifice disc includes a plurality of metering orifices disposed about the longitudinal axis and a flow channel to each metering orifice disc so that, when the inlet of the fuel injector is provided with a pressurized fluid over a range of pressure from 200 kiloPascals to 600 kiloPascals and the closure member is actuated to the first position, the metering orifice disc provides an atomized fluid having a Sauter-Mean-Diameter of less than 70 microns proximate the outlet of the fuel injector. A method of atomizing is also provided.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: November 27, 2007
    Assignee: Siemens VDO Automotive Corporation
    Inventor: Hamid Sayar
  • Publication number: 20070235569
    Abstract: A fuel injector includes a common coil that both actuates a pole-piece and provides inductive heating to a fuel flow path. In one example, a first magnetic field is generated to move the pole-piece in response to a DC signal. A structure within the fuel injector near the fuel flow path is excited and heated in response to a AC signal to the coil that generates a second magnetic field.
    Type: Application
    Filed: March 28, 2007
    Publication date: October 11, 2007
    Applicant: SIEMENS VDO AUTOMOTIVE CORPORATION
    Inventors: Michael Hornby, John Nally, Hamid Sayar, Perry Czimmek
  • Publication number: 20070235086
    Abstract: A fuel injector includes an inductive heater that generates heat inductively in a structure to rapidly heat fuel within the fuel injector. Wires are connected to the inductive heater and are arranged outside of a fuel flow path.
    Type: Application
    Filed: March 21, 2007
    Publication date: October 11, 2007
    Applicant: Siemens VDO Automotive Corporation
    Inventors: Michael J. Hornby, John F. Nally, Hamid Sayar, Perry Robert Czimmek
  • Publication number: 20070221874
    Abstract: A fuel injector assembly includes a first coil that induces a time varying magnetic field into a second coil that is utilized to heat fuel flowing through the fuel injector. A first coil receives a first signal from a driver to generate a first magnetic field that moves an armature between an open and closed position. The second coil generates a second magnetic field generated by a current induced by the first coil into the second coil. The induced current is generated by an alternating current signal that is interposed onto a direct current signal sent to the first coil. The alternating current signal produces a time varying second magnetic field that induces heating of a magnetically active component with the fuel flow that in turn heats the fuel.
    Type: Application
    Filed: March 21, 2007
    Publication date: September 27, 2007
    Applicant: Siemens VDO Automotive Corporation
    Inventors: Michael J. Hornby, John F. Nally, Hamid Sayar, Perry Robert Czimmek
  • Publication number: 20070221761
    Abstract: A fuel injector assembly includes a first coil driven by a direct current driver and a second coil driven by an alternating current driver where both the first coil and the second coil share a common connection to reduce the number of external terminal connections. The second coil generates a second magnetic field that is utilized to heat a component in thermal contact with the fuel flow that in turn heats fuel before exiting the fuel injector.
    Type: Application
    Filed: March 21, 2007
    Publication date: September 27, 2007
    Applicant: Siemens VDO Automotive Corporation
    Inventors: Michael J. Hornby, John F. Nally, Hamid Sayar, Perry Robert Czimmek
  • Publication number: 20070221748
    Abstract: A fuel injector assembly includes a first coil that induces a time varying magnetic field into a second coil that is utilized to heat fuel flowing through the fuel injector. The second coil generates a second magnetic field generated by a current induced by the first coil into the second coil. The induced current is generated by an alternating current signal that is interposed onto a direct current signal sent to the first coil. The second coil also is electrically connected to pass current induced from the first coil into a component in thermal contact with the flowing fuel. The current from the secondary coil resistibly heats the component to provide an alternate mode of heating fuel flow.
    Type: Application
    Filed: March 27, 2007
    Publication date: September 27, 2007
    Applicant: SIEMENS VDO AUTOMOTIVE CORPORATION
    Inventors: Michael J. Hornby, John F. Nally, Hamid Sayar, Perry Robert Czimmek
  • Publication number: 20070221747
    Abstract: A fuel injector includes an actuator and a heater. A common driver provides a first signal superimposed, for example, over a second signal to power both the actuator and the heater.
    Type: Application
    Filed: March 21, 2007
    Publication date: September 27, 2007
    Applicant: Siemens VDO Automotive Corporation
    Inventors: Michael J. Hornby, John F. Nally, Hamid Sayar, Perry Robert Czimmek