Patents by Inventor Kevin L. Vogt

Kevin L. Vogt 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).

  • Patent number: 7690361
    Abstract: A system and method for metering fuel is provided which includes a fuel supply line and a metering valve in fluid connection with the fuel supply line to control a flow of fuel through the fuel supply line. The valve is movable into a closed position to block a primary flow of fuel and create a leakage fuel flow in the fuel supply line downstream of the metering valve. The system also includes a venturi apparatus fluidly coupled to the fuel supply line upstream of the metering valve. The venturi apparatus is further coupled to the fuel supply line downstream of the metering valve to direct the leakage fuel flow out of the fuel supply line.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: April 6, 2010
    Assignee: Cummins Inc.
    Inventors: Kevin L. Vogt, Jung-Min C. Sung, Michael A. Lucas
  • Publication number: 20090084355
    Abstract: A system and method for metering fuel is provided which includes a fuel supply line and a metering valve in fluid connection with the fuel supply line to control a flow of fuel through the fuel supply line. The valve is movable into a closed position to block a primary flow of fuel and create a leakage fuel flow in the fuel supply line downstream of the metering valve. The system also includes a venturi apparatus fluidly coupled to the fuel supply line upstream of the metering valve. The venturi apparatus is further coupled to the fuel supply line downstream of the metering valve to direct the leakage fuel flow out of the fuel supply line.
    Type: Application
    Filed: September 28, 2007
    Publication date: April 2, 2009
    Applicant: Cummins Inc.
    Inventors: Kevin L. Vogt, Jung-min C. Sung, Michael A. Lucas
  • Patent number: 5979789
    Abstract: A fuel injector for effectively preventing excessive loading of a component mounted internal to the injector is provided which includes a one-piece retainer having first and second connector portions for permitting two independent loads to be applied to different internal components of the injector. The second connector portion includes threads for engaging a nozzle assembly to impart a compressive force on the nozzle assembly. The first connector portion also includes threads for engaging an outer barrel for placing a first compressive load on a load sensitive internal component, such as a center tube of an injection control valve. In this manner, the second compressive force can be set at a minimum level independent from the first compressive force to permit the size of the center tube to be minimized thereby reducing the overall size of the injector.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: November 9, 1999
    Assignee: Cummins Engine Company, Inc.
    Inventors: Jeffrey J. Sullivan, John D. Crofts, Harry L. Wilson, George L. Muntean, Kevin L. Vogt, Mustahsen Gull, John L. Long
  • Patent number: 5765755
    Abstract: An injection rate shaping nozzle assembly for a fuel injector is provided which includes a closed nozzle valve element and a rate shaping control device including an injection spill circuit for spilling a portion of the fuel to be injected to produce a predetermined time varying change in the flow rate of fuel injected into a combustion chamber. The spill circuit includes a spill passage integrally formed in the nozzle valve element. The rate shaping control device may include a spill accelerating chamber in formed in the nozzle valve element for creating a rapid increase in the spill flow rate. A spill circuit purge device is provided to remove fuel from the spill circuit and accelerating chamber between each of the injection events thereby ensuring an unimpeded, effective spill fuel flow during the next spill event.
    Type: Grant
    Filed: January 23, 1997
    Date of Patent: June 16, 1998
    Assignee: Cummins Engine Company, Inc.
    Inventors: Lester L. Peters, Julius P. Perr, A. S. Ghuman, Benjamin M. Yen, Chad L. Buchanan, Robert Samuel, Kevin L. Vogt, John T. Carroll, III, James E. Denton, David E. Schisler
  • Patent number: 5673853
    Abstract: An electromagnetic fuel injection control valve positioned inside a fuel injector, i.e. a unit injector, for providing fast response and high pressure capability while minimizing the size and complexity of the injector. The control valve includes a valve housing having a supply inlet and fuel outlet, a center tube having a center passage and an annular valve seat, a control valve sleeve slidably mounted on the center tube and an actuator assembly having a coil spring, a stator and an armature. The control valve sleeve moves between an open position permitting fuel to flow between the supply inlet and the fuel outlet and a closed position which sealingly engages the annular valve seat for blocking the flow of fuel between the supply inlet and the fuel outlet. The coil spring biases the control valve sleeve in an open position and is positioned around the center tube. The stator is also axially positioned around the center tube and includes multiple poles.
    Type: Grant
    Filed: September 13, 1995
    Date of Patent: October 7, 1997
    Assignee: Cummins Engine Company, Inc.
    Inventors: John D. Crofts, Mustahsen Gull, Edward B. Manring, Hisham K. Mozaffar, Jeffrey J. Sullivan, Kevin L. Vogt, Harry L. Wilson, George L. Muntean, Gary L. Gant, Daniel K. Hickey
  • Patent number: 5040727
    Abstract: A unit fuel injector is disclosed to be used in a fuel injection system of an internal combustion engine wherein each unit injector is operated independently from one another and in synchronization with the internal combustion engine. Specifically, the unit injector in accordance with the present invention includes a reciprocating plunger assembly within the unit injector that controls fuel metering as well as fuel injection, and a valve device positioned between a minor diameter plunger section and a cup of the unit injector so as to permit fuel flow in one direction for fuel injection and to restrict flow of gases in the opposite direction. The valve device effectively reduces carbon build-up on the injector surfaces and increases injector longevity while reducing maintenance. Moreover, fuel metering is accurately controlled without substantial carboning flow losses.
    Type: Grant
    Filed: July 19, 1990
    Date of Patent: August 20, 1991
    Assignee: Cummins Engine Company, Inc.
    Inventors: George L. Muntean, Gary L. Gant, C. Edward Morris, Jr., David Bolis, Kevin L. Vogt, David E. Shultz
  • Patent number: 4813600
    Abstract: An improved, simplified pressure/time dependent fuel injector assembly for injecting fuel intermittently into a combustion chamber of an internal combustion engine. The injector assembly includes a unitary or single-piece injector body which has at least one groove-like channel on the exterior surface thereof. The channel is closed and sealed by a sleeve which is press-fit about that portion of the injector body on which the channel lies. For reciprocation within the injector body, there is provided an injector-plunger assembly which includes a top stop mechanism for adjustably setting the distance traveled by the plunger assembly during the reciprocatory movement thereof.
    Type: Grant
    Filed: October 16, 1987
    Date of Patent: March 21, 1989
    Assignee: Cummins Engine Company, Inc.
    Inventors: David E. Shultz, George L. Muntean, Kevin L. Vogt