Patents by Inventor Richard J. Gustafson

Richard J. Gustafson 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: 20160025018
    Abstract: An internal combustion engine with a braking system comprising a rocker lever, a rocker lever valve and a biasing member selectively preventing contact between a brake lift portion of a cam and a cam follower supported by the rocker lever. Fluid pressures in a first fluid circuit and a second fluid circuit selectively actuate the rocker lever valve to open an exhaust valve and cause brake events.
    Type: Application
    Filed: March 17, 2014
    Publication date: January 28, 2016
    Inventors: Richard J. Gustafson, Bradford L. Lynch
  • Patent number: 8375904
    Abstract: An early intake valve closing (EIVC) and variable valve timing (VVT) assembly and method are provided for an internal combustion engine. The method includes operating an intake valve to open and close an intake port and allow intake gas to enter a cylinder of the internal combustion engine containing a piston, where the timing of the closing of the intake valve occurs at or before bottom dead center (BDC) of the compression stroke of the piston. The method further includes selectively extending duration of the opening of the intake port by an amount that delays closing timing of the intake valve until after BDC of the piston compression stroke. An assembly for EIVC and VVT includes a cylinder head including an intake valve and intake port and a rotatably mounted camshaft including an intake lobe operatively connected to the intake valve to periodically move the valve into the first and second positions.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: February 19, 2013
    Assignee: Cummins Intellectual Property, Inc.
    Inventor: Richard J. Gustafson
  • Patent number: 8103427
    Abstract: A method is disclosed for adjusting a target EGR mass flow in response to a current charge flow and target EGR fraction. The method includes interpreting an air-fuel ratio and a target air-fuel ratio. The method further includes interpreting a charge flow and a target EGR fraction. The method further includes determining an adjusted target EGR mass flow based on the air-fuel ratio, the target air-fuel ratio, the charge flow, and the target EGR fraction. The method further includes controlling an actuator based on the adjusted target EGR mass flow.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: January 24, 2012
    Assignee: Cummins Inc.
    Inventors: Andrew W. Osburn, Mert Geveci, Richard J. Gustafson, Erik L. Piper
  • Publication number: 20110197834
    Abstract: An early intake valve closing (EIVC) and variable valve timing (VVT) assembly and method are provided for an internal combustion engine. The method includes operating an intake valve to open and close an intake port and allow intake gas to enter a cylinder of the internal combustion engine containing a piston, where the timing of the closing of the intake valve occurs at or before bottom dead center (BDC) of the compression stroke of the piston. The method further includes selectively extending duration of the opening of the intake port by an amount that delays closing timing of the intake valve until after BDC of the piston compression stroke. An assembly for EIVC and VVT includes a cylinder head including an intake valve and intake port and a rotatably mounted camshaft including an intake lobe operatively connected to the intake valve to periodically move the valve into the first and second positions.
    Type: Application
    Filed: February 18, 2010
    Publication date: August 18, 2011
    Applicant: CUMMINS INTELLECTUAL PROPERTIES, INC.
    Inventor: Richard J. Gustafson
  • Publication number: 20110077838
    Abstract: A method is disclosed for adjusting a target EGR mass flow in response to a current charge flow and target EGR fraction. The method includes interpreting an air-fuel ratio and a target air-fuel ratio. The method further includes interpreting a charge flow and a target EGR fraction. The method further includes determining an adjusted target EGR mass flow based on the air-fuel ratio, the target air-fuel ratio, the charge flow, and the target EGR fraction. The method further includes controlling an actuator based on the adjusted target EGR mass flow.
    Type: Application
    Filed: September 25, 2009
    Publication date: March 31, 2011
    Inventors: Andrew W. Osburn, Mert Geveci, Richard J. Gustafson, Erik L. Piper
  • Patent number: 7254948
    Abstract: An apparatus and method for controlling exhaust gas recirculation flow. The apparatus and method uses a pressure-bleeding device, such as a wastegate valve, to change the pressure in an internal combustion engine in order to alter the flow rate of the exhaust gas through an exhaust gas recirculation conduit. In one form, the invention includes an inlet conduit connected to an intake manifold of an internal combustion engine and an exhaust conduit connected to exhaust manifold of an internal combustion engine. The pressure-bleeding device is operatively coupled to the intake conduit. Altering the pressure in the intake conduit changes the pressure across the entire system. This change in pressure in the entire system results in a change in pressure across the exhaust gas recirculation conduit. Therefore, a flow is created through the exhaust gas recirculation conduit and can be controlled using the intake side pressure bleeding device.
    Type: Grant
    Filed: February 21, 2005
    Date of Patent: August 14, 2007
    Assignee: Cummins Inc.
    Inventors: Richard J. Gustafson, John M. Mulloy, Thomas McKinley
  • Patent number: 6253730
    Abstract: An engine compression braking system having an integral rocker lever and reset valve utilizes a single rocker lever to operate an engine in both normal power and braking modes while effectively closing an exhaust valve to define a braking mode exhaust valve opening event prior to a primary opening event. The system includes a reset valve mounted on the rocker arm a spaced distance from an actuator piston to relieve fluid pressure from a high pressure circuit after an initial opening of the exhaust valve. A reset contact element is mounted on a stationary engine component for engagement by the reset valve during movement of the rocker lever to cause opening of the reset valve and relief of the pressure. In one embodiment, a bias chamber and bias chamber supply circuit are provided to permit low pressure braking fluid to be continuously supplied to an actuator supply circuit.
    Type: Grant
    Filed: January 14, 2000
    Date of Patent: July 3, 2001
    Assignee: Cummins Engine Company, Inc.
    Inventor: Richard J. Gustafson
  • Patent number: 5666913
    Abstract: A cam follower lever assembly is provided which permits variable control of the timing of the beginning of operation of an engine component, i.e. fuel injector or engine valve. The cam follower lever includes a timing control lever and a force transmitting lever mounted for pivotal movement on a common pivot shaft. The timing control lever is also mounted for nonpivotal movement, relative to the pivot shaft, by a hydraulic actuation device permitting selective nonpivotal movement of the timing control lever relative to a cam's outer surface so as to selectively advance or retard the timing of, for example, fuel injection. The actuation device includes actuator cavities formed in the levers and a control valve arrangement. In one embodiment, a control valve is mounted in a cavity formed in the timing control lever.
    Type: Grant
    Filed: May 29, 1996
    Date of Patent: September 16, 1997
    Assignee: Cummins Engine Company, Inc.
    Inventors: Richard J. Gustafson, Corydon E. Morris
  • Patent number: 5479886
    Abstract: An engine oil capacitor which allows a larger volume of oil to be used in an internal combustion engine without reducing fuel economy or increasing engine package size. Oil flow through the normal oil drainback holes is partially restricted, resulting in a substantial quantity of oil being temporarily stored in an engine compartment, such as the camshaft compartment, during engine operation.
    Type: Grant
    Filed: May 12, 1995
    Date of Patent: January 2, 1996
    Assignee: Cummins Engine
    Inventors: Jay F. Leonard, Richard J. Gustafson, Mark B. Hinderleider
  • Patent number: 5094215
    Abstract: A unit fuel injector adapted to receive fuel from a fuel supply at relatively low pressure and adapted to inject fuel at relatively high pressure into the combustion chamber of an internal combustion engine is provided, comprising an injector body having a first internal bore and an injector orifice and a plunger mounted for reciprocating movement within the first internal bore to define a variable volume fuel pressurization chamber including a cam actuated upper plunger portion and a lower plunger portion mounted in the first internal bore between the variable volume fuel pressurization chamber and the upper plunger portion. While the upper plunger portion is in its retracted position, low pressure fuel from the fuel supply is supplied to the variable volume fuel pressurization chamber.
    Type: Grant
    Filed: October 3, 1990
    Date of Patent: March 10, 1992
    Assignee: Cummins Engine Company, Inc.
    Inventor: Richard J. Gustafson
  • Patent number: 4872427
    Abstract: The present invention is directed to a system for actuating a cam follower shaft to permit variable timing of the valving events or the unit injectors of an internal combustion engine. A rotatable cam follower shaft is subjected to continuous, alternating, oscillating torques. A clutch is disposed adjacent the shaft and is translatable to move from a disengaged position to an engaged position in which the clutch engages the shaft either directly or through roller bearings and separate inclined surfaces. When the clutch engages the shaft, it prevents rotation in a first direction while permitting rotation in a second direction until a positive stop is reached. When the clutch is disengaged from the shaft, the overall torques acting on the shaft rotate the shaft in the first direction until the shaft reaches another positive stop. The clutch is activated by a compression spring which is resisted by fluid pressures.
    Type: Grant
    Filed: November 29, 1988
    Date of Patent: October 10, 1989
    Assignee: Cummins Engine Company, Inc.
    Inventor: Richard J. Gustafson
  • Patent number: RE37241
    Abstract: A unit fuel injector adapted to receive fuel from a fuel supply at relatively low pressure and adapted to inject fuel at relatively high pressure into the combustion chamber of an internal combustion engine is provided, comprising an injector body having a first internal bore and an injector orifice and a plunger mounted for reciprocating movement within the first internal bore to define a variable volume fuel pressurization chamber including a cam actuated upper plunger portion and a lower plunger portion mounted in the first internal bore between the variable volume fuel pressurization chamber and the upper plunger portion. While the upper plunger portion is in its retracted position, low pressure fuel from the fuel supply is supplied to the variable volume fuel pressurization chamber.
    Type: Grant
    Filed: February 18, 2000
    Date of Patent: June 26, 2001
    Assignee: Cummins Engine Company, Inc.
    Inventor: Richard J. Gustafson
  • Patent number: D813124
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: March 20, 2018
    Assignee: Cummins Inc.
    Inventors: Richard J. Gustafson, Robert C. Ahrmann, Michael Lee Stark, II, Alan R. Bennett
  • Patent number: D828249
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: September 11, 2018
    Assignee: Cummins Inc.
    Inventors: Richard J. Gustafson, Robert C. Ahrmann, Michael Lee Stark, II, Alan R. Bennett
  • Patent number: D828250
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: September 11, 2018
    Assignee: Cummins Inc.
    Inventors: Richard J. Gustafson, Robert C. Ahrmann, Michael Lee Stark, II, Alan R. Bennett
  • Patent number: D836505
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: December 25, 2018
    Assignee: Cummins Inc.
    Inventors: Richard J. Gustafson, Robert C. Ahrmann, Michael Lee Stark, II, Alan R. Bennett