Richard P Gustafson

US Patent:

7254948, Aug 14, 2007

Filed:

Feb 21, 2005

Appl. No.:

11/062029

Inventors:

Richard J. Gustafson - Columbus IN, US
John M. Mulloy - Columbus IN, US
Thomas McKinley - Columbus IN, US

Assignee:

Cummins Inc. - Columbus IN

International Classification:

F02B 33/44
F02M 25/07
F02M 25/06
F04D 27/02
F04D 27/00
F04D 15/00

US Classification:

60611, 606052, 12356812, 12356821, 415 1, 415 17

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.

US Patent:

7685993, Mar 30, 2010

Filed:

Mar 31, 2008

Appl. No.:

12/059944

Inventors:

Richard Gustafson - Columbus IN, US

Assignee:

Cummins Inc. - Indianapolis IN

International Classification:

F02B 31/00

US Classification:

123308, 123306, 123 9015, 123 9016

Abstract:

Variable swirl for internal combustion engines. In one aspect, an apparatus includes a first intake valve controlling air flow from a first intake port to a piston cylinder of the internal combustion engine, where the first intake valve has a first lift profile. A second intake valve controls air flow from a second intake port to the piston cylinder, where the second intake valve has a second lift profile different than the first lift profile. The combination of first and second lift profiles causes a variable swirl of air in the cylinder as a function of engine speed.

US Patent:

8267043, Sep 18, 2012

Filed:

Dec 8, 2009

Appl. No.:

12/632881

Inventors:

Richard P. Gustafson - Fairland IN, US

International Classification:

A01K 29/00

US Classification:

119 285

Abstract:

A canine cooling assembly includes a base that has a top side, a bottom side and a peripheral edge. A housing is attached to and covers the top side of the base. The housing includes a bottom wall, a top wall and a perimeter wall that is attached to and extends between the top and bottom walls. The top wall has a plurality of apertures extending therethrough. A blower is in fluid communication with the housing and injects air into the housing to force air outwardly through the apertures. An animal is positionable on the housing to be cooled by air ejected from the apertures.

US Patent:

8375904, Feb 19, 2013

Filed:

Feb 18, 2010

Appl. No.:

12/708276

Inventors:

Richard J. Gustafson - Columbus IN, US

Assignee:

Cummins Intellectual Property, Inc. - Minneapolis MN

International Classification:

F01L 1/34

US Classification:

123 9015, 123 9016, 123 9017, 123348

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. The intake lobe is shaped such that the timing of the closing position occurs at or before BDC of a compression stroke of the piston. The assembly further includes a selectively activatable VVT assembly having an actuator that operatively engages the intake valve before the intake valve reaches the closed position to extend duration of the intake valve opening until after BDC of the piston compression stroke.

US Patent:

48724270, Oct 10, 1989

Filed:

Nov 29, 1988

Appl. No.:

7/277644

Inventors:

Richard J. Gustafson - Columbus IN

Assignee:

Cummins Engine Company, Inc. - Columbus IN

International Classification:

F01L 134
F02M 3704

US Classification:

123 9016

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.

US Patent:

54798868, Jan 2, 1996

Filed:

May 12, 1995

Appl. No.:

8/440060

Inventors:

Jay F. Leonard - Columbus IN
Richard J. Gustafson - Columbus IN
Mark B. Hinderleider - Jamestown NY

Assignee:

Cummins Engine - Columbus IN

International Classification:

F01M 100

US Classification:

123196R

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.

US Patent:

RE372412, Jun 26, 2001

Filed:

Feb 18, 2000

Appl. No.:

9/507372

Inventors:

Richard J. Gustafson - Columbus IN

Assignee:

Cummins Engine Company, Inc. - Columbus IN

International Classification:

F02M 3704
F02M 5920

US Classification:

123500

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. A spring is positioned within the first internal bore to bias the upper and lower plunger portions apart to thereby allow for variation of the volume of fuel which flows into the variable volume fuel pressurization chamber during each cycle of injection operation in dependence on the pressure of the fuel from the fuel supply. A valve assembly including a valve element mounted for reciprocating movement within a second internal bore controls the flow of fuel from the variable volume fuel pressurization chamber to the injector orifice.

US Patent:

56669135, Sep 16, 1997

Filed:

May 29, 1996

Appl. No.:

8/654930

Inventors:

Richard J. Gustafson - Columbus IN
Corydon E. Morris - Columbus IN

Assignee:

Cummins Engine Company, Inc. - Columbus IN

International Classification:

F01L 134

US Classification:

123 9016

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.