David Michael Rix

US Patent:

6824081, Nov 30, 2004

Filed:

Jun 28, 2002

Appl. No.:

10/183566

Inventors:

Lester L. Peters - Columbus IN
C. Edward Morris - Columbus IN
David M. Rix - Columbus IN
Shankar C. Venkataraman - Columbus IN

Assignee:

Cummins Inc. - Columbus IN

International Classification:

F02M 5900

US Classification:

2395332, 2395333, 2395338, 239 88, 2395851, 2395855

Abstract:

An improved fuel injector is provided which effectively controls fuel injection events using two injection control valves which operate in series to control the movement of a nozzle valve element. An outer injection control valve and actuator assembly operates to control fluid pressure in a control volume adjacent an inner injection control valve thereby controlling the movement of the inner control valve which, in turn, controls fuel pressure in an inner control volume adjacent one end of the nozzle valve element. A particular design of the inner injection control valve prevents control valve oscillations thereby minimizing unwanted fuel injection variations.

US Patent:

7156368, Jan 2, 2007

Filed:

Apr 14, 2004

Appl. No.:

10/823692

Inventors:

Michael A. Lucas - Morgantown IN, US
David L. Buchanan - Westport IN, US
David M. Rix - Columbus IN, US
Donald J. Benson - Columbus IN, US

Assignee:

Cummins Inc. - Columbus IN

International Classification:

F02M 47/02

US Classification:

25112919, 25112918

Abstract:

A flow control valve for controlling the flow of fuel in a fuel system including a housing with a fuel passage, a valve device movable to close the fuel passage to block fuel flow through the fuel passage, and to open the fuel passage to permit fuel flow through the fuel passage, a valve plunger engaging the valve device, an actuator for reciprocally moving the valve plunger, an armature overtravel feature for permitting continued movement of the armature relative to the valve plunger from an engaged position into a disengaged position when the valve plunger reaches the extended position, and an armature stop for stopping overtravel of the armature.

US Patent:

7248041, Jul 24, 2007

Filed:

Jul 28, 2003

Appl. No.:

10/628606

Inventors:

Edward B. Manring - Columbus IN, US
David M. Rix - Columbus IN, US
Donald J. Benson - Columbus IN, US

Assignee:

Cummins, Inc. - Columbus IN

International Classification:

G01N 27/72
G01R 33/12

US Classification:

324228, 324234

Abstract:

A device for evaluating magnetic component performance and methods of evaluating transient magnetic performance of such components are disclosed. Magnetic flux capacity and/or energy loss of a magnetic component is/are measured, and the measurement data is electronically processed to evaluate the magnetic performance of the component.

US Patent:

7334741, Feb 26, 2008

Filed:

Jan 28, 2005

Appl. No.:

11/044724

Inventors:

Donald J. Benson - Columbus IN, US
David M. Rix - Columbus OH, US
Lester L. Peters - Columbus IN, US
Shankar C. Venkataraman - Columbus IN, US

Assignee:

Cummins Inc. - Columbus IN

International Classification:

F02D 1/06

US Classification:

239 5, 239 96, 239124, 2395334, 2395335, 2395851, 123496

Abstract:

A closed nozzle fuel injector is provided which effectively controls the fuel injection flow rate, especially during an initial portion of an injection event, while also permitting accurate control over pilot and/or post injection flow rates at all operating conditions thereby advantageously reducing emissions and combustion noise. The injector includes a rate shaping orifice to restrict fuel flow during an initial portion of an injection event and a rate shaping sleeve mounted for movement to cause a greater flow of injection fuel during a later portion of the injection event. A damping chamber and orifice are also provided to control movement of the rate shaping sleeve.

US Patent:

20060138374, Jun 29, 2006

Filed:

Dec 15, 2005

Appl. No.:

11/304869

Inventors:

Michael Lucas - Columbus IN, US
David Rix - Columbus IN, US
David Buchanan - Westport IN, US
Gary Vanderlind - Columbus IN, US

International Classification:

F16K 31/02

US Classification:

251129160

Abstract:

A valve actuator assembly is disclosed. The assembly comprises a stator; an armature housing; and an adjustable spacer coupled between the stator and the armature housing, wherein the spacer yields at a controlled rate when an axial load is applied thereto. The adjustable spacer is positioned between the stator and the armature housing such that when an axial load is applied, the adjustable spacer compresses at a controlled rate, thereby allowing adjustment of the valve stroke. A system and method in accordance with the present invention is applicable to any valve which includes a housing containing a seat, an armature, a stator, and a mechanism that is capable of applying a load to the housing.

US Patent:

20090267008, Oct 29, 2009

Filed:

Sep 14, 2007

Appl. No.:

11/855333

Inventors:

Michael A. LUCAS - Morgantown IN, US
Martin W. Long - Columbus IN, US
Donald J. Benson - Columbus IN, US
Gary A. Garitson - Columbus IN, US
Steven E. Ferdon - Columbus IN, US
David M. Rix - Columbus IN, US
Rodney A. Ewing - Columbus IN, US
Terry L. Underwood - Seymour IN, US

Assignee:

CUMMINS INTELLECTUAL PROPERTIES, INC. - Columbus IN

International Classification:

F16K 31/06
H02K 15/02
H02K 33/02

US Classification:

25112915, 29596, 310 30

Abstract:

An electromagnetic valve includes an extra-high pressure injection system control valve having soft metal powder particles in a magnetic stator core. Electroless nickel plating is applied to the stator core to provide an intermediate surface to absorb grinding wheel stress as a working face is exposed during manufacturing, as well as an external compression layer or casing to hold or encapsulate the powder particles in place and together during assembly and use.

US Patent:

20130119166, May 16, 2013

Filed:

Nov 1, 2012

Appl. No.:

13/666833

Inventors:

Cummins Inc. - Columbus IN, US
David M. RIX - Columbus IN, US

Assignee:

CUMMINS INC. - Columbus IN

International Classification:

F02M 61/16

US Classification:

239580, 239584, 2395851

Abstract:

A fuel injector including an injection control device valve spring preload adjustment device is disclosed. The fuel injector includes a transverse access passage extending at an acute angle to a longitudinal axis of the fuel injector. The preload adjustment device includes at least one transverse slot that creates a cantilevered thread portion. The cantilevered thread portion is deformed at a deformation angle to a plane perpendicular to the longitudinal axis to form a locking feature.

US Patent:

58993835, May 4, 1999

Filed:

Feb 20, 1997

Appl. No.:

8/803511

Inventors:

Dan K. Hickey - Greenwood IN
J. Victor Perr - Greenwood IN
David M. Rix - Columbus IN
Joseph C. Bentz - Columbus IN
Thomas M. Yonushonis - Columbus IN
Malcolm G. Naylor - Jonesville IN
Katsuhiro Shinosawa - Tokyo, JP
John T. Carroll - Columbus IN

Assignee:

Cummins Engine Company, Inc. - Columbus IN

International Classification:

F02M 5500

US Classification:

239 88

Abstract:

A wear and scuff-resistant timing plunger for a timing assembly in a unit fuel injector for an internal combustion engine is provided. The timing plunger is formed of a high thermal expansion ceramic with a thermal expansion coefficient greater than 6. times. 10. sup. -6 /. degree. C. and a hardness greater than 800 Kg/mm. sup. 2, which maintains a desired diametral clearance and efficient plunger function without scuffing or sticking under the axial, tangential and pressure loads encountered in the fuel injector operating environment. Preferred high thermal expansion ceramics are zirconia, alumina-zirconia and alumina.