Stephan D Roozenboom

7185616, Mar 6, 2007

Sep 10, 2003

10/659536

Stephan D Roozenboom - Washington IL, US

Caterpillar Inc - Peoria IL

F02B 75/04

123 48B, 123 78 F

An internal combustion engine has a cylinder block defining a cylinder. A piston is disposed in the cylinder. The internal combustion engine has a connecting rod connected to the piston and a crankshaft connected to the connecting rod. The internal combustion engine has a vcr mechanism connected to the crankshaft. A first gear is connected to the crankshaft, and a second gear is in mesh with the first gear. The second gear is connected to the vcr mechanism. The internal combustion engine has a third gear in mesh with the second gear. The third gear has a fixed center of rotation.

7370613, May 13, 2008

Nov 30, 2004

10/998895

Keith Edward Lawrence - Kobe, JP
William Elliott Moser - Peoria IL, US
Stephan Donald Roozenboom - Washington IL, US
Kevin Jay Knox - Peoria IL, US

Caterpillar Inc. - Peoria IL

F02B 75/04

123 48B

A variable compression ratio mechanism for an internal combustion engine that has an engine block and a crankshaft is disclosed. The variable compression ratio mechanism has a plurality of eccentric disks configured to support the crankshaft. Each of the plurality of eccentric disks has at least one cylindrical portion annularly surrounded by the engine block. The variable compression ratio mechanism also has at least one actuator configured to rotate the plurality of eccentric disks.

7490462, Feb 17, 2009

Feb 21, 2006

11/357160

Stephan Donald Roozenboom - Washington IL, US
Andrew John Kieser - Morton IL, US

Caterpillar Inc. - Peoria IL

F02M 25/06

60278, 60274, 60280, 60286, 60295, 606052, 60612, 123562

An exhaust recirculation system includes a power source including at least one cylinder outputting exhaust gas and a particulate reducing device fluidly connected to at least one exhaust duct of the power source. The particulate reducing device is configured to reduce an amount of particulates in the exhaust gas. The exhaust recirculation system also includes a recirculation compressor configured to receive and compress at least a portion of the exhaust gas. An intake duct of the at least one cylinder of the power source is fluidly connected to the recirculation compressor to receive the compressed reduced-particulate exhaust gas.

7591131, Sep 22, 2009

Nov 30, 2006

11/606332

David Michael Milam - Dunlap IL, US
Stephan Donald Roozenboom - Washington IL, US
Michael Steven Bond - Chillicothe IL, US
Amir Kapic - Dunlap IL, US

Caterpillar Inc. - Peoria IL

F02M 25/06

60278, 60274, 60280, 60285, 60295, 60297, 60301, 606051, 606052

An exhaust treatment system for an engine is disclosed and may have an air induction circuit, an exhaust circuit, and an exhaust recirculation circuit. The air induction circuit may be configured to direct air into the engine. The exhaust circuit may be configured to direct exhaust from the engine and include a turbine driven by the exhaust, a particulate filter disposed in series with and downstream of the turbine, and a catalytic device disposed in series with and downstream of the particulate filter. The exhaust recirculation circuit may be configured to selectively redirect at least some of the exhaust from between the particulate filter and the catalytic device to the air induction circuit. The catalytic device is selected to create backpressure within the exhaust circuit sufficient to ensure that, under normal engine operating conditions above low idle, exhaust can flow into the air induction circuit without throttling of the air.

7788070, Aug 31, 2010

Jul 30, 2007

11/882015

Anthony J. Grichnik - Peoria IL, US
Amar Patel - Dunlap IL, US
Michael Seskin - Cardiff CA, US
Stephan D. Roozenboom - Washington IL, US
David M. Milam - Dunlap IL, US

Caterpillar Inc. - Peoria IL

G06F 17/50

703 1

A method is provided for developing a product. The method includes obtaining data records from a plurality of stages of development of the product; identifying respective objectives of the plurality of stages and corresponding objective factors of the objectives; and determining common variables associated with the objectives based on the objective factors. The method includes selecting one or more input parameters based on the common variables and one or more output parameters based on the objectives; and updating the data records to generate desired data records indicative characteristics of the one or more input parameters and the one or more output parameters. The method includes generating a computational model indicative of interrelationships between the one or more input parameters and the one or more output parameters based on the data records; and providing a set of constraints to the computational model representative of a design of the product.

7797937, Sep 21, 2010

Jun 29, 2007

11/819877

Dennis Lee Endicott - Hanna City IL, US
David Richard Wisley - Peoria IL, US
James Richard Weber - Lacon IL, US
Ben Evans - Peoria IL, US
Stephan D. Roozenboom - Washington IL, US
Michael Patrick Harmon - Dunlap IL, US
Isaac Ethan Fox - East Peoria IL, US
James Dean Dunbar - Washington IL, US

Caterpillar Inc - Peoria IL

F02B 33/44
F02B 31/00
F02M 25/07
F02M 29/00
F01N 3/10
F01N 3/02
B01D 47/06

606051, 606052, 60307, 60309, 123306, 12356812, 12356818, 123590, 261 781

A condensation dispersion device for use with a power source having an exhaust recirculation system is disclosed. The condensation dispersion device may have a housing with an inlet configured to receive exhaust, and an outlet configured to discharge exhaust. The condensation dispersion device may also have a first static mixing device disposed within the housing and being configured to redirect condensate from an internal wall of the housing into the exhaust.

7984608, Jul 26, 2011

Jan 31, 2006

11/342630

Stephan Donald Roozenboom - Washington IL, US

Caterpillar Inc. - Peoria IL

F01N 3/00

60285, 60274, 60288, 60292, 60295, 60297, 60324

A method of directing flow of exhaust gas includes directing a first portion of the flow through a first flow path and directing a second portion of the flow through a second flow path. A temperature of at least a portion of the flow in the first flow path is increased, and the flow in the first flow path is sent through a filter. The first and second portions of the flow downstream of the filter to are combined form a combined flow. The combined flow is maintained within a predetermined range of temperatures, and the combined flow is directed to a catalyst.

8196403, Jun 12, 2012

Jul 31, 2008

12/222009

Craig Phillip Hittle - Peoria IL, US
Jonathan P. Kilkenny - Peoria IL, US
David Andrew Pierpont - Dunlap IL, US
Stephan Donald Roozenboom - Washington IL, US

Caterpillar Inc. - Peoria IL

F02D 23/00
F16K 1/16

60602

A turbocharger for a use with a combustion engine is provided. The turbocharger may have a turbine housing with a first volute, a second volute, and a common outlet. The turbocharger may also have a turbine wheel disposed between the common outlet and the first and second volutes. The turbocharger may further have a first valve configured to selectively fluidly communicate the first volute with the second volute upstream of the turbine wheel, a second valve configured to selectively fluidly communicate the second volute with the common outlet to bypass the turbine wheel, and a common actuator configured to move the first and second valves.