Matthew G Mickiewicz

US Patent:

6453873, Sep 24, 2002

Filed:

Nov 2, 2000

Appl. No.:

09/705074

Inventors:

Steven J. Funke - Princeville IL
Scott A. Leman - Eureka IL
Joshua C. Ruedin - Peoria IL
Matthew G. Mickiewicz - Clayton NC
Sameer Bhargava - Canton MI

Assignee:

Caterpillar Inc - Peoria IL

International Classification:

F02D 1304

US Classification:

123322, 477185

Abstract:

A system and method for controlling combustion engine compression braking having the variable timing of the dwell period of at least one exhaust valve by an electronic control module within each one of the engine cylinders during a braking event as well as the variable timing of the commencement or onset of the braking event. The system and method thus facilitate the proper performance of the braking event as a function of engine speed and prevents interference or physical impact with the cam driving elements used for achieving the normal or regular exhaust valve event.

US Patent:

6601563, Aug 5, 2003

Filed:

Dec 20, 2001

Appl. No.:

10/028848

Inventors:

Steven J. Funke - Princeville IL
Scott A. Leman - Eureka IL
Matthew G. Mickiewicz - Clayton NC
Joshua C. Ruedin - Peoria IL

Assignee:

Caterpillar Inc - Peoria IL

International Classification:

F02D 1304

US Classification:

123321, 12356814

Abstract:

Exhaust gas re-circulation is achieved internally in an internal combustion engine having intake and exhaust valves actuated by a camshaft. A controller monitors at least one engine parameter and automatically actuates an electrically actuated fluid operated brake actuator at a predetermined timing of movement of an engine piston to cause the actuator to maintain the exhaust valve at an intermediate position between a full open position and a closed position of the exhaust valve and cause exhaust gasses to be delivered from the exhaust manifold to the combustion chamber of the engine.

US Patent:

6971366, Dec 6, 2005

Filed:

Nov 30, 2001

Appl. No.:

09/939952

Inventors:

Steven J. Funke - Princeville IL, US
Michael P. Harmon - Dunlap IL, US
Scott A. Leman - Eureka IL, US
Matthew G. Mickiewicz - Clayton NC, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

F02D013/04

US Classification:

123321, 123 9016, 123320, 123322

Abstract:

Engine compression release brakes include some degree of lash between the brake actuation portion and the engine exhaust valve portion. The disclosed apparatus and method provides an integral lash adjuster that includes an adjusting screw that is threadably received by a slidable plunger. Rotation of the adjusting screw causes the plunger to slide relative to a plunger cavity and responsively modify the amount of lash.

US Patent:

62059750, Mar 27, 2001

Filed:

Dec 16, 1999

Appl. No.:

9/464835

Inventors:

Joshua C. Ruedin - Peoria IL
Steven J. Funke - Princeville IL
Scott A. Leman - Eureka IL
Matthew G. Mickiewicz - Clayton NC

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

F02D13/04

US Classification:

123322

Abstract:

The present invention provides a method and apparatus for controlling an actuation of a compression brake associated with a combustion engine. The engine includes a fluid circuit for delivering a fluid to the compression brake. The engine also includes a cylinder having an associated exhaust valve. The method includes the steps of establishing a desired timing of an actuation of the brake, determining an air pressure of the engine, and determining a desired fluid pressure in response to the timing and the air pressure.

US Patent:

20230059905, Feb 23, 2023

Filed:

Aug 17, 2021

Appl. No.:

17/404202

Inventors:

- Peoria IL, US
Paul R English - Washington IL, US
Matthew Mickiewicz - Peoria IL, US

International Classification:

F04C 14/24
F04C 2/18

Abstract:

A pump and purge valve configuration may include an inlet, an outlet arranged downstream of the inlet and defining a portion of an operational fluid pathway, and a pump mechanism arranged along the operational fluid pathway between the inlet and the outlet. The pump and purge valve configuration may also include a purging fluid pathway having a purge inlet in fluid communication with the operational fluid pathway at a point downstream of the pump. The purging fluid pathway may extend from the purge inlet to a relief point. The pump and purge valve configuration may also include a purge valve arranged along the purging fluid pathway. The purge valve may be configured to remain open unless a triggering fluid pressure develops in the pump mechanism.