John J Zagone from 1712 Dixie Hwy, Crete, IL 60417, age 41

Resumes

John Zagone

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Us Patents

Turbocharger Thermal Isolation Connection
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US Patent:

6354815, Mar 12, 2002
Filed:

May 10, 2000
Appl. No.:

09/567882
Inventors:

Gary R Svihla - Clarendon Hills IL
Charles Henry Mc Creary - Oak Park IL
John R. Zagone - Westmont IL
Assignee:

General Motors Corporation - Detroit MI
International Classification:

F04B 1700
US Classification:

417407
Abstract:

An engine turbocharger includes a thermal isolation connection between a rotor and compressor section support and an exhaust section including an exhaust duct attached to the rotor support. The connection includes spring biased wear pads allowing sliding motion at one or more interfaces between the exhaust duct and the rotor support to accommodate relative radial thermal growth. Radial key and slot guides between the exhaust duct and rotor support maintain axial alignment of the connected components during relative radial motion at the connecting interfaces.

Turbocharger Rotor With Alignment Couplings
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US Patent:

6364634, Apr 2, 2002
Filed:

Sep 29, 2000
Appl. No.:

09/676581
Inventors:

Gary R. Svihla - Chicago IL
John R. Zagone - Westmont IL
James William Heilenbach - Riverside IL
Keith E. Moravec - Downers Grove IL
Assignee:

General Motors Corporation - Detroit MI
International Classification:

F04B 3500
US Classification:

417409
Abstract:

A turbocharger rotor includes a turbine wheel, a compressor wheel, a shaft extending between the turbine and compressor wheels for rotation together about an axis, and connecting means. The connecting means include first and second joints including alignment couplings joining opposite ends of the shaft with adjoining inner ends of the compressor wheel and the turbine wheel. The couplings are configured to coaxially align and drivingly engage the shaft with the compressor and turbine wheels. A fastener rod extends through the shaft and the compressor wheel, engaging the turbine wheel to retain the rotor components together under compressive load. The rod is resiliently stretchable to limit changes in the retaining force changes in axial dimensions during operating and stationary conditions. Additional features and variations are disclosed.

Conically Jointed Turbocharger Rotor
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US Patent:

6499969, Dec 31, 2002
Filed:

May 10, 2000
Appl. No.:

09/567878
Inventors:

Michael Dean Tombers - Lockport IL
John R. Zagone - Westmont IL
James William Heilenbach - Riverside IL
Assignee:

General Motors Corporation - Detroit MI
International Classification:

F04B 1700
US Classification:

417407, 416244 A, 416244 R, 416204 A
Abstract:

A turbocharger rotor includes a turbine wheel, a compressor wheel, a shaft extending between the turbine and compressor wheels for rotation together about an axis, and connecting means including two pairs of non-locking cones. In a preferred embodiment, the cones include external cones on the turbine and compressor wheels and internal cones on the ends of the shaft. The non-locking cones are centered on the axis with the external and internal cones drivingly engaging one another to align and connect the wheels with the shaft. A long bolt fastener extends through the compressor wheel and the shaft to engage the turbine wheel and hold the rotor components in assembly. An alternative embodiment includes engaging radial surfaces outward of the cones. The radial surfaces share the transmission of torque through the connecting means and assist in stabilizing the joints between the shaft and the connected wheels. Additional features are disclosed.

Method For Engine Condition Control With Turbocompressor Controllable Bypass
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US Patent:

6912852, Jul 5, 2005
Filed:

Jan 22, 2004
Appl. No.:

10/762590
Inventors:

Paul Gottemoller - Palos Park IL, US
Ramesh B. Poola - Naperville IL, US
David Corba - Des Plaines IL, US
John R. Zagone - Westmont IL, US
Assignee:

Electro-Motive Diesel, Inc. - LaGrange IL
International Classification:

F02B033/44
F02B037/20
US Classification:

60606, 60611
Abstract:

A system for a turbocharged internal combustion engine includes an engine having a charge inlet connected to the compressor outlet and an exhaust outlet connected to the turbine inlet for driving the turbocharger with hot exhaust gas and supplying compressed air to the engine for combustion. A bypass duct connects the compressor outlet to the turbine inlet for diverting a portion of the compressed air around the engine to the turbine inlet or exhaust. A control device selectively controls the diversion of air. An operating method for the system involves controlling peak cylinder firing pressure and/or maximum turbine inlet temperature, optionally with exhaust NOx and smoke in order to limit these variables to acceptable limits with a minimum of operational limitations.

Diesel Engine Water Pump With Thrust Bearing Preload
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US Patent:

6918746, Jul 19, 2005
Filed:

Apr 25, 2003
Appl. No.:

10/423313
Inventors:

Werner C. Duerr - Westchester IL, US
John R. Zagone - Westmont IL, US
Thomas J. Kane - Naperville IL, US
Randal K. Albright - Montgomery IL, US
Assignee:

Electro-Motive Diesel, Inc. - LaGrange IL
International Classification:

F01D001/02
US Classification:

415206, 415229
Abstract:

An improved diesel engine water pump includes three main features that aid in extending the maintenance free life of the pump. The impeller shaft is carried by tapered roller shaft support bearings of which the impeller bearing has a floating outer race that is urged axially by a preload spring to provide a prescribed axial preload that maintains concentricity of the shaft with the axis and prolongs bearing life. An improved oil seal combines an oil slinger, a stationary deflector and a lip oil seal with a return passage to the engine to more effectively limit oil leakage from the pump. An improved water seal includes pressurized water jets fed from the pump volute that flush wear particles from the water seal surface and increase water seal life. Further details of these features are also disclosed.

Diesel Engine Water Pump With Improved Oil Control
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US Patent:

6929449, Aug 16, 2005
Filed:

Apr 25, 2003
Appl. No.:

10/423361
Inventors:

John R. Zagone - Westmont IL, US
Werner C. Duerr - Westchester IL, US
Thomas J. Kane - Naperville IL, US
Randal K. Albright - Montgomery IL, US
Assignee:

Electro-Motive Diesel, Inc. - LaGrange IL
International Classification:

F01D001/02
US Classification:

415206, 415110, 415229
Abstract:

An improved diesel engine water pump includes three main features that aid in extending the maintenance-free life of the pump. The impeller shaft is carried by tapered roller shaft support bearings of which the impeller bearing has a floating outer race that is urged axially by a preload spring to provide a prescribed axial preload that maintains concentricity of the shaft with the axis and prolongs bearing life. An improved oil seal combines an oil slinger, a stationary deflector and a lip oil seal with a return passage to the engine to more effectively limit oil leakage from the pump. An improved water seal includes pressurized water jets fed from the pump volute that flush wear particles from the water seal surface and increase water seal life. Further details of these features are also disclosed.

Cylinder Head With Improved Heat Transfer And Valve Seat Cooling
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US Patent:

7086357, Aug 8, 2006
Filed:

Jan 24, 2005
Appl. No.:

11/041663
Inventors:

Robert T. Mac Vicar - Downers Grove IL, US
Vijaya Kumar - Darien IL, US
John R. Zagone - Westmont IL, US
Assignee:

Electro-Motive Diesel, Inc. - LaGrange IL
International Classification:

F02F 1/36
US Classification:

123 4182R, 123 4177, 123 4131, 1231935
Abstract:

An improvement to a diesel engine cylinder head disclosed in U. S. Pat. No. 4,860,700, wherein the improvement comprises any of: a by-pass opening formed in partition walls thereof; a spine density of less than about five spines per square inch; spacing an inner chamber wall surface thereof with respect to an inner fire-face wall surface thereof between about 0. 75 inches and 0. 25 inches; coolant by-pass ports thereof having a cross-section of between about 0. 1875 inches and 0. 0625 inches; and a radial rib thereof extending complete and free of any rib opening.

Engine Turbocompressor Controllable Bypass System And Method
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US Patent:

20030183212, Oct 2, 2003
Filed:

Mar 26, 2002
Appl. No.:

10/106093
Inventors:

Paul Gottemoller - Palos Park IL, US
Ramesh Poola - Naperville IL, US
David Corba - Des Plaines IL, US
John Zagone - Westmont IL, US
International Classification:

F02B033/00
US Classification:

123/563000
Abstract:

A system for a turbocharged internal combustion engine includes an engine having a charge inlet connected to the compressor outlet and an exhaust outlet connected to the turbine inlet for driving the turbocharger with hot exhaust gas and supplying compressed air to the engine for combustion. A bypass duct connects the compressor outlet to the turbine inlet for diverting a portion of the compressed air around the engine to the turbine inlet. A control member selectively controls the diversion of air. An operating method for the system involves controlling surge in an engine turbocharger compressor by diverting a portion of compressed air to the turbine inlet to limit compressor air pressure and insure sufficient air flow to avoid compressor surge. Preferably, the diverted air enters a distal part of an engine exhaust header for mixing with the exhaust gases prior to passing into the turbine inlet. Other benefits are disclosed.