Dennis E Rooker

US Patent:

6513724, Feb 4, 2003

Filed:

Jun 13, 2001

Appl. No.:

09/879141

Inventors:

J. Michael Joseph - Newport News VA
Dennis Rooker - Williamsburg VA

Assignee:

Siemens Automotive Corporation - Auburn Hills MI

International Classification:

F02D 700

US Classification:

239 5, 239461, 23953312, 23953314, 2395851, 2395852, 2395853, 2395854, 2395855, 2395332, 2395333, 239596

Abstract:

A method and apparatus for defining a spray pattern to reduce the variation in the metering, targeting, distribution, and atomization of the fuel output of a fuel injector. The fuel injector contains a closure member extending along the longitudinal axis of the injector. The closure member can be positioned contiguous to a seat to occlude fuel flow. A sealing radius is defined when the closure member is in this position. The closure member can also be positioned such that it is not contiguous to the seat, thereby permitting fuel flow. A plate is disposed proximate to the seat with a first and second face, the first face facing the seat. An inlet is located on the first face of the plate, and at least one chamber is disposed on the second face of the plate. The inlet and the at least one chamber are in fluid communication. An orifice disc is disposed in a confronting arrangement with the second face of the plate such that each chamber is located proximal to each orifice.

US Patent:

6536269, Mar 25, 2003

Filed:

Dec 11, 2000

Appl. No.:

09/733790

Inventors:

Dennis E. Rooker - Williamsburg VA

Assignee:

Siemens Automotive Corporation - Auburn Hills MI

International Classification:

G01M 1500

US Classification:

73119A, 33607, 81451, 738659

Abstract:

A method of inserting an injector in a test head includes inserting the injector in a puck; aligning the puck beneath the test head; engaging a bottom of the puck with a floating cone assembly; raising the puck upwards towards the test head; and inserting a top portion of the injector into the test head. The floating locator cone assembly includes a floating locator cone mount; a ball thrust bearing assembly inserted in the floating locator cone mount; and a floating locator cone inserted in the floating locator cone mount on top of the ball thrust bearing. Use of the floating locator cone assembly allows the puck to center itself thereby allowing the injector to be properly aligned upon insertion in the test head. Proper alignment of the injector reduces false leak test readings and the consequent rejection of good injectors.

US Patent:

63148048, Nov 13, 2001

Filed:

Jun 25, 1999

Appl. No.:

9/340109

Inventors:

Edward J. Nemie - Newport News VA
Dennis E. Rooker - Williamsburg VA

Assignee:

Siemens Automotive Corporation - Auburn Hills MI

International Classification:

G01M 1500

US Classification:

73119A

Abstract:

A method of inserting an injector in a test head includes inserting the injector in a puck; aligning the puck beneath the test head; engaging a bottom of the puck with a floating cone assembly; raising the puck upwards towards the test head; and inserting a top portion of the injector into the test head. The floating locator cone assembly includes a floating locator cone mount; a ball thrust bearing assembly inserted in the floating locator cone mount; and a floating locator cone inserted in the floating locator cone mount on top of the ball thrust bearing. Use of the floating locator cone assembly allows the puck to center itself thereby allowing the injector to be properly aligned upon insertion in the test head. Proper alignment of the injector reduces false leak test readings and the consequent rejection of good injectors.