David P Wieczorek Deceased217 Sparrer Rd, Seaford, VA 23696

6357677, Mar 19, 2002

Mar 30, 2000

09/538730

Wei-Min Ren - Yorktown VA
David P. Wieczorek - Seaford VA

Siemens Automotive Corporation - Auburn Hills MI

F02M 5100

2395854, 239596

A metering assembly for a fuel injector having multiple orifice plates is disclosed. The metering assembly includes a valve body, a seat, a needle and a multi-layer orifice plate assembly. The valve body has an inlet, an outlet and a longitudinal axis extending therethrough. The seat is disposed proximate the outlet and includes a passage having a sealing surface and an orifice. The needle is reciprocally located within the housing along the longitudinal axis between a first position wherein the needle is displaced from the seat, allowing fuel flow past the needle, and a second position wherein the needle is biased against the seat, precluding fuel flow past the needle. The multi-layer orifice plate assembly is located at the housing outlet and includes a first orifice plate having a plurality of first openings extending therethrough. The orifice plate assembly further includes a second orifice plate having a plurality of second openings extending therethrough. The plurality of first openings and the plurality of second openings are fluidly connected by at least one channel.

6400066, Jun 4, 2002

Jun 30, 2000

09/608961

Thomas Allen Sumrak - Smithfield VA
David Paul Wieczorek - Seaford VA

Siemens Automotive Corporation - Auburn Hills MI

F02M 4702

310346, 123472, 2391021

A fuel injector comprises a tube assembly, a stem assembly, and a plurality of sets of piezoelectric elements. The tube assembly includes a seat defining an opening through which fuel enters an internal combustion engine. The stem assembly includes a cap and a stem that are relatively movable with respect to one another. A gap is located between the stem and cap when the stem contiguously engages the seat such that fuel flow through the opening is prevented. A first set of piezoelectric elements moves the cap in response to a first electric field, and a second set of piezoelectric elements moves the first set of piezoelectric elements in response to a second electric field. A sensor measuring the gap compensates the second electric field for physical changes in at least one of the tube and stem assemblies.

6650032, Nov 18, 2003

Jun 3, 2002

10/159281

Thomas Allen Sumrak - Smithfield VA
David Paul Wieczorek - Seaford VA

Siemens Automotive Corporation - Auburn Hills MI

H01L 41083

310346, 123472, 2391021

A fuel injector comprises a tube assembly, a stem assembly, and a plurality of sets of piezoelectric elements. The tube assembly includes a seat defining an opening through which fuel enters an internal combustion engine. The stem assembly includes a cap and a stem that are relatively movable with respect to one another. A gap is located between the stem and cap when the stem contiguously engages the seat such that fuel flow through the opening is prevented. A first set of piezoelectric elements moves the cap in response to a first electric field, and a second set of piezoelectric elements moves the first set of piezoelectric elements in response to a second electric field. A sensor measuring the gap compensates the second electric field for physical changes in at least one of the tube and stem assemblies.

6886758, May 3, 2005

Jan 13, 2000

09/482060

David P. Wieczorek - Seaford VA, US
John Wesley Phillips - Gloucester Point VA, US

Siemens VDO Automotive Corp. - Auburn Hills MI

B05B015/00

2391325, 239497, 239464, 23953312, 2395855

A fuel injector having an arrangement to stabilize the temperature of its components within an engine cylinder in a direct injection application. The fuel injector includes a body, an armature, a needle, a swirl generator, and a seat. The body has an inlet portion, an outlet portion, a body passage, extending from the inlet portion to the outlet portion along a longitudinal axis of the fuel injector. The armature is located proximate the inlet portion of the body, and is operatively connected to the needle. The needle is provided with a substantially uniform cross-sectional area, and the body is selected to surround the needle and form a body passage that has an average cross-sectional area less than two times the substantially uniform cross-sectional area of the needle. In particular, the body includes a neck, which is preferably a cylindrical annulus, that has an inner diameter that is no more than 50% greater than a diameter of a preferred cylindrical needle, and an outer diameter that is no less than 100% greater than the inner diameter. The swirl generator is located proximate the needle and the seat.

2004005, Mar 25, 2004

Aug 20, 2003

10/644019

David Wieczorek - Seaford VA, US
John Phillips - Gloucester Point VA, US

Siemens Automotive Corporation

B05B001/34

239/533120, 239/585100, 239/585500, 239/492000

A fuel injector having an arrangement to stabilize the temperature of its components within an engine cylinder in a direct injection application. The fuel injector includes a body, an armature, a needle, a swirl generator, and a seat. The body has an inlet portion, an outlet portion, a body passage, extending from the inlet portion to the outlet portion along a longitudinal axis of the fuel injector. The armature is located proximate the inlet portion of the body, and is operatively connected to the needle. The needle is provided with a substantially uniform cross-sectional area, and the body is selected to surround the needle and form a body passage that has an average cross-sectional area less than two times the substantially uniform cross-sectional area of the needle. In particular, the body includes a neck, which is preferably a cylindrical annulus, that has an inner diameter that is no more than 50% greater than a diameter of a preferred cylindrical needle, and an outer diameter that is no less than 100% greater than the inner diameter. The swirl generator is located proximate the needle and the seat. The needle engages the seat, which is disposed at the outlet portion of the body. The seat, preferably, includes a first surface exposed to the body passage and a second surface exposed to an exterior of the fuel injector. The first surface is spaced from the second surface a defined distance along the longitudinal axis. Alternatively, the first surface has at least one cut-out configuration, which is preferably, at least one volume that defines at least one wall that extends from the first surface for a fraction of the defined distance into an interior of the seat.

5704553, Jan 6, 1998

Oct 30, 1995

8/550049

David P. Wieczorek - Newport News VA
Hans J. Sailer - Williamsburg VA

B05B 130
F16K 3102

2395851

A compact injector armature valve assembly for a fuel injector allowing the O-ring to O-ring spacing to be reduced. The armature valve assembly is a cylindrical hollow magnetic piece, with a narrow necked down portion to act as the receiving end for a ball, which is directly attached to the necked down portion. The attachment of the necked down portion by means of crimping or chemical bonding above the mid-point of the ball allows the strengths of a pivot style guidance scheme to be used.

5641126, Jun 24, 1997

May 19, 1995

8/444495

Debora E. Nally - Williamsburg VA
David P. Wieczorek - Newport News VA
Michael J. Frick - Yorktown VA

Siemens Automotive Corporation - Auburn Hills MI

B05B 114

239575

An engine fuel injection system includes a conventional fuel rail with a top feed fuel injector connected thereto. The overall length of the injector is able to be shortened by the application of compact fuel inlet filter mountings in which a well (deep cup) shaped filter element is positioned to overlap one or both of (1) an adjusting tube within the injector body and (2) a space between the end of the injector fuel inlet tube and the interior of the associated fuel rail. The filter may be fixed within the injector to the adjusting tube or the inlet tube or may be fixed externally of the injector to the fuel rail. Various exemplary embodiments are shown and described.

5878962, Mar 9, 1999

Sep 24, 1997

8/936247

Jingming Jim Shen - Newport News VA
Wei-Min Ren - Yorktown VA
David P. Wieczorek - Seaford VA
Gyula A. Huszar - Newport News VA

Siemens Automotive Corporation - Auburn Hills MI

F02M 6120
F02M 5100
B05B 134

2395339

A fuel injector has a swirl plate about a valve assembly, including a valve seat with an orifice and a valve pin. When the valve is opened, the fuel is swirled by the swirl plate for passage through the orifice. The orifice has a portion which is angled relative to the axis of the injector to provide a conical swirling spray pattern having a conical spray axis angularly related to the axis of the injector. In another form, the orifice is on-axis with the injector and receives a bent tube having an upstream on-axis portion and a downstream angled portion to direct the swirling conical spray at an included obtuse angle relative to the axis of the injector.