Angelo D Darrigo

US Patent:

6409101, Jun 25, 2002

Filed:

Jun 30, 2000

Appl. No.:

09/606687

Inventors:

Angelo DArrigo - Newport News VA

Assignee:

Siemens Automotive Corporation - Auburn Hills MI

International Classification:

B05B 130

US Classification:

2395851, 2395852, 2395853, 2395854, 2395855

Abstract:

A fuel injector is disclosed. The fuel injector includes a hollow body having an upstream segment and a downstream segment and a valve. The valve has a needle assembly which includes an upstream segment having a first longitudinal channel extending therethrough and a magnetic armature located within the first longitudinal channel. The armature includes a passage extending therethrough. The needle assembly also includes a downstream segment having a second longitudinal channel co-axial with and communicating with the first longitudinal channel. The second longitudinal channel extends through the downstream segment. The needle assembly also includes a seating body located at a downstream end of the downstream segment and a transverse passage located upstream of the seating body. The transverse passage communicates with at least one of the first and the second longitudinal channels. A method of fabricating a needle assembly for a fuel injector is also disclosed.

US Patent:

6422486, Jul 23, 2002

Filed:

Mar 31, 2000

Appl. No.:

09/538963

Inventors:

Angelo DArrigo - Newport News VA

Assignee:

Siemens Automotive Corporation - Auburn Hills MI

International Classification:

F02M 6110

US Classification:

23953311, 2395854, 239900

Abstract:

A fuel injector for an internal combustion engine is provided. The fuel injector includes a housing and an armature/needle assembly reciprocally mounted in the housing. The armature/needle assembly includes an armature having an armature end and a longitudinal armature channel extending therethrough and a needle having a longitudinal needle axis and a first needle end inserted in the armature channel. The first needle end is fixedly connected to the armature end. The assembly also includes at least one flow channel between the armature and the needle. The fuel injector further includes a valve seat located downstream of the needle. The needle is selectively engageable and disengageable with the valve seat to preclude fuel flow through an opening in the valve seat and to allow fuel flow through the opening in the valve seat, respectively. A method of forming the armature/needle assembly is also provided.

US Patent:

6523759, Feb 25, 2003

Filed:

Jun 27, 2000

Appl. No.:

09/604401

Inventors:

Angelo DArrigo - Newport News VA

Assignee:

Siemens Automotive Corporation - Auburn Hills MI

International Classification:

B05B 130

US Classification:

2395851, 2395854, 25112921

Abstract:

A fuel injector having a reduced bounce armature is disclosed. The fuel injector includes an upstream end, a downstream end, and a valve seat located at the downstream end. The armature located between the upstream end and the downstream end and includes an upstream armature end; a downstream armature end; and a longitudinal channel extending therethrough. The longitudinal channel includes an upstream portion having a first cross-sectional area and a downstream portion having a second cross-sectional area, with the second cross-sectional area being smaller than the first cross-sectional area. The downstream portion includes at least one interior wall. The armature also includes a flow restrictor element inserted into the downstream portion of the longitudinal channel such that liquid flow from the downstream armature end to the upstream armature end is restricted. The fuel injector further includes a needle located in the longitudinal channel downstream of the transverse channel. The needle extends from the longitudinal channel and is reciprocably engageable with the valve seat in a closed position.

US Patent:

6543133, Apr 8, 2003

Filed:

Mar 20, 2002

Appl. No.:

10/101364

Inventors:

Angelo DArrigo - Newport News VA

Assignee:

Siemens Automotive Corporation - Auburn Hills MI

International Classification:

B23P 1500

US Classification:

2988846, 29890124, 29890126, 2989013

Abstract:

A fuel injector for an internal combustion engine is provided. The fuel injector includes a housing and an armature/needle assembly reciprocally mounted in the housing. The armature/needle assembly includes an armature having an armature end and a longitudinal armature channel extending therethrough and a needle having a longitudinal needle axis and a first needle end inserted in the armature channel. The first needle end is fixedly connected to the armature end. The assembly also includes at least one flow channel between the armature and the needle. The fuel injector further includes a valve seat located downstream of the needle. The needle is selectively engageable and disengageable with the valve seat to preclude fuel flow through an opening in the valve seat and to allow fuel flow through the opening in the valve seat, respectively. A method of forming the armature/needle assembly is also provided.

US Patent:

6687965, Feb 10, 2004

Filed:

Mar 20, 2002

Appl. No.:

10/101335

Inventors:

Angelo DArrigo - Newport News VA

Assignee:

Siemens Automotive Corporation - Auburn Hills MI

International Classification:

B21K 120

US Classification:

29235, 292835, 29237, 72402

Abstract:

A method of setting a distance between a first body and a second body in a fuel injector is disclosed. The method includes providing an intermediate body having a first end, a second end and a longitudinal axis, the first end being fixedly connected to the first body and the second end being fixedly connected to the second body. The intermediate body is compressed toward the longitudinal axis. The compression axially elongates the intermediate body, such that the first body is separated from the second body. An apparatus used to set the distance is also disclosed.

US Patent:

6758421, Jul 6, 2004

Filed:

Mar 31, 2000

Appl. No.:

09/539556

Inventors:

Angelo DArrigo - Newport News VA

Assignee:

Siemens Automotive Corporation - Auburn Hills MI

International Classification:

B05B 130

US Classification:

2395855, 2395851

Abstract:

An armature lift assembly for a fuel injector is disclosed. The assembly includes a body having an upstream end, a downstream end, and a longitudinal body channel extending therethrough and an armature/needle assembly which is reciprocably disposed in the body along the longitudinal body channel. The assembly further includes a first tube having an upstream end, a downstream end fixedly connected to the upstream end of the body, and a first tube channel. The assembly also includes a second tube located within the first tube channel and fixedly connected to the first tube. The second tube has an upstream end and a downstream end. The downstream end of the second tube is spaced a distance from the upstream end of the armature/needle assembly approximately equal to a lift distance of the armature/needle assembly. A method of setting armature/needle lift in a fuel injector is also disclosed.

US Patent:

6786434, Sep 7, 2004

Filed:

Sep 6, 2001

Appl. No.:

09/946675

Inventors:

Angelo DArrigo - Newport News VA

Assignee:

Siemens Automotive Corporation - Auburn Hills MI

International Classification:

B05B 1700

US Classification:

2395854, 239 5

Abstract:

An armature lift assembly for a fuel injector is disclosed. The assembly includes a body having an upstream end, a downstream end, and a longitudinal body channel extending therethrough and an armature/needle assembly which is reciprocably disposed in the body along the longitudinal body channel. The assembly further includes a first tube having an upstream end, a downstream end fixedly connected to the upstream end of the body, and a first tube channel. The assembly also includes a second tube located within the first tube channel and fixedly connected to the first tube. The second tube has an upstream end and a downstream end. The downstream end of the second tube is spaced a distance from the upstream end of the armature/needle assembly approximately equal to a lift distance of the armature/needle assembly. A method of setting armature/needle lift in a fuel injector is also disclosed.

US Patent:

6385848, May 14, 2002

Filed:

Jun 29, 2000

Appl. No.:

09/606160

Inventors:

Angelo DArrigo - Newport News VA

Assignee:

Siemens Automotive Corporation - Auburn Hills MI

International Classification:

B21K 120

US Classification:

29890129, 29890126, 29890131

Abstract:

A method of setting a distance between a first body and a second body in a fuel injector is disclosed. The method includes providing an intermediate body having a first end, a second end and a longitudinal axis, the first end being fixedly connected to the first body and the second end being fixedly connected to the second body. The intermediate body is compressed toward the longitudinal axis. The compression axially elongates the intermediate body, such that the first body is separated from the second body. An apparatus used to set the distance is also disclosed.