Julie M Swartz

US Patent:

20210123346, Apr 29, 2021

Filed:

Oct 23, 2019

Appl. No.:

16/661203

Inventors:

- Detroit MI, US
Chijou Wang - Farmington Hills, US
Julie A. Swartz - Commerce Township MI, US
Su Jung Han - West Bloomfield MI, US

International Classification:

F01D 5/02
F01D 5/28

Abstract:

A turbine wheel for a turbocharger of a vehicle propulsion system includes a central hub and a plurality of blades extending outwardly from the central hub. Each of the blades defining an inducer section and an exducer section, and each of the blades including a first surface portion and a second surface portion. The first surface portion including a thermal barrier coating and the second surface portion free from the thermal barrier coating.

US Patent:

20190093197, Mar 28, 2019

Filed:

Sep 26, 2017

Appl. No.:

15/715907

Inventors:

- Detroit MI, US
Daad B. Haddad - Sterling Heights MI, US
Julie A. Swartz - Commerce Township MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

C22C 21/00
C22C 1/10

Abstract:

Al—Fe—Si alloys having optimized properties through the use of additives are disclosed. In some aspects, mechanical properties are optimized using mechanical-optimizing additives such as a combination of boron, zirconium, chromium and molybdenum. In some aspects, corrosion-inhibiting properties are optimized using corrosion-inhibiting additives such as chromium, molybdenum, and tungsten. In some aspects, ductility is optimized by the inclusion of twinning additives such as any of zinc, copper, vanadium, and molybdenum.

US Patent:

20190093198, Mar 28, 2019

Filed:

Oct 10, 2018

Appl. No.:

16/156265

Inventors:

- Detroit MI, US
Daad B. Haddad - Sterling Heights MI, US
Julie A. Swartz - Commerce Township MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

C22C 21/00
C22C 30/00

Abstract:

Al—Fe—Si alloys having optimized properties through the use of additives are disclosed. In some aspects, an alloy includes aluminum in a first amount, iron in a second amount, silicon in a third amount, and an additive in a fourth amount. The additive is selected from the group consisting of a non-metal additive, a transition-metal additive, a rare-metal additive, and combinations thereof. The first amount, the second amount, the third amount, and the fourth amount produce an alloy with a stoichiometric formula (AlA)FeSi where A is the additive.

US Patent:

20180347452, Dec 6, 2018

Filed:

Jun 1, 2017

Appl. No.:

15/611180

Inventors:

- Detroit MI, US
Huaxin Li - Rochester Hills MI, US
Julie A. Swartz - Commerce Township MI, US
Jane E. Preston - Highland MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC - Detroit MI

International Classification:

F02B 37/18
F02B 39/08
B23K 26/22

Abstract:

A method of joining parts of the wastegate assembly, and a wastegate assembly includes an arm defining a hole. The wastegate assembly also includes a shaft. The shaft includes a first end disposed inside the hole of the arm. The shaft includes an outer surface defining a groove disposed inside the hole of the arm. The arm and the first end of the shaft are welded together to form a joint having a joint root region disposed adjacent to the groove.A turbocharger includes a compressor, a turbine and a rotating assembly driven by exhaust gas. The rotating assembly has a turbine wheel disposed inside the turbine and a compressor wheel disposed inside the compressor. The turbocharger further includes the wastegate assembly described above, and the wastegate assembly defines an opening configured to selectively redirect at least a portion of the exhaust gas to bypass the turbine wheel.

US Patent:

20180156064, Jun 7, 2018

Filed:

Dec 6, 2016

Appl. No.:

15/370521

Inventors:

- Detroit MI, US
Julie Swartz - Commerce Twp. MI, US
Louis Begin - Rochester MI, US
Zhe Li - Rochester MI, US

International Classification:

F01D 25/14
F01D 25/24
C04B 35/48
C23C 30/00

Abstract:

Provided herein are thermal barrier coatings (TBC) and turbocharger heat shields comprising the same. The turbocharger heat shield can be metallic and include a front face having an aperture capable of accepting a turbocharger shaft. The TBC can include a bond coat applied to the turbocharger heat shield, an interfacial layer contacting the bond coat, and a ceramic top coat contacting the interfacial layer. The bond coat of the TBC can comprise nickel, at least about 4% aluminum, up to about 36% chromium. One or more of the one or more of the interfacial layer and the ceramic top coat can comprise aluminum oxide, titanium oxide, spinel, yttria-stabilized zirconia, gadolinium zirconate, and combinations thereof. One or more of the interfacial layer and the ceramic top coat can be free from yttria-stabilized zirconia and gadolinium zirconate. The TBC can have a total thickness of at least about 100 μm.