US 11,873,724 B2
Compressor assembly with nonstick coating and method of manufacturing same
Jeremy R. Kirklin, Novi, MI (US); Carnell E. Williams, Ortonville, MI (US); and Anil K. Sachdev, Rochester Hills, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Jul. 30, 2020, as Appl. No. 16/943,070.
Prior Publication US 2022/0034235 A1, Feb. 3, 2022
Int. Cl. F01D 25/00 (2006.01); C22F 1/047 (2006.01); C22F 1/053 (2006.01); C22F 1/057 (2006.01); C22C 21/08 (2006.01); C22C 21/16 (2006.01); C22C 21/10 (2006.01); F02B 39/00 (2006.01); F01D 5/28 (2006.01); B05D 5/08 (2006.01)
CPC F01D 25/007 (2013.01) [B05D 5/083 (2013.01); C22C 21/08 (2013.01); C22C 21/10 (2013.01); C22C 21/16 (2013.01); C22F 1/047 (2013.01); C22F 1/053 (2013.01); C22F 1/057 (2013.01); F01D 5/288 (2013.01); F01D 25/005 (2013.01); F02B 39/00 (2013.01); F05D 2220/40 (2013.01); F05D 2230/90 (2013.01); F05D 2240/24 (2013.01); F05D 2300/173 (2013.01); F05D 2300/43 (2013.01); F05D 2300/432 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A compressor assembly configured to pressurize an airflow for delivery to an internal combustion engine having one or more cylinders, the compressor assembly comprising:
a compressor housing having an internal aerodynamic surface that defines a circumferentially extending volute;
a compressor impeller disposed within the compressor housing and having an external aerodynamic surface that faces toward at least a portion of the internal aerodynamic surface of the compressor housing; and
a nonstick coating formed on the internal aerodynamic surface of the compressor housing or on the external aerodynamic surface of the compressor impeller,
wherein the nonstick coating comprises a polysiloxane, zirconia, silica, alumina, titanium dioxide, polyvinylidene fluoride, a perfluoroalkoxy polymer, fluorinated ethylene-propylene, or a combination thereof.