US 11,719,129 B2
Compressor housing
Gary R. Svihla, Burr Ridge, IL (US); and Shannon W. Omori, Evanston, IL (US)
Assigned to Progress Rail Locomotive Inc., LaGrange, IL (US)
Filed by Progress Rail Locomotive Inc., LaGrange, IL (US)
Filed on Nov. 11, 2021, as Appl. No. 17/524,518.
Prior Publication US 2023/0142571 A1, May 11, 2023
Int. Cl. F01D 25/24 (2006.01); F01D 21/04 (2006.01); F01D 25/28 (2006.01)
CPC F01D 25/24 (2013.01) [F01D 21/045 (2013.01); F01D 25/28 (2013.01); F05D 2220/40 (2013.01); F05D 2230/64 (2013.01); F05D 2240/14 (2013.01); F05D 2260/30 (2013.01)] 20 Claims
OG exemplary drawing
 
9. A method of assembling a compressor housing for a turbocharger that includes a rotatable compressor impeller including a bore therethrough, the method including:
disposing an outer volute about the bore, the outer volute including a back wall and a curved casing, the curved casing defining an airflow-passageway, the back wall extending radially inward from the curved casing, the back wall including a receptacle and a first plurality of annular steps, the receptacle configured to receive an alignment pin that positions a compressor diffuser in the compressor housing;
arranging the back wall of the outer volute and an impeller cover to at least partially form a cavity configured to receive the compressor impeller, wherein the impeller cover is disposed between an inner volute and the cavity, the impeller cover is configured to fragment during impact with the compressor impeller during a failure condition of the compressor impeller;
disposing the compressor diffuser between the back wall and the impeller cover, the compressor diffuser including an annular body, a plurality of fins and the alignment pin, the fins disposed between the annular body and the impeller cover, the alignment pin disposed in the receptacle of the back wall of the outer volute; and
disposing the inner volute between the outer volute and the impeller cover, the inner volute including a bridge and an inner ring, the bridge extending between a first end and a second end of the impeller cover, the bridge and the impeller cover defining a chamber, the inner ring and the bridge and the impeller cover defining a pocket-void disposed inside the chamber.