US 12,168,953 B2
E-charger with longitudinal cooling passage
Vit Houst, Sestajovice (CZ); Milan Nejedly, Brno (CZ); Daniel Turecek, Ostopovice (CZ); and Pavel Krejci, Brno (CZ)
Assigned to GARRETT TRANSPORTATION I INC., Torrance, CA (US)
Filed by Garrett Transportation I Inc., Torrance, CA (US)
Filed on Mar. 30, 2023, as Appl. No. 18/192,669.
Application 18/192,669 is a continuation of application No. 16/696,313, filed on Nov. 26, 2019, granted, now 11,732,638.
Prior Publication US 2023/0235696 A1, Jul. 27, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F02B 39/00 (2006.01); F02B 37/04 (2006.01); F02B 39/10 (2006.01); F04D 17/08 (2006.01); F04D 29/043 (2006.01); F04D 29/58 (2006.01); H02K 5/16 (2006.01); H02K 5/20 (2006.01); H02K 9/08 (2006.01); H02K 15/14 (2006.01)
CPC F02B 39/005 (2013.01) [F02B 37/04 (2013.01); F02B 39/10 (2013.01); F04D 17/08 (2013.01); F04D 29/043 (2013.01); F04D 29/58 (2013.01); H02K 5/16 (2013.01); H02K 5/203 (2021.01); H02K 9/08 (2013.01); H02K 15/14 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An e-charger comprising:
a motor that drives a shaft for rotation about an axis, the axis extending through a first end of the motor and a second end of the motor;
a compressor wheel that is attached to the shaft to be rotatably driven by the motor to thereby provide a compressed fluid stream;
a motor case that encases the motor, the motor case including a first end face proximate the first end, a second end face proximate the second end, and an outer diameter surface that extends longitudinally between the first end face and the second end face, the axis extending through the first end face and the second end face;
an outer housing that houses the motor case; and
a cooling system with an inlet, an outlet, and a plurality of passages fluidly connecting the inlet and the outlet, the plurality of passages cooperatively defined by the outer housing and the motor case, the plurality of passages including a first longitudinal passage, a second longitudinal passage, and an end passage, the first longitudinal passage extending between the first and second ends of the motor, the second longitudinal passage extending between the second and first ends of the motor, the end passage fluidly connecting the first longitudinal passage and the second longitudinal passage, the cooling system configured for directing flow of the coolant from the inlet, through the first longitudinal passage in a first longitudinal direction with respect to the axis, through the end passage, and back through the second longitudinal passage in a second longitudinal direction with respect to the axis, one of the first end face and the second end face cooperating with the outer housing to define the end passage, the end passage extending transverse to the axis radially inward from the first longitudinal passage and the second longitudinal passage and extending radially along the one of the first end face and the second end face with respect to the axis.