US 12,173,666 B2
Throttle valve control device
Hidefumi Hatsuzawa, Hitachinaka (JP); Hiroyuki Ota, Hitachinaka (JP); Takuya Tanaka, Hitachinaka (JP); Makoto Kawano, Hitachinaka (JP); and Yoshihiko Akagi, Hitachinaka (JP)
Assigned to Hitachi Astemo, Ltd., Hitachinaka (JP)
Appl. No. 18/557,767
Filed by Hitachi Astemo, Ltd., Hitachinaka (JP)
PCT Filed Feb. 2, 2022, PCT No. PCT/JP2022/003961
§ 371(c)(1), (2) Date Oct. 27, 2023,
PCT Pub. No. WO2022/264483, PCT Pub. Date Dec. 22, 2022.
Claims priority of application No. 2021-100013 (JP), filed on Jun. 16, 2021.
Prior Publication US 2024/0218840 A1, Jul. 4, 2024
Int. Cl. F02D 9/10 (2006.01); F02D 11/10 (2006.01)
CPC F02D 9/1035 (2013.01) [F02D 11/10 (2013.01); F02D 2011/101 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A throttle valve control device comprising:
a throttle body in which an intake passage through which intake air flows is formed;
a throttle valve that adjusts an amount of air passing through the intake passage;
a throttle shaft fixed to the throttle valve; and
a first bearing and a second bearing that are immediately adjacent to the intake passage and that rotatably support the throttle shaft,
a flow path through which a heat exchange medium flows being formed in the throttle body, wherein
a diameter of the first bearing is greater than a diameter of the second bearing,
the flow path is disposed along an outer periphery of the intake passage to overlap with the second bearing when viewed from a flow direction of the intake passage, and
an inlet portion and an outlet portion of the flow path are disposed to sandwich the first bearing.