US 11,982,222 B2
Wastegate valve device, turbine, and turbocharger
Kunihiro Tomikawa, Tokyo (JP); Toru Hoshi, Tokyo (JP); Takeshi Yasoshima, Tokyo (JP); and Naoto Tashiro, Sagamihara (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD., Sagamihara (JP)
Appl. No. 18/018,169
Filed by MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD., Sagamihara (JP)
PCT Filed Aug. 17, 2020, PCT No. PCT/JP2020/030969
§ 371(c)(1), (2) Date Jan. 26, 2023,
PCT Pub. No. WO2022/038653, PCT Pub. Date Feb. 24, 2022.
Prior Publication US 2023/0265784 A1, Aug. 24, 2023
Int. Cl. F02B 37/18 (2006.01); F01D 17/10 (2006.01)
CPC F02B 37/183 (2013.01) [F01D 17/105 (2013.01); F05D 2220/40 (2013.01); F05D 2260/606 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A wastegate valve device disposed on a bypass passage bypassing a turbine of a turbocharger arranged on an exhaust gas passage of an engine, comprising:
a valve seat surface formed at an outlet of the bypass passage; and
a wastegate valve body which includes a support arm supported rotatably about an axis and a valve body supported by the support arm, the valve body being configured to come into and out of contact with the valve seat surface in accordance with rotation of the support arm,
wherein the valve seat surface is inclined with respect to a direction orthogonal to an axial direction of the bypass passage, as viewed from a direction of the axis, and
wherein the valve body has a rotation center located radially outward of a turbine wheel relative to a center line of the bypass passage, as viewed from the direction of the axis.