US 12,259,053 B2
Exhaust valve
Tetsuaki Nomura, Isesaki (JP)
Assigned to SANKEI GIKEN KOGYO CO., LTD., Tokyo (JP)
Appl. No. 18/283,288
Filed by SANKEI GIKEN KOGYO CO., LTD., Tokyo (JP)
PCT Filed Mar. 26, 2021, PCT No. PCT/JP2021/013159
§ 371(c)(1), (2) Date Sep. 21, 2023,
PCT Pub. No. WO2022/201559, PCT Pub. Date Sep. 29, 2022.
Prior Publication US 2024/0175507 A1, May 30, 2024
Int. Cl. F16K 1/22 (2006.01); F02D 9/10 (2006.01); F16K 1/226 (2006.01); F16K 27/02 (2006.01)
CPC F16K 27/0218 (2013.01) [F02D 9/10 (2013.01); F16K 1/2263 (2013.01)] 2 Claims
OG exemplary drawing
 
1. An exhaust valve comprising:
a pipe body connecting an upstream pipe and a downstream pipe for exhaust;
a valve plate disposed inside the pipe body in a state of being attached to a rotary shaft that rotates by drive of an actuator, the valve plate configured to rotate to open/close an exhaust flow path inside the pipe body; and
a stopper fixed inside the pipe body and configured to come into contact with the valve plate in a closed state, wherein
in the stopper, at least one of an upstream contact surface at which the valve plate makes contact and a downstream contact surface at which the valve plate makes contact runs along an inner peripheral surface of the pipe body at a position closer to an upstream side or a downstream side of the exhaust than an outer periphery of the rotary shaft, and
the valve plate comes into contact with the upstream contact surface and the downstream contact surface at a position at which the valve plate closes the exhaust flow path,
wherein an end portion of the upstream contact surface or the downstream contact surface is extended to a position overlapping, in an axial direction of the pipe body, one root portion of the rotary shaft, the end portion of the upstream contact surface or the downstream contact surface is positioned on the upstream side or the downstream side of the one root portion of the rotary shaft.