公开(公告)号：US20210363915A1

公开(公告)日：2021-11-25

申请号：US16976315

申请日：2018-03-05

Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.

Inventor： Tsuyoshi KITAMURA ,  Takao YOKOYAMA ,  Kunihiro TOMIKAWA ,  Makoto OZAKI

IPC: F02B37/18 ,  F01N13/10 ,  F02M35/10 ,  F01D9/02 ,  F02C6/12 ,  F01D17/10

Abstract: A turbocharger according to an embodiment is a turbocharger including a turbine housing for housing a turbine wheel rotary driven by an exhaust gas, a bearing housing for housing a rotational shaft on which the turbine wheel is mounted, the bearing housing being adjacent to the turbine housing, and a wastegate portion including a bypass passage and a valve body, the bypass passage allowing the exhaust gas to bypass the turbine wheel, the valve body being able to adjust a flow rate of the exhaust gas flowing through the bypass passage. In the turbine housing, a scroll passage for supplying the exhaust gas to the turbine wheel is formed by casting, at least on a radially outer side of the turbine wheel. A fastening portion for fastening the turbine housing and the bearing housing is disposed on a radially outer side of the scroll passage.

公开(公告)号：US20230265784A1

公开(公告)日：2023-08-24

申请号：US18018169

申请日：2020-08-17

Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.

Inventor： Kunihiro TOMIKAWA ,  Toru HOSHI ,  Takeshi YASOSHIMA ,  Naoto TASHIRO

IPC: F02B37/18 ,  F01D17/10

CPC classification number: F02B37/183 ,  F01D17/105 ,  F05D2220/40 ,  F05D2260/606

Abstract: A wastegate valve device according to at least one embodiment is a wastegate valve device disposed on a bypass passage bypassing a turbine of a turbocharger arranged on an exhaust gas passage of an engine, including: 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. In the wastegate valve device according to at least one embodiment, 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 above-described axis.