公开(公告)号：US20190003400A1

公开(公告)日：2019-01-03

申请号：US16068633

申请日：2016-01-08

Applicant: MAZDA MOTOR CORPORATION

Inventor： Ken OHTSUKI ,  Kimio ISHIDA ,  Shuhei TSUJITA ,  Einosuke SUEKUNI ,  Mitsuyuki MUROTANI ,  Junji UMEMURA

IPC: F02D9/06 ,  F02B37/22 ,  F15B15/10 ,  F15B15/24 ,  F02D9/10 ,  F16K31/126

Abstract: A negative pressure type actuator (4) includes a diaphragm (43), an output shaft (44) extending toward an opposite side of a negative pressure chamber (410), a stopper (46) provided such that the output shaft penetrates the stopper, and a stopper engagement portion (47) fixed to the output shaft. The stopper has a first contact surface (462) configured to contact a stopper engagement portion, and the stopper engagement portion has a second contact surface (471). The first contact surface (462) is formed in an arc shape in a section including the axis (X2) of the output shaft, and the second contact surface (471) is, in the section including the axis of the output shaft, formed in an arc shape with the same curvature as that of the first contact surface.

公开(公告)号：US20200040855A1

公开(公告)日：2020-02-06

申请号：US16339551

申请日：2016-10-11

Applicant: MAZDA MOTOR CORPORATION

Inventor： Yoshiyuki UEHANE ,  Ken OHTSUKI ,  Einosuke SUEKUNI ,  Kimio ISHIDA ,  Hiroshi HOSOKAWA ,  Junji WATANABE

IPC: F02M35/12 ,  F02B37/12 ,  F02M35/10 ,  F02D9/02 ,  F02B39/16

Abstract: An intake passage structure for a turbocharger-equipped engine (1) includes a supercharging passage (71) and an air relief passage (72) provided in a compressor case (21a). The air relief passage (72) has an air outflow port (72a) formed through an inner wall surface of an upstream portion (71a) of the supercharging passage (71) upstream of the compressor (21). A projecting member (91) projecting radially inward of a specific portion (90) is provided on a portion of an inner wall surface of the specific portion (90) in a circumferential direction of the inner wall surface. The specific portion (90) ranges from a downstream portion of an upstream intake passage (32) to a portion of the supercharging passage (71) upstream of the air outflow port (72a).

公开(公告)号：US20200040810A1

公开(公告)日：2020-02-06

申请号：US16339464

申请日：2016-10-11

Applicant: MAZDA MOTOR CORPORATION

Inventor： Yoshiyuki UEHANE ,  Ken OHTSUKI ,  Einosuke SUEKUNI ,  Kimio ISHIDA ,  Hiroshi HOSOKAWA ,  Junji WATANABE

IPC: F02B37/12 ,  F02M35/10 ,  F02D9/02 ,  F02B39/16

Abstract: An intake passage structure for a turbocharger-equipped engine (1) includes a supercharging passage (71) and an air relief passage (72) that are provided in a compressor case (72a). The air relief passage (72) has a first passage (73) and a second passage (74), each of which is in a non-linear shape. The first and second passages (73) and (74) each have an air outflow port (73a, 74a) formed through an inner wall surface of an upstream portion (71a) of the supercharging passage (71) upstream of a compressor (21). The air outflow ports (73a, 74a) are formed through different portions of the inner wall surface in a circumferential direction of the inner wall surface so as to overlap with each other in a direction along a central axis of the upstream portion (71a).