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：US20170260912A1

公开(公告)日：2017-09-14

申请号：US15443608

申请日：2017-02-27

Applicant: MAZDA MOTOR CORPORATION

Inventor： Shuhei TSUJITA ,  Einosuke SUEKUNI ,  Mitsuyuki MUROTANI ,  Junji UMEMURA

IPC: F02D9/10

CPC classification number: F02D9/1065 ,  F02D9/04 ,  F02D9/106

Abstract: An exhaust system of an engine includes a plate-like valve configured to change a cross-sectional area of an exhaust passage, a drive shaft configured to rotate the valve, a bearing provided for a wall member segmenting the exhaust passage to rotatably support the valve, and a driver configured to rotate the drive shaft. The drive shaft penetrates the wall member, and includes an extension extending outside the exhaust passage. The system also includes an auxiliary bearing that rotatably supports the extension of the drive shaft. The auxiliary bearing is spaced apart from the wall member by a predetermined distance.

公开(公告)号：US20140109569A1

公开(公告)日：2014-04-24

申请号：US14052424

申请日：2013-10-11

Applicant: MAZDA MOTOR CORPORATION

Inventor： Shuhei TSUJITA ,  Einosuke SUEKUNI ,  Junji UMEMURA ,  Yuki NABETANI

IPC: F02M25/07

CPC classification number: F02M26/44 ,  F02B37/00 ,  F02D23/00 ,  Y02T10/121 ,  Y02T10/144

Abstract: Disclosed is an exhaust gas recirculation system for an engine (1), wherein at least a downstream sub-region of a region of an exhaust passage (33) upstream of a turbine wheel (52) is divided into two sub-passages (R1, R2) by a partition wall (20a, 30a) extending along an exhaust gas flow direction. A high-speed sub-passage (R2) in the two sub-passages (R1, R2) is equipped with an openable-closable exhaust variable valve (23). The exhaust variable valve (23) is configured to be controlled to open the high-speed sub-passage (R2) when an engine speed is equal to or greater than a reference speed, and close the high-speed sub-passage (R2) when the engine speed is less than the reference speed. An inlet (60a) of an EGR passage (60) on the side of the exhaust passage (33) is opened to the high-speed sub-passage (R2) at a position downstream of the exhaust variable valve (23).

Abstract translation: 公开了一种用于发动机（1）的排气再循环系统，其中在涡轮机叶轮（52）上游的排气通道（33）的区域的至少下游子区域被分成两个子通道（R1， R2）通过沿排气流动方向延伸的分隔壁（20a，30a）。 两个子通路（R1，R2）中的高速子通路（R2）配备有可开闭的排气可变阀（23）。 当发动机转速等于或大于参考速度时，排气可变阀（23）被构造成被控制以打开高速子通道（R2），并且关闭高速子通道（R2） 当发动机转速低于参考速度时。 在排气可变阀（23）的下游侧的位置，在排气通路（33）侧的EGR通路（60）的入口（60a）向高速副通路（R2）开放。

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).

公开(公告)号：US20180283303A1

公开(公告)日：2018-10-04

申请号：US15763740

申请日：2017-03-08

Applicant: MAZDA MOTOR CORPORATION

Inventor： Mitsuyuki MUROTANI ,  Takafumi NISHIO ,  Shuhei TSUJITA ,  Einosuke SUEKUNI ,  Junji UMEMURA

IPC: F02D41/12 ,  F02B37/02 ,  F02B37/22 ,  F02B37/18 ,  F02D43/00

CPC classification number: F02D41/123 ,  F02B37/02 ,  F02B37/025 ,  F02B37/18 ,  F02B37/22 ,  F02D41/0002 ,  F02D41/0007 ,  F02D41/12 ,  F02D43/00 ,  F02D2200/1002 ,  F02D2200/1004 ,  F02D2200/101 ,  F02D2200/602 ,  F02D2250/34 ,  Y02T10/144 ,  Y02T10/42

Abstract: An exhaust passage 53 includes: a first passage (high-speed passages 24b, 25b, and 26b); and a second passage (low-speed passages 24c, 25c, and 26c). A turbine housing 560 is connected to the exhaust passage 53 downstream from the collector 54. An exhaust device 100 of an engine 1 includes a valve (an exhaust variable valve 3) to open and close the first passage. A controller (an engine controller 7) closes the valve if an engine speed of the engine 1 is lower than a predetermined engine speed and opens the valve if the engine speed of the engine 1 is higher than or equal to the predetermined engine speed. The controller opens the valve even though the engine speed of the engine 1 is lower than the predetermined engine speed if performing the fuel cut control.

公开(公告)号：US20170114711A1

公开(公告)日：2017-04-27

申请号：US15319129

申请日：2015-08-10

Applicant: MAZDA MOTOR CORPORATION

Inventor： Einosuke SUEKUNI ,  Masaaki SATO ,  Junji UMEMURA ,  Shuhei TSUJITA ,  Hisayoshi YAMADA

IPC: F02B31/02 ,  F02D9/10 ,  F16K1/22 ,  F02B37/02

CPC classification number: F02B31/02 ,  F02B31/06 ,  F02B37/02 ,  F02B37/12 ,  F02D9/106 ,  F02D9/1095 ,  F16K1/223 ,  F16K1/224 ,  Y02T10/144 ,  Y02T10/146

Abstract: An opening/closing valve structure for an engine is provided with a valve body for opening and closing an intake passage or an exhaust passage of the engine; a pair of bush members mounted on axial ends of the valve body; and a shaft member axially passing through one of the bush members and projecting from the bush member by a predetermined length within one end of the valve body. Each of the bush members is mounted in such a manner that a part of the bush member is axially received in an end of the valve body and the remaining part thereof axially projects from the end of the valve body. A portion of the shaft member projecting from the one of the bush members is connected to the valve body in such a manner that relative rotation of the shaft member with respect to the valve body is disabled.

公开(公告)号：US20170058763A1

公开(公告)日：2017-03-02

申请号：US15235150

申请日：2016-08-12

Applicant: MAZDA MOTOR CORPORATION

Inventor： Einosuke SUEKUNI ,  Junji UMEMURA ,  Shuhei TSUJITA ,  Makoto MIHARA ,  Tomoaki FUJIYAMA ,  Hiroyuki HAMADA ,  Kouji HADAMA ,  Masahiro IKEDA

IPC: F02B37/18 ,  F01N13/10 ,  F02D9/04

CPC classification number: F02B37/186 ,  F01N13/10 ,  F01N13/107 ,  F01N2240/36 ,  F01N2260/10 ,  F01N2340/06 ,  F01N2390/02 ,  F02B37/02 ,  F02B37/22 ,  F02D9/04 ,  F02D41/0007 ,  Y02T10/144

Abstract: An exhaust device for an engine, interposed between an engine body, and a supercharger to be driven by a pressure of exhaust gas to be discharged from the engine body, includes a first exhaust passage and a second exhaust passage which introduce exhaust gas to the supercharger; a partition wall disposed between the first exhaust passage and the second exhaust passage, and configured to partition the first exhaust passage and the second exhaust passage from each other; and a valve disposed within the second exhaust passage, and configured to adjust the flow rate of exhaust gas flowing through the second exhaust passage. The partition wall includes a communication portion for communicating between the first exhaust passage and the second exhaust passage.

Abstract translation: 用于发动机的排气装置，其设置在发动机主体和要从发动机主体排出的排气压力下驱动的增压器之间，包括第一排气通道和将排气引入增压器的第二排气通道 ; 分隔壁，设置在所述第一排气通道和所述第二排气通道之间，并且被构造成将所述第一排气通道和所述第二排气通道彼此分隔开; 以及阀，设置在所述第二排气通道内，并且被配置为调节流过所述第二排气通道的废气的流量。 分隔壁包括用于在第一排气通道和第二排气通道之间连通的连通部分。