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    EXHAUST SYSTEM OF ENGINE
    2.
    发明申请
    EXHAUST SYSTEM OF ENGINE 审中-公开

    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.

    EXHAUST GAS RECIRCULATION SYSTEM FOR ENGINE
    3.
    发明申请
    EXHAUST GAS RECIRCULATION SYSTEM FOR ENGINE 审中-公开
    发动机排气回送系统

    公开(公告)号：US20160186704A1

    公开(公告)日：2016-06-30

    申请号：US14959347

    申请日：2015-12-04

    Applicant: MAZDA MOTOR CORPORATION

    Inventor： Mitsuyuki MUROTANI ,  Yasushi NAKAHARA ,  Hiroshi SUMIMOTO ,  Junji UMEMURA

    IPC: F02M35/10 ,  F02M25/07

    CPC classification number: F02M35/10222 ,  F02M26/28 ,  F02M26/30 ,  F02M26/41

    Abstract: Disclosed is an exhaust gas recirculation system provided in an engine to recirculate, to an intake manifold, a part of exhaust gas discharged from an engine body, as EGR gas. The exhaust gas recirculation system comprises: an in-head gas passage formed in a cylinder head to allow the EGR gas to pass through a position adjacent to a first coolant jacket formed in the cylinder head to allow coolant to flow therethrough an EGR cooler configured to cool the EGR gas after passing through the cylinder head via the in-head gas passage and before being introduced into the intake manifold; and a relay pipe configured to guide the EGR gas just after passing through the cylinder head, to the EGR cooler. The relay pipe is provided with a second coolant jacket for allowing coolant to flow therethrough so as to cool the EGR gas being flowing inside the relay pipe.

    Abstract translation: 公开了一种设置在发动机中的废气再循环系统，其将作为EGR气体从发动机主体排出的废气的一部分再循环到进气歧管。 排气再循环系统包括：头部气体通道，其形成在气缸盖中，以允许EGR气体通过与形成在气缸盖中的第一冷却剂套相邻的位置，以允许冷却剂流过其中，EGR冷却器配置成 在通过头内气体通道通过气缸盖并且在被引入进气歧管之前冷却EGR气体; 以及中继管，被配置为将EGR气体刚好通过气缸盖引导到EGR冷却器。 继电器管设置有第二冷却剂套，其允许冷却剂流过其中，以冷却在继电器管内流动的EGR气体。

    EXHAUST GAS RECIRCULATION SYSTEM FOR ENGINE
    4.
    发明申请
    EXHAUST GAS RECIRCULATION SYSTEM FOR ENGINE 有权
    发动机排气回送系统

    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。

    ENGINE SUPERCHARGER
    6.
    发明申请
    ENGINE SUPERCHARGER 审中-公开

    公开(公告)号：US20170241329A1

    公开(公告)日：2017-08-24

    申请号：US15422600

    申请日：2017-02-02

    Applicant: MAZDA MOTOR CORPORATION

    Inventor： Yoshiyuki UEHANE ,  Junji UMEMURA ,  Hideya HORII ,  Tomoaki FUJIYAMA

    IPC: F02B37/18 ,  F01D9/02

    CPC classification number: F02B37/183 ,  F01D9/026 ,  F01D17/146 ,  F02B37/025 ,  F05D2220/40 ,  Y02T10/144

    Abstract: Disclosed herein is a technique for providing an engine supercharger allowing an exhaust gas to efficiently act on a turbine in a wide operating range. A turbine for use in a supercharger includes a turbine housing, a turbine scroll formed inside the housing continuously with a turbine lead-in route, and a turbine wheel to turn on an axis of rotation close to a tongue portion. The turbine lead-in route is partitioned by a partition wall into first and second lead-in routes. Exhaust variable valves are provided upstream of the second lead-in route in order to change the flow rate of the exhaust gas to be introduced. When viewed in the direction in which the axis of rotation extends, a downstream end of the partition is aligned with the axis of rotation and the tongue portion.

    ENGINE SUPERCHARGER
    7.
    发明申请
    ENGINE SUPERCHARGER 审中-公开

    公开(公告)号：US20170234211A1

    公开(公告)日：2017-08-17

    申请号：US15422603

    申请日：2017-02-02

    Applicant: MAZDA MOTOR CORPORATION

    Inventor： Yoshiyuki UEHANE ,  Junji UMEMURA ,  Tomoaki FUJIYAMA ,  Koji HADAMA ,  Makoto MIHARA

    IPC: F02B37/18 ,  F01D9/02

    CPC classification number: F02B37/183 ,  F01D9/026 ,  F01D17/105 ,  F01D17/148 ,  F01D17/18 ,  F05D2220/40 ,  Y02T10/144

    Abstract: Disclosed herein is a technique for providing an engine supercharger of a reduced size allowing an exhaust gas to be introduced smoothly into a turbine scroll. A turbine for use in this supercharger includes: a turbine lead-in route, into which the exhaust gas is introduced; a turbine scroll formed continuously with the turbine lead-in route to allow the exhaust gas to swirl around inside; a turbine wheel to turn on an axis of rotation; a turbine lead-out route; a wastegate passage to bypass the exhaust gas around the turbine scroll; and a wastegate valve. The turbine lead-in route includes a throat portion having a tapered downstream portion. The wastegate passage branches from that throat portion.

    EXHAUST DEVICE FOR ENGINE
    9.
    发明申请
    EXHAUST DEVICE FOR ENGINE 审中-公开
    发动机排气装置

    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。

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