公开(公告)号：US20180258827A1

公开(公告)日：2018-09-13

申请号：US15858795

申请日：2017-12-29

Applicant: MAZDA MOTOR CORPORATION

Inventor： Taku KURAMASHI ,  Keishi KITABATAKE ,  Tamotsu TAKAMURE ,  Toshiaki KAMO

IPC: F01N13/14 ,  F01N13/10 ,  F01N3/10

CPC classification number: F01N13/14 ,  F01N3/101 ,  F01N13/008 ,  F01N13/102 ,  F01N13/143 ,  F01N2260/20 ,  F01N2340/06 ,  Y02T10/22

Abstract: A downstream-side heat insulating material which is provided at a side face of a GPF which is positioned on a downstream side, in an exhaust-gas flowing direction, of plural in-line arranged catalysts has a first opening portion and a second opening portion which are provided for attaching supporting members.

公开(公告)号：US20180258826A1

公开(公告)日：2018-09-13

申请号：US15905410

申请日：2018-02-26

Applicant: MAZDA MOTOR CORPORATION

Inventor： Taku KURAMASHI ,  Keishi KITABATAKE ,  Tamotsu TAKAMURE ,  Toshiaki KAMO

IPC: F01N13/10 ,  F01N13/00

CPC classification number: F01N13/10 ,  F01N3/10 ,  F01N13/008 ,  F01N2470/18 ,  F01N2490/00 ,  F01N2560/025 ,  F02B75/20 ,  Y02A50/2324

Abstract: An arc-shaped recess part is provided at a collective pipe of an exhaust manifold, whereby a flow of exhaust gas from one end side of cylinders is uniformized and then introduced into an exhaust-gas purifying device.

公开(公告)号：US20180258886A1

公开(公告)日：2018-09-13

申请号：US15905467

申请日：2018-02-26

Applicant: MAZDA MOTOR CORPORATION

Inventor： Taku KURAMASHI ,  Keishi KITABATAKE ,  Tamotsu TAKAMURE ,  Toshiaki KAMO

IPC: F02M26/15 ,  F01N13/08

CPC classification number: F02M26/15 ,  F01N3/021 ,  F01N3/035 ,  F01N3/101 ,  F01N13/0097 ,  F01N13/08 ,  F01N2340/02 ,  F01N2470/18 ,  F02B75/20 ,  Y02A50/2324 ,  Y02T10/22

Abstract: An exhaust-gas discharge port to discharge a main flow of exhaust gas passing through an exhaust-gas purifying device is provided at a position which is offset, on one side, from a center axis of the purifying-device body, and an EGR-gas takeout port is provided at a position which is offset, on an opposite side to the exhaust-gas discharge port, from the center axis of the purifying-device body.

公开(公告)号：US20180030875A1

公开(公告)日：2018-02-01

申请号：US15652334

申请日：2017-07-18

Applicant: MAZDA MOTOR CORPORATION

Inventor： Toshiaki KAMO ,  Hirokazu HASEGAWA ,  Haruna YANAGIDA ,  Miki NOGUCHI

IPC: F01N3/28 ,  F02B37/00 ,  F01N5/04

CPC classification number: F01N3/2892 ,  F01N5/04 ,  F01N13/1872 ,  F01N2240/20 ,  F01N2470/18 ,  F01N2490/00 ,  F02B37/00 ,  F02B67/10

Abstract: A exhaust gas purifier includes a case having a flat transverse section including a pair of facing short sides and a pair of facing long sides, and configured to house a catalytic converter, and an inlet cone including a conical portion, and configured to connect an outlet of the turbine to an inlet of the case. The conical portion includes an inclined wall inclined from a mainstream of the exhaust gas to increase the transverse section of a path of the exhaust gas. A recess recessed inward is formed in a portion corresponding to each of the long sides of the inclined wall of the conical portion.

公开(公告)号：US20200032685A1

公开(公告)日：2020-01-30

申请号：US16337265

申请日：2017-12-01

Applicant: MAZDA MOTOR CORPORATION

Inventor： Taku KURAMASHI ,  Keishi KITABATAKE ,  Tamotsu TAKAMURE ,  Toshiaki KAMO

IPC: F01N3/035 ,  F02M26/15 ,  F01N3/28 ,  F01N13/00 ,  F01N3/10 ,  B01D53/94 ,  B01D46/00

Abstract: An engine exhaust device includes: a first catalyst; a second catalyst; a connection member and an exhaust gas outlet pipe. The first catalyst has a downstream end face and the second catalyst has an upstream end face. The downstream end face and the upstream end face form a predetermined dihedral angle. The upstream end face of the second catalyst and a side surface of the first catalyst closely face each other to form an overlap. A center axis of the exhaust gas outlet pipe is offset further toward the first catalyst than a center axis of the second catalyst is.

公开(公告)号：US20190316510A1

公开(公告)日：2019-10-17

申请号：US16469926

申请日：2017-12-01

Applicant: MAZDA MOTOR CORPORATION

Inventor： Taku KURAMASHI ,  Keishi KITABATAKE ,  Tamotsu TAKAMURE ,  Toshiaki KAMO

IPC: F01N13/00 ,  B01D53/94 ,  F01N3/28 ,  F01N13/08

Abstract: An engine exhaust device includes: a first catalyst; a second catalyst; and a connecting member shaped into a tube and forming a part of the exhaust path, and connecting the first catalyst to the second catalyst. A downstream end surface of the first catalyst and an upstream end surface of the second catalyst form a dihedral angle within a range from 60 degrees to 120 degrees. A part of the upstream end surface of the second catalyst is close to and faces a part of a side surface of the first catalyst. On a cross-section including a central axis of the first catalyst and being parallel to a central axis of a second catalyst, a length of the part of the side surface of the first catalyst is longer than or equal to 10% and shorter than 50% of an entire length of the first catalyst.

公开(公告)号：US20180258822A1

公开(公告)日：2018-09-13

申请号：US15905502

申请日：2018-02-26

Applicant: MAZDA MOTOR CORPORATION

Inventor： Taku KURAMASHI ,  Keishi KITABATAKE ,  Tamotsu TAKAMURE ,  Toshiaki KAMO

IPC: F01N11/00 ,  F01N3/021 ,  F01N3/10 ,  F01N13/00 ,  F02M26/15

CPC classification number: F01N11/002 ,  F01N3/021 ,  F01N3/035 ,  F01N3/101 ,  F01N13/009 ,  F01N13/0097 ,  F01N13/08 ,  F01N2340/02 ,  F01N2470/18 ,  F02M26/15 ,  Y02T10/22

Abstract: A downstream-side exhaust-gas takeout portion of a pressure-difference detector is provided between an exhaust-gas discharge port of a downstream-side cover and an EGR-gas takeout port so that a stable exhaust-gas pressure can be taken out (detected).