公开(公告)号：US20160084139A1

公开(公告)日：2016-03-24

申请号：US14825051

申请日：2015-08-12

Applicant: Mazda Motor Corporation

Inventor： Jiro Kato ,  Tatsuya Koga ,  Shinji Sumi ,  Haruna Yanagida ,  Norihisa Murata

IPC: F01N13/10 ,  F01N3/20

CPC classification number: F01N13/10 ,  F01N3/2066 ,  F01N3/28 ,  F01N13/141 ,  Y02A50/2322

Abstract: An exhaust device of a multi-cylinder engine which controls local introduction of exhaust gas to a catalyst device and a variation between cylinders of introduction positions of the exhaust gas to the catalyst device is provided. The exhaust device is arranged so that the cylinders extend in a vehicle width direction at a vehicle front part, and an exhaust line is arranged so as to extend rearward from a rear of the engine, wherein, in sequence from an upstream side of an exhaust gas flow, four independent exhaust pipes corresponding to the cylinders, collecting pipes which collect all independent exhaust pipes, and the catalyst device are provided. The single exhaust pipe includes two bending parts and a downstream part thereof is connected so that the exhaust gas is introduced from a direction that is diagonally lateral to an inlet part of the catalyst device.

Abstract translation: 本发明提供一种多气缸发动机的排气装置，其将排气的局部引入催化剂装置以及排气到催化装置的导入位置的气缸之间的变化。 排气装置被配置为使得气缸在车辆前部沿车辆宽度方向延伸，并且排气管线被布置成从发动机的后部向后延伸，其中，从排气的上游侧开始 气流，与气缸对应的四个独立排气管，收集所有独立排气管的收集管，以及催化装置。 单个排气管包括两个弯曲部分，并且其下游部分被连接，使得废气从对于催化剂装置的入口部分的对角线侧方向引入。

公开(公告)号：US09038612B2

公开(公告)日：2015-05-26

申请号：US13888918

申请日：2013-05-07

Applicant: Mazda Motor Corporation

Inventor： Tatsuya Koga

IPC: F02M25/07

CPC classification number: F02M25/07 ,  F02M26/22 ,  F02M26/44 ,  Y02T10/121

Abstract: An exhaust gas recirculation device is provided. The device recirculates, from an exhaust system to an intake system, a part of exhaust gas from a plurality of cylinders of a multi-cylinder engine as EGR gas. The device includes a single EGR pipe extending from the exhaust system toward the intake system, an EGR manifold branching from a downstream end portion of the EGR pipe toward each cylinder, and an EGR valve for adjusting an EGR gas amount. The EGR manifold has one or more common EGR passages having a single pipe portion and branched pipe portions, and one or more independent EGR passages. Each shape of the common and independent EGR passages is set so that a communicating path in the EGR manifold communicating an arbitrary cylinder with a cylinder where combustion is performed subsequently thereto has the same volume for any cylinder combination having the adjacent combustion order.

Abstract translation: 提供废气再循环装置。 该装置从排气系统向进气系统再循环来自作为EGR气体的多缸发动机的多个气缸的废气的一部分。 该装置包括从排气系统朝向进气系统延伸的单个EGR管，从EGR管的下游端部朝向每个气缸分支的EGR汇流管和用于调节EGR气体量的EGR阀。 EGR歧管具有一个或多个具有单个管部分和分支管部分以及一个或多个独立EGR通道的公共EGR通道。 共同和独立的EGR通道的每个形状被设定为使得EGR集成管中连通任意气缸的连通路径与随后进行燃烧的气缸相通，对于具有相邻燃烧次序的任何气缸组合具有相同的体积。

公开(公告)号：US20130306041A1

公开(公告)日：2013-11-21

申请号：US13888918

申请日：2013-05-07

Applicant: MAZDA MOTOR CORPORATION

Inventor： Tatsuya Koga

IPC: F02M25/07

CPC classification number: F02M25/07 ,  F02M26/22 ,  F02M26/44 ,  Y02T10/121

Abstract: An exhaust gas recirculation device is provided. The device recirculates, from an exhaust system to an intake system, a part of exhaust gas from a plurality of cylinders of a multi-cylinder engine as EGR gas. The device includes a single EGR pipe extending from the exhaust system toward the intake system, an EGR manifold branching from a downstream end portion of the EGR pipe toward each cylinder, and an EGR valve for adjusting an EGR gas amount. The EGR manifold has one or more common EGR passages having a single pipe portion and branched pipe portions, and one or more independent EGR passages. Each shape of the common and independent EGR passages is set so that a communicating path in the EGR manifold communicating an arbitrary cylinder with a cylinder where combustion is performed subsequently thereto has the same volume for any cylinder combination having the adjacent combustion order.

Abstract translation: 提供废气再循环装置。 该装置从排气系统向进气系统再循环来自作为EGR气体的多缸发动机的多个气缸的废气的一部分。 该装置包括从排气系统朝向进气系统延伸的单个EGR管，从EGR管的下游端部朝向每个气缸分支的EGR汇流管和用于调节EGR气体量的EGR阀。 EGR歧管具有一个或多个具有单个管部分和分支管部分以及一个或多个独立EGR通道的公共EGR通道。 共同和独立的EGR通道的每个形状被设定为使得EGR集成管中连通任意气缸的连通路径与随后进行燃烧的气缸相通，对于具有相邻燃烧次序的任何气缸组合具有相同的体积。

公开(公告)号：US20130284146A1

公开(公告)日：2013-10-31

申请号：US13865939

申请日：2013-04-18

Applicant: MAZDA MOTOR CORPORATION

Inventor： Shuhei Tsujita ,  Tatsuya Koga

IPC: F02D11/00

CPC classification number: F02D11/00 ,  F02D9/04 ,  F02D13/0276 ,  Y02T10/14 ,  Y02T10/18

Abstract: A multi-cylinder gasoline engine is provided. The engine includes an engine body having a plurality of cylinders, an exhaust manifold through which exhaust gas discharged from each of the cylinders of the engine body passes, and a controller for controlling various instruments provided to the engine body and the exhaust manifold. The engine body includes a switch mechanism. The exhaust manifold includes a plurality of independent exhaust passages, a gathering section, a negative pressure generating device, bypass passages, and openable-and-closable flow switch valves. The controller controls the injector, the ignition plug, the switch mechanism, and the flow switch valve so that a CI combustion is performed within a predetermined first operating range and an SI combustion is performed within a second operating range set on a higher engine load side than the first operating range.

Abstract translation: 提供多缸汽油发动机。 发动机包括具有多个气缸的发动机主体，从发动机机体的每个气缸排出的废气通过的排气歧管，以及用于控制设置到发动机主体和排气歧管的各种仪器的控制器。 发动机主体包括开关机构。 排气歧管包括多个独立的排气通道，聚集部分，负压产生装置，旁通通道和可开启和关闭的流量切换阀。 控制器控制喷射器，火花塞，开关机构和流量切换阀，使得在预定的第一操作范围内执行CI燃烧，并且在设定在较高发动机负载侧的第二操作范围内执行SI燃烧 比第一个工作范围。