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    Exhaust device of multiple-cylinder engine
    1.
    发明授权
    Exhaust device of multiple-cylinder engine 有权

    公开(公告)号：US10598074B2

    公开(公告)日：2020-03-24

    申请号：US15761206

    申请日：2016-11-09

    Applicant: MAZDA MOTOR CORPORATION

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

    IPC: F01N13/10 ,  F02B27/04

    Abstract: Provided is an exhaust device connected to an engine body. The exhaust device includes a plurality of independent exhaust pipes, each of which has a circular cross section, and which are connected to exhaust ports of cylinders of the engine body; and a mixing pipe having a circular cross section, connected to downstream ends of the independent exhaust pipes, and through which exhaust gas that has passed through the independent exhaust pipes flows in. The independent exhaust pipes are connected to an upstream end of the mixing pipe in such a manner that parts of internal spaces of the circular cross sections overlap each other in a predetermined section from the downstream ends of the independent exhaust pipes toward upstream, and a ratio of overlapping portions of the circular cross sections gradually increases from upstream toward downstream.

    Control system and control method of spark ignition gasoline engine
    2.
    发明授权
    Control system and control method of spark ignition gasoline engine 有权
    火花点火汽油机控制系统及控制方法

    公开(公告)号：US09470174B2

    公开(公告)日：2016-10-18

    申请号：US14346947

    申请日：2012-11-08

    Applicant: MAZDA MOTOR CORPORATION

    Inventor： Kouhei Iwai ,  Masahisa Yamakawa ,  Takashi Youso ,  Tatsuya Fujikawa ,  Tatsuya Koga

    IPC: F02D41/40 ,  F02D41/00 ,  F02D41/30 ,  F02D41/32

    CPC classification number: F02D41/401 ,  F02D41/006 ,  F02D41/0065 ,  F02D41/3029 ,  F02D41/3035 ,  F02D41/3064 ,  F02D41/32 ,  Y02T10/44 ,  Y02T10/47

    Abstract: An engine body includes a cylinder with a geometrical compression ratio of 15 or higher, and is supplied with fuel containing at least gasoline. When an operating mode of the engine body is in a high load range, a controller (i.e., a PCM 10) drives a fuel injection valve (i.e., an injector) 67 to inject the fuel at a time within a retarded period between a terminal stage of a compression stroke and an initial stage of an expansion stroke in a low speed range. The controller drives the fuel injection valve to inject the fuel in an intake stroke until an intake valve 21 is closed in a high-load high-speed range.

    Abstract translation: 发动机主体包括几何压缩比为15或更高的气缸，并且供给至少含有汽油的燃料。 当发动机主体的操作模式处于高负载范围时，控制器（即，PCM 10）驱动燃料喷射阀（即，喷射器）67，以在延迟期间的时间内在燃料喷射阀 压缩行程的阶段和低速范围内的膨胀冲程的初始阶段。 控制器驱动燃料喷射阀以在进气冲程中喷射燃料，直到进气门21在高负载高速范围内关闭。

    CONTROL SYSTEM AND CONTROL METHOD OF SPARK IGNITION GASOLINE ENGINE
    3.
    发明申请
    CONTROL SYSTEM AND CONTROL METHOD OF SPARK IGNITION GASOLINE ENGINE 有权
    火花点火汽油发动机的控制系统和控制方法

    公开(公告)号：US20140299107A1

    公开(公告)日：2014-10-09

    申请号：US14346947

    申请日：2012-11-08

    Applicant: MAZDA MOTOR CORPORATION

    Inventor： Kouhei Iwai ,  Masahisa Yamakawa ,  Takashi Youso ,  Tatsuya Fujikawa ,  Tatsuya Koga

    IPC: F02D41/32

    CPC classification number: F02D41/401 ,  F02D41/006 ,  F02D41/0065 ,  F02D41/3029 ,  F02D41/3035 ,  F02D41/3064 ,  F02D41/32 ,  Y02T10/44 ,  Y02T10/47

    Abstract: An engine body includes a cylinder with a geometrical compression ratio of 15 or higher, and is supplied with fuel containing at least gasoline. When an operating mode of the engine body is in a high load range, a controller (i.e., a PCM 10) drives a fuel injection valve (i.e., an injector) 67 to inject the fuel at a time within a retarded period between a terminal stage of a compression stroke and an initial stage of an expansion stroke in a low speed range. The controller drives the fuel injection valve to inject the fuel in an intake stroke until an intake valve 21 is closed in a high-load high-speed range.

    Abstract translation: 发动机主体包括几何压缩比为15或更高的气缸，并且供给至少含有汽油的燃料。 当发动机主体的操作模式处于高负载范围时，控制器（即，PCM 10）驱动燃料喷射阀（即，喷射器）67，以在延迟期间的时间内在燃料喷射阀 压缩行程的阶段和低速范围内的膨胀冲程的初始阶段。 控制器驱动燃料喷射阀以在进气冲程中喷射燃料，直到进气门21在高负载高速范围内关闭。

    Multi-cylinder gasoline engine
    7.
    发明授权
    Multi-cylinder gasoline engine 有权
    多缸汽油机

    公开(公告)号：US09261029B2

    公开(公告)日：2016-02-16

    申请号：US13865939

    申请日：2013-04-18

    Applicant: Mazda Motor Corporation

    Inventor： Shuhei Tsujita ,  Tatsuya Koga

    IPC: F02D9/04 ,  F02D11/00 ,  F02D13/02

    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，并且在设置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。

    Exhaust device of multi-cylinder engine
    10.
    发明授权
    Exhaust device of multi-cylinder engine 有权

    公开(公告)号：US09611777B2

    公开(公告)日：2017-04-04

    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 ,  F01N3/28 ,  F01N13/14

    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.

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