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    COMPRESSION IGNITION GASOLINE ENGINE
    11.
    发明申请
    COMPRESSION IGNITION GASOLINE ENGINE 审中-公开

    公开(公告)号：US20190390627A1

    公开(公告)日：2019-12-26

    申请号：US16466008

    申请日：2016-12-01

    Applicant: Mazda Motor Corporation

    Inventor： Takashi Youso ,  Takashi Kaminaga ,  Masahisa Yamakawa

    IPC: F02D41/30 ,  F02D41/00 ,  F02M26/01

    Abstract: A compression ignition gasoline engine includes a fuel injection valve for injecting fuel containing gasoline as a main component into a cylinder; an EGR device operative to perform high-temperature EGR of introducing burnt gas generated in the cylinder into the cylinder at a high temperature; an octane number determination unit for determining whether fuel injected from the fuel injection valve has a prescribed octane number; and a combustion control unit for controlling the fuel injection valve and the EGR device in such a way that HCCI combustion occurs within the cylinder. The combustion control unit controls the EGR device, in at least a partial load operating range in which HCCI combustion is performed, in such a way that the EGR rate increases, as compared with a case where fuel is determined to have a prescribed octane number, when fuel is determined not to have a prescribed octane number.

    COMBUSTION CHAMBER STRUCTURE FOR ENGINE
    12.
    发明申请
    COMBUSTION CHAMBER STRUCTURE FOR ENGINE 审中-公开
    发动机燃烧室结构

    公开(公告)号：US20160201631A1

    公开(公告)日：2016-07-14

    申请号：US14979364

    申请日：2015-12-22

    Applicant: Mazda Motor Corporation

    Inventor： Takaaki Nagano ,  Masahisa Yamakawa ,  Takashi Youso ,  Kazuhiro Nagatsu ,  Tatsuya Fujikawa ,  Wu Zhang ,  Takashi Kaminaga ,  Toru Miyamoto ,  Shintaro Okada ,  Yuki Hisadome

    IPC: F02M61/14 ,  F02F3/28

    CPC classification number: F02M61/14 ,  F02F3/28

    Abstract: A combustion chamber structure for an engine is provided. The combustion chamber structure includes a piston formed with a downward dented cavity at a central part of an upper surface thereof, and a fuel injector provided above the piston and on an extended line of a central axis of the piston, the fuel injector changing an injection timing of fuel on a compression stroke according to an operating state of the engine. A fuel injection angle of the fuel injector is designed to satisfy conditions in which the fuel is injected into the cavity and in which a fuel spray collision distance defined from a fuel injection position of the fuel injector to a collision position of the fuel with the cavity is longer than a breakup length defined from the fuel injection position of the fuel injector to a position where an initial breakup of the fuel occurs.

    Abstract translation: 提供了一种用于发动机的燃烧室结构。 燃烧室结构包括在其上表面的中心部分处形成有向下凹陷腔的活塞和设置在活塞上方并在活塞的中心轴线的延长线上的燃料喷射器，燃料喷射器改变喷射 根据发动机的运行状态，在压缩冲程上的燃料定时。 燃料喷射器的燃料喷射角被设计成满足将燃料喷射到空腔中并且燃料喷射碰撞距离从燃料喷射器的燃料喷射位置到燃料与空腔的碰撞位置的条件 长于从燃料喷射器的燃料喷射位置到发生燃料的初始分解的位置的分解长度。

    Spark-ignition direct injection engine
    13.
    发明授权
    Spark-ignition direct injection engine 有权
    火花点火直喷发动机

    公开(公告)号：US09145843B2

    公开(公告)日：2015-09-29

    申请号：US13954895

    申请日：2013-07-30

    Applicant: Mazda Motor Corporation

    Inventor： Kouhei Iwai ,  Masahisa Yamakawa ,  Kazuhiro Nagatsu ,  Takashi Youso ,  Keiji Araki

    IPC: F02D41/30 ,  F02D41/34 ,  F02D41/38 ,  F02P5/15 ,  F02P5/152 ,  F02D37/02 ,  F02D41/00 ,  F02D41/04

    CPC classification number: F02D41/30 ,  F02D37/02 ,  F02D41/0025 ,  F02D41/3029 ,  F02D41/3836 ,  F02D2041/389 ,  F02D2200/0611 ,  F02D2200/101 ,  F02P5/1502 ,  F02P5/152 ,  F02P5/1527 ,  Y02T10/46

    Abstract: A spark-ignition direct injection engine is provided. The engine includes an engine body, a fuel injection valve, a fuel pressure setting mechanism, an ignition plug, and a controller. Within a low engine speed operating range of a predetermined high engine load range, the fuel pressure setting mechanism sets a fuel pressure to 30 MPa or above, the fuel injection valve injects fuel between late stage of compression stroke and early stage of expansion stroke, and the ignition plug performs spark-ignition after the fuel injection completes. Within a high engine speed operating range of the high engine load range, the fuel injection valve injects fuel between intake stroke to mid-stage of compression stroke, and the ignition plug performs the spark-ignition. The ignition timing is changed according to an octane number, the changing width of the ignition timing is shorter within the low engine speed range than the high engine speed range.

    Abstract translation: 提供火花点火直喷发动机。 发动机包括发动机主体，燃料喷射阀，燃料压力设定机构，火花塞和控制器。 在预定的高发动机负载范围的低发动机转速工作范围内，燃料压力设定机构将燃料压力设定为30MPa以上，燃料喷射阀在压缩冲程的后期阶段和膨胀冲程的早期阶段之间喷射燃料， 在燃料喷射完成之后，火花塞执行火花点火。 在高发动机负载范围的高发动机转速运行范围内，燃料喷射阀将进气行程之间的燃料喷射到压缩行程的中间阶段，并且火花塞进行火花点火。 点火正时根据辛烷值改变，在低发动机转速范围内点火正时变化的宽度比发动机转速高。

    SPARK-IGNITION DIRECT INJECTION ENGINE
    14.
    发明申请
    SPARK-IGNITION DIRECT INJECTION ENGINE 有权
    火花点火直喷式发动机

    公开(公告)号：US20140060489A1

    公开(公告)日：2014-03-06

    申请号：US13954881

    申请日：2013-07-30

    Applicant: Mazda Motor Corporation

    Inventor： Kouhei Iwai ,  Masahisa Yamakawa ,  Kazuhiro Nagatsu ,  Takashi Youso

    IPC: F02D41/30

    CPC classification number: F02D41/30 ,  F02B23/101 ,  F02B29/0418 ,  F02D9/04 ,  F02D13/0207 ,  F02D13/0219 ,  F02D13/0273 ,  F02D41/0057 ,  F02D41/3017 ,  F02M26/01 ,  F02M26/25 ,  F02M26/47 ,  Y02T10/125 ,  Y02T10/14 ,  Y02T10/146 ,  Y02T10/18 ,  Y02T10/47

    Abstract: A spark-ignition direct injection engine is provided. The engine includes an engine body, a fuel injection valve, a fuel pressure setting mechanism, an ignition plug, and a controller. The controller operates the engine to perform compression-ignition combustion within a first operating range, and controls the ignition plug to operate the engine to perform spark-ignition combustion within a second operating range. Within a specific part of the first range, the controller sets the fuel pressure to 30 MPa or above, and retards the compression ignition to after a compression top dead center by controlling the injection valve to inject fuel into a cylinder in a period from a late stage of compression stroke to an early stage of expansion stroke. Below the specific part, the controller controls the fuel injection valve to inject the fuel into the cylinder in a period from intake stroke to a mid-stage of the compression stroke.

    Abstract translation: 提供火花点火直喷发动机。 发动机包括发动机主体，燃料喷射阀，燃料压力设定机构，火花塞和控制器。 控制器操作发动机以在第一操作范围内执行压燃式燃烧，并且控制火花塞以操作发动机以在第二操作范围内执行火花点火燃烧。 在第一范围的特定部分内，控制器将燃油压力设定在30MPa以上，并通过控制喷射阀将燃料喷射到气缸中，从压力上止点延迟至压缩上止点 压缩冲程的阶段到扩张中风的早期阶段。 在特定部分之下，控制器控制燃料喷射阀，以在从进气冲程到压缩冲程的中间阶段将燃料喷射到气缸中。

    CONTROL DEVICE FOR COMPRESSION SELF-IGNITION ENGINE
    15.
    发明申请
    CONTROL DEVICE FOR COMPRESSION SELF-IGNITION ENGINE 有权

    公开(公告)号：US20210172397A1

    公开(公告)日：2021-06-10

    申请号：US17074330

    申请日：2020-10-19

    Applicant: Mazda Motor Corporation

    Inventor： Naoya Ito ,  Takashi Kaminaga ,  Kenji Uchida ,  Tatsuya Fujikawa ,  Takashi Youso ,  Masahisa Yamakawa ,  Mitsuhiro Muto ,  Takuma Fujii

    IPC: F02D41/40 ,  F02D41/30 ,  F02D35/02

    Abstract: A control device for a compression self-ignition engine includes a fuel injection system and an injection controller. While the engine is operated by CI combustion under a given first condition, a first injection is carried out in which fuel is injected at a first timing in a compression stroke and at which the fuel goes toward a part radially outward of a cavity formed in a crown surface of a piston, and a second injection is suspended. While the engine is operated by the CI combustion under a second condition in which a temperature inside a combustion chamber at a close timing of an intake valve becomes lower than the first condition, at least the second injection is carried out in which the fuel is injected at a second timing later than the first timing in the compression stroke and at which the fuel goes toward the cavity.

    COMBUSTION CHAMBER STRUCTURE FOR ENGINE
    20.
    发明申请
    COMBUSTION CHAMBER STRUCTURE FOR ENGINE 审中-公开
    发动机燃烧室结构

    公开(公告)号：US20160201596A1

    公开(公告)日：2016-07-14

    申请号：US14979329

    申请日：2015-12-22

    Applicant: Mazda Motor Corporation

    Inventor： Takaaki Nagano ,  Masahisa Yamakawa ,  Takashi Youso

    IPC: F02F1/24

    CPC classification number: F02F1/242 ,  F02B23/0696 ,  F02B23/101 ,  F02B2023/085 ,  F02B2275/14 ,  Y02T10/125

    Abstract: A combustion chamber structure for an engine, wherein the structure includes a piston formed with a downward dented cavity at a central part of an upper surface thereof, a fuel injector provided above the piston and in an extension line of a central axis of the piston, and for injecting fuel toward the cavity of the piston, and ignition plugs provided above the cavity and separated from the fuel injector in radial directions of the piston. A radius of the cavity, a depth of the cavity, and each of positions of the ignition plugs are designed so that a distance by which a mixture gas containing the fuel travels from a fuel injection start timing of the fuel injector to an ignition timing of the ignition plug becomes equal to or longer than a length of a path through which the injected fuel reaches each ignition plug via the cavity.

    Abstract translation: 一种用于发动机的燃烧室结构，其中所述结构包括在其上表面的中心部分处形成有向下凹陷腔的活塞，设置在所述活塞上方和所述活塞的中心轴线的延伸线中的燃料喷射器， 并且用于将燃料朝向活塞的空腔喷射，以及设置在空腔上方并沿着活塞的径向方向与燃料喷射器分离的火花塞。 空腔的半径，空腔的深度和火花塞的每个位置被设计成使得包含燃料的混合气体的距离从燃料喷射器的燃料喷射开始正时行进到点燃正时 火花塞变得等于或长于喷射燃料经由空腔到达每个火花塞的路径的长度。

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