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    Spark-ignition direct injection engine
    12.
    发明授权
    Spark-ignition direct injection engine 有权

    公开(公告)号：US09624868B2

    公开(公告)日：2017-04-18

    申请号：US13972606

    申请日：2013-08-21

    Applicant: Mazda Motor Corporation

    Inventor： Kouhei Iwai ,  Junichi Taga

    IPC: F02D43/04 ,  F02D41/00 ,  F02D41/12 ,  F02D41/30 ,  F02D41/40

    CPC classification number: F02D43/04 ,  F02D41/006 ,  F02D41/123 ,  F02D41/126 ,  F02D41/3035 ,  F02D41/401 ,  F02D2041/001 ,  F02D2250/31 ,  Y02T10/44 ,  Y02T10/47

    Abstract: A spark-ignition direct injection engine is provided. The engine includes an engine body having a cylinder, intake and exhaust valves for opening and closing intake and exhaust ports that open to the cylinder, respectively, a fuel injection valve for injecting fuel into the cylinder, a catalyst in an exhaust passage, and a controller for operating the engine body by controlling the intake and exhaust valves and the fuel injection valve. The controller performs a fuel cut by suspending the fuel injection during engine deceleration in a non-operated accelerator state, and when the engine speed drops to a predetermined speed, the controller resumes the fuel injection. During the fuel cut, the controller opens the exhaust valve on an intake stroke and then opens the intake valve, and after closing the exhaust valve and when mixture gas is blown back to the intake port, the controller closes the intake valve.

    CONTROL DEVICE OF SPARK-IGNITION ENGINE
    14.
    发明申请
    CONTROL DEVICE OF SPARK-IGNITION ENGINE 有权
    火花点火发动机的控制装置

    公开(公告)号：US20140283785A1

    公开(公告)日：2014-09-25

    申请号：US14181514

    申请日：2014-02-14

    Applicant: Mazda Motor Corporation

    Inventor： Toshiaki Takahashi ,  Junichi Taga ,  Kouhei Iwai

    IPC: F02D41/30

    CPC classification number: F02D41/3011 ,  F02D13/0207 ,  F02D41/0057 ,  F02D41/3023 ,  F02D41/3035 ,  F02D41/3064 ,  F02D41/402 ,  F02D2041/001 ,  F02D2041/3052 ,  F02P5/1504 ,  Y02T10/18 ,  Y02T10/44 ,  Y02T10/46 ,  Y02T10/47

    Abstract: A control device of a spark-ignition engine is provided. The control device includes a main body of the engine, a fuel injection valve, an ignition plug, and a controller. According to an operating state of the engine, the controller switches an ignition mode between a compression-ignition mode in which compression-ignition combustion is performed by causing the mixture gas to self-ignite and combust, and a spark-ignition mode in which spark-ignition combustion is performed by igniting the mixture gas with the ignition plug to combust. The controller switches the ignition mode from the spark-ignition mode to the compression-ignition mode by performing a transition mode in which a temperature inside the cylinder is forcibly decreased and combustion is performed.

    Abstract translation: 提供火花点火式发动机的控制装置。 控制装置包括发动机的主体，燃料喷射阀，火花塞和控制器。 根据发动机的运转状态，控制器在通过使混合气体自燃并燃烧而进行压燃式燃烧的压燃式模式和点火模式之间切换点火模式，其中火花点火模式 通过点燃与火花塞的混合气体燃烧来进行燃烧。 控制器通过执行其中气缸内的温度被强制降低并进行燃烧的过渡模式，将点火模式从火花点火模式切换到压缩点火模式。

    CONTROL DEVICE OF SPARK-IGNITION ENGINE
    15.
    发明申请
    CONTROL DEVICE OF SPARK-IGNITION ENGINE 有权
    火花点火发动机的控制装置

    公开(公告)号：US20140283784A1

    公开(公告)日：2014-09-25

    申请号：US14181505

    申请日：2014-02-14

    Applicant: Mazda Motor Corporation

    Inventor： Toshiaki Takahashi ,  Junichi Taga ,  Kouhei Iwai

    IPC: F02D41/30

    CPC classification number: F02D41/3064 ,  F02B29/0437 ,  F02D13/0207 ,  F02D13/0265 ,  F02D41/0057 ,  F02D41/3011 ,  F02D41/3023 ,  F02D41/3035 ,  F02D41/402 ,  F02D2041/001 ,  F02D2041/3052 ,  F02M26/01 ,  F02M26/25 ,  F02M26/28 ,  F02M31/04 ,  Y02T10/18 ,  Y02T10/44 ,  Y02T10/47

    Abstract: A control device of a spark-ignition engine is provided. The control device includes a main body of the engine, a fuel injection valve, an ignition plug, and a controller. According to an engine operating state, the controller switches between a compression-ignition mode in which compression-ignition combustion is performed, and a spark-ignition mode in which spark-ignition combustion is performed. The controller switches from the spark-ignition mode to the compression-ignition mode by performing in order, a first stage where an air-fuel ratio of mixture gas is set to a predetermined value and the spark-ignition combustion is performed, a second stage where the air-fuel ratio of the mixture gas is set leaner than the first stage and the compression-ignition combustion is performed, and a third stage where the air-fuel ratio of the mixture gas is set richer than the second stage and the compression-ignition combustion is performed.

    Abstract translation: 提供火花点火式发动机的控制装置。 控制装置包括发动机的主体，燃料喷射阀，火花塞和控制器。 根据发动机工作状态，控制器在进行压缩点火燃烧的压燃点火模式与进行火花点火燃烧的火花点火模式之间切换。 控制器依次执行从点火模式到压缩点火模式，将混合气体的空燃比设定为规定值，进行火花点火燃烧的第一阶段，第二阶段 其中混合气体的空燃比被设定为比第一级更稀，并且执行压燃式燃烧，并且混合气体的空燃比被设定为比第二级更富的第三级和压缩 进行燃烧。

    Control system and control method of spark ignition gasoline engine
    17.
    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
    20.
    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。

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