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    Internal combustion engine of spark-Ignition direct-injection type and fuel injection method thereof
    1.
    发明公开
    Internal combustion engine of spark-Ignition direct-injection type and fuel injection method thereof 有权
    Direkteinspritzungs-Ottomotor und Kraftstoffeinspritzverfahrendafür

    公开(公告)号：EP2105595A1

    公开(公告)日：2009-09-30

    申请号：EP09004213.6

    申请日：2009-03-24

    申请人： Mazda Motor Corporation

    发明人： Fujikawa, Tatsuya ,  Nishimoto, Toshiaki ,  Yamakawa, Masahisa ,  Shishime, Kouji ,  Sato, Kiyotaka

    IPC分类号： F02B23/10 ,  F02M61/18

    CPC分类号： F02B23/104 ,  F02B17/005 ,  F02B2023/103 ,  F02B2023/106 ,  F02B2075/125 ,  F02D13/0238 ,  F02M61/1813 ,  Y02T10/123 ,  Y02T10/125 ,  Y02T10/146

    摘要： A multi-hole injector (15) directly injects fuel into a combustion chamber (5). Intake air is introduced into the combustion chamber (5) through intake ports (6) to provide tumble flow in the combustion chamber (5). A cavity (3d) is formed in a part of the top surface of a piston (3) which is eccentric to the exhaust side. In the intake stroke, fuel injection ends in a downstroke of a piston (3). When the crank angle is 100 degrees after the top dead center in the intake stroke at which the fuel injection ends, a most downward lower spray collides with a part of the top surface (3a) of the piston (3) which ranges on the intake side from the edge on the exhaust side of the cavity. A most upward upper spray does not come into contact with a spark plug (13). Thus, the fuel injection can enhance the tumble flow to promote homogeneous dispersion of fuel-air mixture in the combustion chamber (5).

    摘要翻译： 多孔喷射器（15）直接将燃料喷射到燃烧室（5）中。 吸入空气通过进气口（6）引入燃烧室（5），以在燃烧室（5）中提供滚筒流。 在与排气侧偏心的活塞（3）的上表面的一部分中形成空腔（3d）。 在进气行程中，燃料喷射在活塞（3）的下冲程中结束。 当燃料喷射结束的进气行程中的上止点之后的曲柄角为100度时，最下面的下喷射与活塞（3）的上表面（3a）的在进气口上的一部分相撞 侧面处于空腔排气侧的边缘。 最向上的上喷雾器不与火花塞（13）接触。 因此，燃料喷射可以增强滚筒流动，以促进燃料 - 空气混合物在燃烧室（5）中的均匀分散。

    Internal combustion engine and control method therefor
    3.
    发明公开
    Internal combustion engine and control method therefor 审中-公开
    Verbrennungsmotor und Steuerverfahrendafür

    公开(公告)号：EP2138683A1

    公开(公告)日：2009-12-30

    申请号：EP09007721.5

    申请日：2009-06-10

    申请人： Mazda Motor Corporation

    发明人： Fujikawa, Tatsuya ,  Yamakawa, Masahisa ,  Nishimoto, Toshiaki ,  Yamamoto, Ryo

    IPC分类号： F02B23/10

    CPC分类号： F02B23/104 ,  F02B31/04 ,  F02B2023/085 ,  F02B2023/108 ,  Y02T10/125

    摘要： An internal combustion engine is described herein. The engine may include a combustion chamber having a pair of intake ports arranged at one side, and an exhaust port arranged at the other side. The engine may also include a fuel injector configured to inject fuel into said combustion chamber from a side of said intake ports toward a side of said exhaust port, a variable flow restrictor capable of making flow resistance of said second intake port greater than flow resistance of said first intake port, a first spark plug arranged on a ceiling of the chamber and having its spark gap in the proximity of a center portion of said ceiling, and a second spark plug arranged on said ceiling and having its spark gap which is positioned closer to said first intake port in the axial direction of said crankshaft than said first spark plug.

    摘要翻译： 这里描述了内燃机。 发动机可以包括具有设置在一侧的一对进气口的燃烧室和布置在另一侧的排气口。 发动机还可以包括燃料喷射器，该燃料喷射器被配置为从所述进气口侧朝向所述排气口的侧面将燃料喷射到所述燃烧室中，所述可变流量限制器能够使所述第二进气口的流动阻力大于流动阻力 所述第一进气口，布置在所述室的天花板上并且在所述天花板的中心部分附近具有火花隙的第一火花塞和布置在所述天花板上并具有位于更靠近的火花隙的第二火花塞 与所述第一火花塞相对于所述曲轴的轴向方向的所述第一进气口。

    Direct-injection spark-ignition engine
    4.
    发明公开
    Direct-injection spark-ignition engine 有权
    直喷式汽油发动机

    公开(公告)号：EP2146070A3

    公开(公告)日：2012-10-24

    申请号：EP09165482.2

    申请日：2009-07-15

    申请人： Mazda Motor Corporation

    发明人： Nishimoto, Toshiaki ,  Watanabe, Tomomi ,  Nakayama, Yoshiteru ,  Fujikawa, Tatsuya ,  Yamakawa, Masahisa

    IPC分类号： F02B23/10

    CPC分类号： F02B23/104 ,  F02B2023/103 ,  Y02T10/125

    摘要： Disclosed is a direct-injection spark-ignition engine designed to promote catalyst activation during cold engine operation. A fuel injection timing for a fuel injection period in an compression stroke (second fuel injection period F2) is set to allow a first fuel spray Ga injected from a first spray hole 40a to enter a cavity 34 in a piston crown surface 30, and allow a second fuel spray Gb to impinge against a region of the piston crown surface 30 located closer to an injector than the cavity 34, so as to cause the second fuel spray Gb having a lowered penetration force due to the impingement to be pulled toward the cavity 34 by a negative pressure generated in the cavity 34 as a result of passing of the first fuel spray Ga therethrough, The direct-injection spark-ignition engine can maximally hold an injected fuel spray around a spark plug to reliably stabilize a combustion state in a combustion mode for promoting catalyst activation during cold engine operation, while enhancing combustion efficiency in a homogenous combustion mode during normal engine operation.

    Internal combustion engine
    5.
    发明公开
    Internal combustion engine 有权

    公开(公告)号：EP2078835A3

    公开(公告)日：2010-11-03

    申请号：EP08172677.0

    申请日：2008-12-23

    申请人： Mazda Motor Corporation

    发明人： Nishimoto, Toshiaki ,  Yamakawa, Masahisa ,  Youso, Takashi ,  Fujikawa, Tatsuya

    IPC分类号： F02B23/10 ,  F02B23/06 ,  F02B1/02 ,  F02B3/02 ,  F02B5/00

    CPC分类号： F02B23/104 ,  F02B17/005 ,  F02B23/0675 ,  F02B2075/125 ,  Y02T10/123 ,  Y02T10/125

    摘要： Disclosed is an internal combustion engine, which has a geometric compression ratio of 13.0 or greater, and a combustion chamber (4) configured to satisfy a condition of S / V2 ≤ 0.12 (mm -1 ) when a radius r of a hypothetical sphere (IS) with its center at an ignition point (CP) of a spark plug (3) is set to satisfy a condition of V2 = 0.15 × V1, where: S (mm 2 ) is an area of an interference surface between the hypothetical sphere (IS) and an inner wall of the combustion chamber (4) in a state when a piston (30) is at its top dead center position; V1 (mm 3 ) is a volume of the combustion chamber 4 in the state when the piston (30) is at the top dead center position; and V2 (mm 3 ) is a volume of a non-interference part of the hypothetical sphere (IS) which is free of interference with the inner wall of the combustion chamber (4) when the piston (30) is at the top dead center position. The internal combustion engine of the present invention can more reliably improve fuel economy.

    Direct-injection spark-ignition engine
    6.
    发明公开
    Direct-injection spark-ignition engine 有权
    Direkteinspritzender Ottomotor

    公开(公告)号：EP2146070A2

    公开(公告)日：2010-01-20

    申请号：EP09165482.2

    申请日：2009-07-15

    申请人： Mazda Motor Corporation

    发明人： Nishimoto, Toshiaki ,  Watanabe, Tomomi ,  Nakayama, Yoshiteru ,  Fujikawa, Tatsuya ,  Yamakawa, Masahisa

    IPC分类号： F02B23/10

    CPC分类号： F02B23/104 ,  F02B2023/103 ,  Y02T10/125

    摘要： Disclosed is a direct-injection spark-ignition engine designed to promote catalyst activation during cold engine operation. A fuel injection timing for a fuel injection period in an compression stroke (second fuel injection period F2) is set to allow a first fuel spray Ga injected from a first spray hole 40a to enter a cavity 34 in a piston crown surface 30, and allow a second fuel spray Gb to impinge against a region of the piston crown surface 30 located closer to an injector than the cavity 34, so as to cause the second fuel spray Gb having a lowered penetration force due to the impingement to be pulled toward the cavity 34 by a negative pressure generated in the cavity 34 as a result of passing of the first fuel spray Ga therethrough, The direct-injection spark-ignition engine can maximally hold an injected fuel spray around a spark plug to reliably stabilize a combustion state in a combustion mode for promoting catalyst activation during cold engine operation, while enhancing combustion efficiency in a homogenous combustion mode during normal engine operation.

    摘要翻译： 公开了一种直喷式火花点火发动机，设计用于在冷发动机运行期间促进催化剂活化。 设定压缩冲程（第二燃料喷射期间F2）中的燃料喷射期间的燃料喷射正时，以使从第一喷射孔40a喷射的第一燃料喷雾Ga进入活塞冠表面30的空腔34，并允许 第二燃料喷雾Gb撞击位于比腔34更靠近喷射器的活塞冠表面30的区域，以便使由于冲击而具有较低穿透力的第二燃料喷雾Gb被拉向空腔 34由于第一燃料喷雾Ga通过而在空腔34中产生的负压。直接喷射火花点火发动机可以最大限度地将喷射的燃料喷雾保持在火花塞周围以可靠地稳定燃烧状态 用于在发动机冷运行期间促进催化剂活化的燃烧模式，同时在正常的发动机运行期间提高均匀燃烧模式下的燃烧效率。

    Internal combustion engine
    7.
    发明公开
    Internal combustion engine 有权
    内燃机

    公开(公告)号：EP2078835A2

    公开(公告)日：2009-07-15

    申请号：EP08172677.0

    申请日：2008-12-23

    申请人： Mazda Motor Corporation

    发明人： Nishimoto, Toshiaki ,  Yamakawa, Masahisa ,  Youso, Takashi ,  Fujikawa, Tatsuya

    IPC分类号： F02B23/10

    CPC分类号： F02B23/104 ,  F02B17/005 ,  F02B23/0675 ,  F02B2075/125 ,  Y02T10/123 ,  Y02T10/125

    摘要： Disclosed is an internal combustion engine, which has a geometric compression ratio of 13.0 or greater, and a combustion chamber (4) configured to satisfy a condition of S / V2 ≤ 0.12 (mm -1 ) when a radius r of a hypothetical sphere (IS) with its center at an ignition point (CP) of a spark plug (3) is set to satisfy a condition of V2 = 0.15 × V1, where: S (mm 2 ) is an area of an interference surface between the hypothetical sphere (IS) and an inner wall of the combustion chamber (4) in a state when a piston (30) is at its top dead center position; V1 (mm 3 ) is a volume of the combustion chamber 4 in the state when the piston (30) is at the top dead center position; and V2 (mm 3 ) is a volume of a non-interference part of the hypothetical sphere (IS) which is free of interference with the inner wall of the combustion chamber (4) when the piston (30) is at the top dead center position. The internal combustion engine of the present invention can more reliably improve fuel economy.

    摘要翻译： 本发明公开了一种内燃机，其具有13.0或更大的几何压缩比，以及燃烧室（4），其被构造成当假想球体的半径为r时满足S /V2≤0.12（mm-1） IS）以其中心位于火花塞（3）的点火点（CP）的方式设定为满足条件V2 = 0.15×V1，其中：S（mm2）是假想球体 IS）和燃烧室（4）的内壁之间的位置处于活塞（30）处于其上止点位置的状态下; V1（mm3）是活塞（30）位于上止点位置时的燃烧室4的容积， ，V2（mm3）是当活塞（30）处于上死点位置时不干扰燃烧室（4）内壁的假想球体（IS）的非干涉部分的体积 。 本发明的内燃机可以更可靠地提高燃料经济性。