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    COMBUSTION SYSTEM FOR GASEOUS FUELLED INTERNAL COMBUSTION ENGINE
    1.
    发明公开
    COMBUSTION SYSTEM FOR GASEOUS FUELLED INTERNAL COMBUSTION ENGINE 审中-公开
    VERBRENNUNGSSYSTEMFÜRGASVERBRENNUNGSMOTOREN

    公开(公告)号：EP3049652A4

    公开(公告)日：2017-07-05

    申请号：EP14842221

    申请日：2014-08-27

    Applicant: WESTPORT POWER INC

    Inventor： HUANG JIAN ,  GOUDIE DALE W

    IPC: F02B43/00 ,  F02B23/06 ,  F02B23/10 ,  F02D19/02 ,  F02D19/06 ,  F02D19/10 ,  F02F3/26 ,  F02M21/02

    CPC classification number: F02B23/0624 ,  F02B23/0651 ,  F02B23/0663 ,  F02B23/0669 ,  F02B23/0672 ,  F02B23/0693 ,  F02B23/101 ,  F02B43/00 ,  F02D19/0686 ,  F02D19/0694 ,  F02D19/10 ,  F02M21/0263 ,  F02M21/0275 ,  F02M21/0284 ,  Y02T10/125 ,  Y02T10/32 ,  Y02T10/36

    Abstract: Gaseous fuel injection pressures are normally less than liquid fuel injection pressures, resulting in reduced gaseous fuel jet momentum and mixing. A combustion system for an internal combustion engine comprises an intake port and valve, a cylinder and a piston that cooperate to provide a quiescent combustion chamber. The piston includes a re-entrant type piston bowl comprising an outer periphery and a protuberance emanating from the outer periphery. A fuel injector is configured to directly introduce a gaseous fuel into the combustion chamber and an ignition source is provided for igniting the gaseous fuel. A controller actuates the fuel injector such that a gaseous fuel jet is directed towards and splits upon impacting the protuberance forming first and second fuel plumes. The first fuel plume is redirected towards a first mixing zone adjacent a cylinder head and the second fuel plume redirected towards a second mixing zone adjacent the piston bowl.

    Abstract translation: 气体燃料喷射压力通常小于液体燃料喷射压力，导致气体燃料射流动量和混合减少。 用于内燃机的燃烧系统包括进气口和阀，气缸和活塞，它们协作以提供静止燃烧室。 活塞包括凹入型活塞碗，其包括外周边和从外周边发出的隆起。 燃料喷射器构造成直接将气体燃料引入燃烧室中，并且提供点火源用于点燃气体燃料。 控制器致动燃料喷射器，使得气体燃料射流被引导朝向并且在撞击形成第一燃料羽流和第二燃料羽流的突起时分裂。 第一燃料流被重新引导至靠近汽缸盖的第一混合区，第二燃料柱被重新引导至靠近活塞碗的第二混合区。

    COMPRESSION IGNITION INTERNAL COMBUSTION ENGINE
    3.
    发明公开
    COMPRESSION IGNITION INTERNAL COMBUSTION ENGINE 审中-公开
    压缩点火内燃机

    公开(公告)号：EP3012433A1

    公开(公告)日：2016-04-27

    申请号：EP13887468.0

    申请日：2013-06-20

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： ONO, Tomoyuki

    IPC: F02B23/06 ,  F02F3/26 ,  F02M61/18

    CPC classification number: F02B23/0693 ,  F02B23/0696 ,  F02B2275/40 ,  F02F3/22 ,  Y02T10/125

    Abstract: A compression ignition internal combustion engine includes: a cylinder block and a cylinder head; a piston including a cavity that defines a combustion chamber in cooperation with the cylinder block and the cylinder head; and a nozzle for injecting fuel into the combustion chamber, wherein the cavity includes: a raised portion raised toward the nozzle; a bottom surface formed around the raised portion; and a first surface and a second surface that are continuous to the bottom surface, a depth of the first surface becomes shallower toward a radially outer side of the piston, the first surface and the second surface are provided at different positions in a circumferential direction about a central axis of the piston, a distance from the nozzle to the first surface is greater than a distance from the nozzle to the second surface, and the nozzle respectively injects first and second fuel sprays toward the first surface and the second surface, and injects a third fuel spray between the first and second fuel sprays.

    Abstract translation: 压燃式内燃机包括：气缸体和气缸盖; 活塞，其包括与所述气缸体和所述气缸盖共同限定燃烧室的空腔; 以及用于将燃料喷射到所述燃烧室中的喷嘴，其中所述空腔包括：朝向所述喷嘴竖立的凸起部分; 围绕凸起部分形成的底表面; 以及与所述底面连续的第一面和第二面，所述第一面的深度朝向所述活塞的径向外侧变浅，所述第一面和所述第二面在周向上的大致不同的位置 活塞的中心轴线，从喷嘴到第一表面的距离大于从喷嘴到第二表面的距离，并且喷嘴分别向第一表面和第二表面喷射第一和第二燃料喷雾，并且喷射 在第一和第二燃料喷雾之间的第三燃料喷雾。

    PISTON HAVING COMBUSTION BOWL SHAPED TO BALANCE COMBUSTION EFFICIENCY AND EMISSION PROPERTIES
    4.
    发明公开
    PISTON HAVING COMBUSTION BOWL SHAPED TO BALANCE COMBUSTION EFFICIENCY AND EMISSION PROPERTIES 审中-公开
    PISTONS燃烧效率和排放性能的补偿形燃烧DOME

    公开(公告)号：EP2997246A2

    公开(公告)日：2016-03-23

    申请号：EP14798281.3

    申请日：2014-05-01

    Applicant: Caterpillar Inc.

    Inventor： KARCH, Aaron ,  PIERPONT, David A. ,  LANG, Daniel ,  SUBATCH JR., James A.

    IPC: F02F3/26 ,  F02F3/28

    CPC classification number: F02B23/06 ,  F02B23/0621 ,  F02B23/0624 ,  F02B23/0669 ,  F02B23/0672 ,  F02B23/0693 ,  F02B2275/14 ,  F02D21/08 ,  F02M26/23 ,  Y02T10/123 ,  Y02T10/125

    Abstract: A piston (718, 818, 918, 1018) for a compression ignition internal combustion engine (1010) includes a piston body (720, 820, 920, 1020) having a combustion face (728, 828, 928, 1028) defining a combustion bowl (730, 830, 930, 1030), and the combustion face (728, 828, 928, 1028) including a compound bowl surface and a compound rim surface. The combustion face (728, 828, 928, 1028) is profiled to balance a combustion efficiency property of the piston (718, 818, 918, 1018) with emissions properties of the piston (718, 818, 918, 1018). A ratio of a diameter of the combustion bowl (730, 830, 930, 1030) to a diameter of the cylinder bowl bore is from 0.68 to 0.74. Other dimensional and proportional features of the piston (718, 818, 918, 1018) support low smoke and NOx production during operation.

    Abstract translation: 一种用于压缩点火式内燃机活塞包括具有燃烧面限定一燃烧碗，燃烧面包括化合物碗表面和化合物轮缘表面的活塞体。 燃烧表面成型为所述活塞的燃烧效率特性与活塞的发射性质平衡。 直径燃烧碗的与直径缸膛碗的比例为从0.68至0.74。 活塞的其它尺寸和比例特性支持操作期间低烟和NOx的产生。

    COMBUSTION CHAMBER STRUCTURE FOR INTERNAL COMBUSTION ENGINE
    5.
    发明公开
    COMBUSTION CHAMBER STRUCTURE FOR INTERNAL COMBUSTION ENGINE 有权
    燃烧室构造用于内燃机

    公开(公告)号：EP2799686A4

    公开(公告)日：2015-06-03

    申请号：EP11877575

    申请日：2011-12-16

    Applicant: TOYOTA MOTOR CO LTD

    Inventor： NISHIDA KENTARO ,  OYAGI HIROSHI

    IPC: F02B23/06 ,  F02F3/26

    CPC classification number: F02F1/00 ,  F02B23/0621 ,  F02B23/0624 ,  F02B23/069 ,  F02B23/0693 ,  F02B23/0696 ,  Y02T10/125

    Abstract: A combustion chamber structure for an internal combustion engine includes, in a piston top part, a concave portion (12) formed eccentrically with respect to a cylinder center axis (C1), and a tapered portion (20) that connects an upper end face (22) of the piston top part and a side face (18) of the concave portion (12). The tapered portion (20) is formed so that a tapered portion volume (volume of a space formed between the tapered portion (20) and an upper wall surface of the combustion chamber) in a first portion of the piston top part is greater than a tapered portion volume in a second portion that is nearer than the first portion to an eccentric direction of the concave portion (12) from the cylinder center axis C1.

    DIRECT INJECTION DIESEL ENGINES
    7.
    发明公开
    DIRECT INJECTION DIESEL ENGINES 审中-公开
    与直接柴油发动机

    公开(公告)号：EP2529094A1

    公开(公告)日：2012-12-05

    申请号：EP11702487.7

    申请日：2011-01-26

    Applicant: Ricardo Uk Limited

    Inventor： CORNWELL, Richard ,  CONICELLA, Fabrizio

    IPC: F02B23/06

    CPC classification number: F02B23/0672 ,  F02B3/06 ,  F02B23/0669 ,  F02B23/0693 ,  F02B2275/14 ,  Y02T10/123 ,  Y02T10/125

    Abstract: A piston for a four valve direct injection diesel engine defines a combustion chamber comprising a recess (10) in the piston crown, which is rotationally symmetrical about the axis of the piston in axial cross-section and is defined by a base and a side wall. A generally conical projection (5) is upstanding from the base. The recess (10) includes a lower toroidal portion (8) and an upper portion (10), whose diameter progressively increases towards the piston crown. The upper and lower portions of the recess are separated by an annular, arcuate lip (12) extending into the recess. The included angle of the conical projection (5) is between 104° and 108°, the maximum depth of the recess (10) is between 13% and 22% of the diameter of the piston, the conical projection (5) merges with the base of the recess along a circular line whose diameter is between 38% and 44% of the diameter of the piston, the diameter of the lip (12) is between 54% and 59% of the diameter of the piston, the line of minimum diameter of the lip (12) is situated at a distance between 5% and 10% of the diameter of the piston from the plane of the piston crown and the diameter of the upper portion (10) of the recess increases from 54% to 59% of the diameter of the piston at the line of minimum diameter of the lip to between 72% and 76% of the diameter of the piston at the line where the side wall of the recess intersects the plane of the piston crown.

    COMBUSTION CHAMBER STRUCTURE FOR INTERNAL COMBUSTION ENGINE
    9.
    发明授权
    COMBUSTION CHAMBER STRUCTURE FOR INTERNAL COMBUSTION ENGINE 有权
    内燃机燃烧室结构

    公开(公告)号：EP2799686B1

    公开(公告)日：2017-09-27

    申请号：EP11877575.8

    申请日：2011-12-16

    Applicant: Toyota Jidosha Kabushiki Kaisha

    Inventor： NISHIDA, Kentaro ,  OYAGI, Hiroshi

    IPC: F02B23/06 ,  F02F3/26

    CPC classification number: F02F1/00 ,  F02B23/0621 ,  F02B23/0624 ,  F02B23/069 ,  F02B23/0693 ,  F02B23/0696 ,  Y02T10/125

    Abstract: A combustion chamber structure for an internal combustion engine includes, in a piston top part, a concave portion (12) formed eccentrically with respect to a cylinder center axis (C1), and a tapered portion (20) that connects an upper end face (22) of the piston top part and a side face (18) of the concave portion (12). The tapered portion (20) is formed so that a tapered portion volume (volume of a space formed between the tapered portion (20) and an upper wall surface of the combustion chamber) in a first portion of the piston top part is greater than a tapered portion volume in a second portion that is nearer than the first portion to an eccentric direction of the concave portion (12) from the cylinder center axis C1.

    Abstract translation: 用于内燃机的燃烧室结构在活塞顶部包括相对于汽缸中心轴线（C1）偏心形成的凹部（12）和锥形部分（20），该锥形部分（20）将上端面 22）和凹部（12）的侧面（18）之间。 锥形部分20形成为使得在活塞顶部的第一部分中的锥形部分容积（在锥形部分（20）和燃烧室的上壁表面之间形成的空间的容积）大于a 在比所述第一部分更靠近所述凹部（12）的离所述缸中心轴线C1的偏心方向的第二部分中的锥部容积。

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