公开(公告)号：US20040182358A1

公开(公告)日：2004-09-23

申请号：US10814332

申请日：2004-04-01

Applicant: Cummins Inc.

Inventor： Wayne A. Eckerle ,  Donald W. Stanton ,  Francois Ntone

IPC: F02F003/26 ,  F02B031/00

CPC classification number: F02B23/0669 ,  F02B3/06 ,  F02B23/0621 ,  F02B23/0651 ,  F02B23/0696 ,  F02B2275/14 ,  Y02T10/123 ,  Y02T10/125

Abstract: An engine is provided which includes various precise configuration parameters, including dimensions, shape and/or relative positioning of the combustion chamber features, resulting in a combustion process minimizing NOx emissions and particulates. The combustion chamber includes a spray angle relative to an inner bowl floor angle that maximizes the amount of fuel in contact with the inner bowl, in combination with one or more of the following: a vertical distance from the tip of the piston bowl to the injection orifices; a number of injection orifices; a swirl ratio; a vertical distance from the injection orifices to an inner face of the cylinder head; a distance from the piston top surface to the cylinder head; a radius of curvature of an outer bowl section; a radius of curvature at an edge of the piston bowl; a ratio of the piston bowl diameter to the cylinder diameter; and the cylinder diameter.

公开(公告)号：US20030145823A1

公开(公告)日：2003-08-07

申请号：US10318844

申请日：2002-12-13

Inventor： Martin Wirth

IPC: F02F003/26

CPC classification number: F02F1/242 ,  F02B23/101 ,  F02B2075/125 ,  F02F1/38 ,  F02F2001/241 ,  F02F2001/245 ,  Y02T10/123 ,  Y02T10/125

Abstract: The invention relates to a spark-ignition engine having direct fuel injection, the fuel injector (2) and the spark plug (3) being arranged centrally on the upper side of the combustion chamber (1). The fuel injector produces an asymmetrical injection volume, so that the electrodes of the spark plug (3) are not directly affected by liquid fuel. The electrodes are, however, situated in a region reached by evaporating fuel.

Abstract translation: 本发明涉及一种具有直接燃料喷射的火花点火发动机，燃料喷射器（2）和火花塞（3）位于燃烧室（1）的上侧的中央。 燃料喷射器产生不对称的喷射体积，使得火花塞（3）的电极不直接受液体燃料的影响。 然而，电极位于通过蒸发燃料而达到的区域中。

公开(公告)号：US20030136372A1

公开(公告)日：2003-07-24

申请号：US10057545

申请日：2002-01-23

Inventor： Zhengbai Liu ,  Xinqun Gui

IPC: F02F003/26

CPC classification number: F02B23/0672 ,  F02B3/06 ,  Y02T10/125

Abstract: A combustion chamber assembly for use in a diesel engine includes a combustion chamber defined in a crown of a piston, the combustion chamber having a center portion, the center portion being defined at least in part by a portion of a convex sphere, the sphere having a radius and an origin, the origin of the radius lying on a piston central axis and the combustion chamber further having an outwardly radially disposed bottom margin, the bottom margin being defined in part by a portion of an annulus, the annulus having a radius and an origin. The combustion chamber further has a plurality of curved surfaces having smooth transitions between adjacent smooth surfaces, the smooth surfaces including the spherical center portion and the annular bottom margin. A piston incorporating the aforementioned combustion chamber and a method of forming the combustion chamber are further included.

Abstract translation: 用于柴油发动机的燃烧室组件包括限定在活塞顶部的燃烧室，所述燃烧室具有中心部分，所述中心部分至少部分地由凸球的一部分限定，所述球具有 半径和原点，所述半径的原点位于活塞中心轴线上，并且所述燃烧室还具有向外径向设置的底部边缘，所述底部边缘部分地由环的一部分限定，所述环具有半径和 一个起源 燃烧室还具有在相邻的光滑表面之间具有平滑过渡的多个弯曲表面，光滑表面包括球形中心部分和环形底部边缘。 还包括一个结合上述燃烧室的活塞和形成燃烧室的方法。

公开(公告)号：US20020083920A1

公开(公告)日：2002-07-04

申请号：US09991564

申请日：2001-11-16

Inventor： Gerhard Konig ,  Heinz Oing ,  Gregor Renner

IPC: F02F003/26

CPC classification number: F02M61/1813 ,  F02B1/12 ,  F02B3/06 ,  F02B23/06 ,  F02B23/0669 ,  F02B23/0672 ,  F02B2275/14 ,  F02F3/26 ,  F02M45/08 ,  F02M61/08 ,  F02M61/1826 ,  Y02T10/123 ,  Y02T10/125

Abstract: In a method for the injection of Diesel fuel into a combustion chamber of a Diesel engine by way of a fuel injection valve with a plurality of pilot and main fuel injection ports, the fuel is injected during partial load operation only by way of the pilot injection ports such that a homogeneous mixture is formed and, under full load operation, fuel is additionally injectednullafter a pausenullthrough the main fuel injection ports in such a way that a fuel jet bundle is formed in combination with the fuel jets formed by the pilot ports which is extends over the whole periphery of the combustion chamber. The fuel injection valve has the main fuel ports arranged in a piezo-actuated tappet in series in the direction of the opening movement of the tappet behind the associated pilot ports. With the piezo drive the opening stroke of the tappet can be controlled so as to provide fuel injection pauses between the pilot fuel injection and the main fuel injection.

Abstract translation: 在通过具有多个先导和主燃料喷射口的燃料喷射阀将柴油燃料喷射到柴油发动机的燃烧室中的方法中，仅在部分负载操作期间仅通过先导喷射 端口，使得形成均匀的混合物，并且在全负载操作下，另外喷射燃料 - 在暂停穿过主燃料喷射口之后，使得燃料喷射束与由燃料喷射器形成的燃料喷嘴组合形成 导向口在燃烧室的整个周边上延伸。 燃料喷射阀具有主要燃料端口，其布置在压电致动挺杆中，在相关联的先导端口后面的挺杆的打开运动的方向上串联。 利用压电驱动，可以控制挺杆的打开行程，以便在先导燃料喷射和主燃料喷射之间提供燃料喷射停顿。

公开(公告)号：US20030221657A1

公开(公告)日：2003-12-04

申请号：US10423482

申请日：2003-04-25

Applicant: ECOLOGIC MOTOR S.A.

Inventor： Jose Franklin Sananes

IPC: F02F003/26

CPC classification number: F02B23/0639 ,  F02B3/06 ,  F02B23/02 ,  F02B23/08 ,  F02B41/00 ,  F02B2275/14 ,  F02F2001/247 ,  Y02T10/125 ,  Y02T10/14

Abstract: An internal combustion engine with a new combustion chamber comprising: short-flap pistons having an absolutely flat head; a cylinder cover having an absolutely flat bottom surface, and a distance nullXnull between the piston head and the bottom surface of the cylinder cover when the piston is at its TDC, which forms the combustion chamber, i.e., the space comprised between the piston's top surface or piston head, the walls of the cylinder, and the bottom flat surface of the cylinder cover.

Abstract translation: 具有新燃烧室的内燃机包括：具有绝对平坦头部的短襟翼活塞; 具有绝对平坦的底表面的气缸盖，以及当活塞处于其TDC时活塞头和气缸盖的底表面之间的距离“X”，其形成燃烧室，即，活塞 顶面或活塞头，气缸的壁和气缸盖的底部平坦表面。

公开(公告)号：US20030140890A1

公开(公告)日：2003-07-31

申请号：US10060663

申请日：2002-01-30

Inventor： Zhengbai Liu ,  Xinqun Gui

IPC: F02F003/26

CPC classification number: F02B23/0672 ,  F02B3/06 ,  Y02T10/125

Abstract: A combustion chamber assembly for use in a diesel engine includes a combustion chamber being defined in a crown of a piston, the combustion chamber having a center portion, the center portion being defined at least in part by a portion of a convex sphere to define a post, the sphere having a radius and an origin, the origin of the radius lying on a combustion chamber central axis and the combustion chamber further having an outwardly radially disposed bottom margin, the bottom margin being defined in part by a portion of a sphere, the sphere being concave and having an origin and a radius. The combustion chamber has more than two spherical surfaces having smooth annular transitions between adjacent spherical surfaces, the spherical surfaces including the spherical center portion and the spherical bottom margin. A piston and a method of forming a combustion chamber are further included.

Abstract translation: 用于柴油发动机的燃烧室组件包括限定在活塞顶部的燃烧室，所述燃烧室具有中心部分，所述中心部分至少部分地由凸球的一部分限定， 柱体，球体具有半径和原点，半径的原点位于燃烧室中心轴线上，并且燃烧室还具有向外径向设置的底部边缘，底部边缘部分地由球体的一部分限定， 球体是凹的并具有起点和半径。 燃烧室具有多于两个球面，在相邻球面之间具有平滑的环形过渡，球面包括球形中心部分和球形底部边缘。 还包括活塞和形成燃烧室的方法。

公开(公告)号：US20030127068A1

公开(公告)日：2003-07-10

申请号：US10327924

申请日：2002-12-26

Applicant: Nissan Motor Co., Ltd.

Inventor： Koji Hiraya ,  Tomonori Urushihara

IPC: F02F003/26

CPC classification number: F02B23/101 ,  F02B23/104 ,  F02B2023/103 ,  F02B2075/125 ,  F02B2275/18 ,  F02F3/26 ,  Y02T10/123 ,  Y02T10/125

Abstract: A direct fuel injection engine has a fuel injection valve that injects fuel toward a cavity formed in a top of a piston, and a spark plug that ignites the fuel-air mixture resulting from the fuel injection. The direct fuel injection engine is configured to strengthen the penetration of the fuel streams, to improve the directionality of the fuel streams and to stably form an agglomerate fuel-air mixture close to the spark plug. The cavity preferably has a bottom surface, a curved surface, and a flat surface. In a plan view taken along the center axis of the engine cylinder, cavity C is shaped like an ellipse whose foci are located at the tip of fuel injection valve and the spark discharge gap of spark plug, respectively. The fuel injection valve has a plurality of injection vents that spray solid-core fuel streams.

Abstract translation: 直接燃料喷射发动机具有燃料喷射阀，其向形成在活塞顶部的空腔喷射燃料，以及火花塞，其点燃由燃料喷射产生的燃料 - 空气混合物。 直接燃料喷射发动机被构造成加强燃料流的穿透，以改善燃料流的方向性并且稳定地形成靠近火花塞的附聚燃料 - 空气混合物。 空腔优选具有底面，弯曲表面和平坦表面。 在沿着发动机气缸的中心轴线的平面图中，空腔C的形状分别形成为其焦点位于燃料喷射阀的末端和火花塞的火花放电间隙的椭圆。 燃料喷射阀具有喷射固体燃料流的多个喷射孔。

公开(公告)号：US20020038645A1

公开(公告)日：2002-04-04

申请号：US09967916

申请日：2001-10-02

Inventor： Franz Chmela ,  Janos Csato ,  Michael Glensvig

IPC: F02F003/26

CPC classification number: F02D41/3041 ,  F02B1/12 ,  F02B3/06 ,  F02B23/101 ,  F02B23/105 ,  F02B2023/102 ,  F02D41/3029 ,  F02F1/242 ,  Y02T10/125

Abstract: The invention relates to a method for operating an internal combustion engine operated with a self-ignitable fuel, with an approximately homogeneous fuel-air mixture being produced in the combustion chamber in the self-ignition ranges (CI), a high compression ratio suitable for a self-ignition of the fuel being provided and the combustion occurring in the self-ignition ranges (CI) predominantly by self-ignition. In order to control the start of combustion in the self-ignition range (CI) in the easiest possible way it is provided that in the self-ignition range (CI) the pressure and/or temperature of the homogeneous fuel-air mixture are set in such a way, preferably depending on the charge composition and/or charge temperature, that the self-ignition would be achieved only after the actually desired start of combustion in the zone of the upper dead center and the combustion of the homogeneous fuel-air mixture is initiated locally in the self-ignition range (CI) by an external energy impulse.

Abstract translation: 本发明涉及一种用于操作具有自燃燃料的内燃机的方法，其中在自燃范围（CI）中在燃烧室中产生近似均匀的燃料 - 空气混合物，适用于 所提供的燃料的自点火和主要通过自燃的自燃范围（CI）中发生的燃烧。 为了以最简单的方式控制自燃范围（CI）中的燃烧开始，条件是在自燃范围（CI）中，设定均匀的燃料 - 空气混合物的压力和/或温度 以这样的方式，优选地取决于电荷组成和/或充电温度，仅在在上止点的区域中实际期望的开始燃烧和均质燃料空气的燃烧之后才能实现自燃 混合物在外部能量脉冲的自燃范围（CI）中局部起动。

公开(公告)号：US20040177828A1

公开(公告)日：2004-09-16

申请号：US10387732

申请日：2003-03-13

Inventor： Zhengbai Liu

IPC: F02F003/26 ,  F02B023/06

CPC classification number: F02F3/26 ,  F02B23/0672

Abstract: A combustion chamber assembly for use in a piston of a diesel engine includes a combustion chamber being defined intersecting a crown of the piston, the combustion chamber being substantially defined by three surfaces, a post being in part a spherical surface, a bottom and first side portion being an annular surface, and a second side portion being a taper surface, the combustion chamber having at least three reentrancies. A piston incorporating the combustion chamber assembly and a method of forming the combustion chamber are further included.

Abstract translation: 用于柴油发动机的活塞的燃烧室组件包括限定与活塞冠部相交的燃烧室，燃烧室基本上由三个表面限定，柱部分为球形表面，底部和第一侧 部分是环形表面，第二侧部是锥形表面，所述燃烧室具有至少三个重新进入。 还包括并入燃烧室组件的活塞和形成燃烧室的方法。

公开(公告)号：US20040094117A1

公开(公告)日：2004-05-20

申请号：US10299088

申请日：2002-11-19

Applicant: Caterpillar, Inc.

Inventor： Stanley Kevin Widener ,  David Pratt Branyon ,  Barry Edward Westmoreland

IPC: F02F003/26 ,  F02B015/00

CPC classification number: F02D13/0276 ,  F01L1/46 ,  F01L13/065 ,  F01L2760/004 ,  F02B23/0672 ,  F02B29/0493 ,  F02B29/086 ,  F02D13/0203 ,  F02D13/0269 ,  F02D21/08 ,  F02F1/4214 ,  F02M26/01 ,  F02M26/02 ,  F02M26/20 ,  F02M26/22 ,  F02M26/41 ,  F02M26/43 ,  Y02T10/142 ,  Y02T10/18

Abstract: A valve system for an engine is provided. The valve system includes a cylinder head that defines an intake passageway, an exhaust passageway, and an auxiliary passageway. The auxiliary passageway includes a first connection with the intake passageway and a second connection with the exhaust passageway. A control valve is disposed in the auxiliary passageway. The control valve is moveable between a first position where the control valve blocks the first connection between the auxiliary passageway and the intake passageway and a second position where control valve blocks the second connection between the auxiliary passageway and the exhaust passageway.

Abstract translation: 提供一种用于发动机的阀系统。 阀系统包括限定进气通道的气缸盖，排气通道和辅助通道。 辅助通道包括与进气通道的第一连接和与排气通道的第二连接。 控制阀设置在辅助通道中。 控制阀可以在控制阀阻塞辅助通道和进气通道之间的第一连接的第一位置和控制阀阻塞辅助通道和排气通道之间的第二连接的第二位置之间移动。