公开(公告)号：US20020020387A1

公开(公告)日：2002-02-21

申请号：US09983079

申请日：2001-10-23

申请人： Hitachi, Ltd.

发明人： Yoko Nakayama ,  Minoru Ohsuga ,  Toshiharu Nogi ,  Takuya Shiraishi ,  Noboru Tokuyasu ,  Yoshihiro Sukegawa ,  Yusuke Kihara

IPC分类号： F02B017/00 ,  F02B031/00 ,  F02B005/00 ,  F02B003/00

CPC分类号： F02M61/188 ,  F02B3/06 ,  F02B17/005 ,  F02B23/104 ,  F02B23/105 ,  F02B2023/106 ,  F02B2075/125 ,  F02B2275/48 ,  F02F1/4214 ,  F02F2001/245 ,  F02M61/18 ,  F02M61/1853 ,  F02M69/045 ,  Y02T10/123 ,  Y02T10/125 ,  Y02T10/146

摘要： A combustion chamber is formed using a flat piston having a low cooling loss and therein a forward tumble is generated. A fuel spray is formed by a provision of a splitter which is provided to make off-set from a center of an injection port at a tip end of a tumble atomization system fuel injector. The fuel spray is divided into a fuel spray having a strong penetration force and a fuel spray having a small penetration force. The fuel spray having the strong penetration force is injected in a vicinity of an ignition plug. Accordingly, a fuel adhesion to the piston can be reduced and further a reduction of a discharge HC and a fuel consumption can be improved.

公开(公告)号：US20020002963A1

公开(公告)日：2002-01-10

申请号：US09810602

申请日：2001-03-16

发明人： Dietmar Bertsch ,  Martin Bezner ,  Uwe Schaupp ,  Helmut Schorn ,  Jorg Sievert

IPC分类号： F02B003/00

CPC分类号： F02B17/005 ,  F02B23/101 ,  F02B2023/102 ,  F02B2075/125 ,  F02M45/08 ,  F02M61/08 ,  F02M61/18 ,  Y02T10/123 ,  Y02T10/125

摘要： A method for the formation of a combustible fuel/air mixture in a combustion chamber of a direct-injection internal combustion engine with an injection nozzle, which has a closure body includes the steps of injecting at least two partial quantities of fuel into the combustion chamber and moving the closure body of the injection nozzle into its closed position after the injection of each of the partial quantities of fuel.

摘要翻译： 在具有注射喷嘴的直喷式内燃机的燃烧室中形成可燃燃料/空气混合物的方法，其具有封闭体，该方法包括以下步骤：将至少两个部分燃料喷入燃烧室 并且在喷射每个部分燃料之后将注射喷嘴的封闭体移动到其关闭位置。

公开(公告)号：US20040237929A1

公开(公告)日：2004-12-02

申请号：US10448063

申请日：2003-05-30

申请人： Caterpillar Inc.

发明人： Mark S. Cavanagh ,  Roger L. Urven JR. ,  Keith E. Lawrence

IPC分类号： F02B003/00

CPC分类号： F02M61/182 ,  F02B1/12 ,  F02M61/1826

摘要： A direct injection fuel injector includes a nozzle tip having a plurality of passages allowing fluid communication between an inner nozzle tip surface portion and an outer nozzle tip surface portion and directly into a combustion chamber of an internal combustion engine. A first group of the passages have inner surface apertures located substantially in a first common plane. A second group of the passages have inner surface apertures located substantially in at least a second common plane substantially parallel to the first common plane. The second group has more passages than the first group.

摘要翻译： 直接喷射燃料喷射器包括具有多个通道的喷嘴末端，允许内部喷嘴前端表面部分和外部喷嘴前端表面部分之间的流体连通并直接进入内燃机的燃烧室。 第一组通道具有基本上位于第一公共平面中的内表面孔。 第二组通道具有基本上位于基本上平行于第一公共平面的至少第二公共平面中的内表面孔。 第二组比第一组有更多的段落。

公开(公告)号：US20040187804A1

公开(公告)日：2004-09-30

申请号：US10400302

申请日：2003-03-27

发明人： David L. Lehman

IPC分类号： F02B003/00

CPC分类号： F02B1/12 ,  F02B21/00 ,  F02M26/36

摘要： A method and apparatus for delivering a mixture of fuel and gas to a combustion chamber of a compression ignition engine. The method and apparatus includes compressing a gas to a pressure sufficient to initiate combustion of a fuel, delivering a stream of the gas toward the combustion chamber, injecting a quantity of fuel into the stream of gas to create a near homogeneous fuel and gas mixture, and delivering the fuel and gas mixture to the combustion chamber such that combustion occurs substantially within the combustion chamber.

摘要翻译： 一种用于将燃料和气体的混合物输送到压缩点火式发动机的燃烧室的方法和装置。 该方法和设备包括将气体压缩到足以启动燃料燃烧的压力，将气流输送到燃烧室，将一定数量的燃料喷射到气流中以产生接近均匀的燃料和气体混合物， 并且将燃料和气体混合物输送到燃烧室，使得燃烧基本上在燃烧室内发生。

公开(公告)号：US20040173181A1

公开(公告)日：2004-09-09

申请号：US10798566

申请日：2004-03-12

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Takeshi Iwahashi ,  Motoki Ohtani ,  Takuya Ikoma

IPC分类号： F02B003/00 ,  F02F001/24

CPC分类号： F02F1/242 ,  F02B23/104 ,  F02B2075/125 ,  F02M61/14 ,  F02M69/045 ,  Y02T10/123 ,  Y02T10/125

摘要： When an inner wall of a cylinder head is viewed along an axis of a cylinder, a line that passes through a center of a fuel injection port and a center of a valve opening adjacent to the injection port is defined as a first line, and a line that is perpendicular to the first line is defined as a second line. A notch is formed in a part of the inner wall that defines the injection port. Specifically, when the inner wall is divided into sections by the second line, the notch is located in the section in which the adjacent opening exists. The notch is also displaced from the first line. Therefore, a sufficient thickness of the section corresponding to the valve seats of intake and exhaust valves are easily ensured.

摘要翻译： 当沿着圆柱体的轴线观察气缸盖的内壁时，将通过燃料喷射口的中心的线和与喷射口相邻的阀开口的中心定义为第一线，并且 垂直于第一行的线被定义为第二行。 在限定注射口的内壁的一部分中形成有凹口。 具体地说，当内壁通过第二线分成多个部分时，凹口位于相邻开口所在的部分。 凹口也从第一行移开。 因此，能够容易地确保与进气门和排气门的阀座对应的部分的足够的厚度。

公开(公告)号：US20040134462A1

公开(公告)日：2004-07-15

申请号：US10746459

申请日：2003-12-23

发明人： Hans Strom ,  Lucien Koopmans

IPC分类号： F02D041/14 ,  F02B003/00

CPC分类号： F02D41/3035 ,  F02B1/12 ,  F02B23/101 ,  F02B2075/125 ,  F02D13/0203 ,  F02D13/0207 ,  F02D13/0215 ,  F02D13/0261 ,  F02D13/0265 ,  F02D23/02 ,  F02D35/021 ,  F02D35/023 ,  F02D35/027 ,  F02D35/028 ,  F02D41/0002 ,  F02D41/0007 ,  F02D41/006 ,  F02D41/146 ,  F02D41/1498 ,  F02D41/3041 ,  F02D41/3064 ,  F02D41/401 ,  F02D41/402 ,  F02D41/403 ,  F02D43/00 ,  F02D2041/001 ,  F02D2200/0406 ,  F02F3/10 ,  F02M26/01 ,  Y02T10/123 ,  Y02T10/144 ,  Y02T10/18 ,  Y02T10/44

摘要： The invention relates to an internal combustion engine comprising a fuel injector (2) for each cylinder; a fuel injection control unit (4) for controlling fuel injection quantity and a piston (5) in each cylinder whose compression action causes a mixture of air and fuel to be ignited. The engine is further provided with inlet and outlet valves (6, 7) and various sensors (12-16) for measuring various engine operating parameters. During compression ignition mode, the control unit (4) is arranged to select a null-value from a map stored in the control unit, which value is a function of engine load and engine speed, and to compare the actual null-value with the selected null-value; whereby the control unit is arranged to adjust the intake manifold pressure as a function of the difference between the said null-values in order to obtain the selected null-value. The invention further relates to a method for operating the engine and a computer readable storage device (4).

摘要翻译： 本发明涉及一种内燃机，其包括用于每个气缸的燃料喷射器（2） 用于控制燃料喷射量的燃料喷射控制单元（4）和每个气缸中的活塞（5），其压缩动作引起空气和燃料的混合物点燃。 发动机还设有入口和出口阀（6,7）和用于测量各种发动机运行参数的各种传感器（12-16）。 在压缩点火模式期间，控制单元（4）被布置成从存储在控制单元中的映射中选择λ值，该值是发动机负载和发动机转速的函数，并且将实际的λ值与 所选的λ值; 由此控制单元被布置成根据所述λ值之间的差异来调整进气歧管压力，以获得所选择的λ值。 本发明还涉及一种用于操作发动机的方法和一种计算机可读存储装置（4）。

公开(公告)号：US20040134449A1

公开(公告)日：2004-07-15

申请号：US10248349

申请日：2003-01-13

申请人： FORD GLOBAL TECHNOLOGIES, INC.

发明人： Jialin Yang

IPC分类号： F02B003/00

CPC分类号： F02D13/0207 ,  F02B1/12 ,  F02D13/0215 ,  F02D13/0265 ,  F02D13/0273 ,  F02D41/3035 ,  F02D2041/001 ,  Y02T10/128 ,  Y02T10/18

摘要： Method and system embody a valve timing strategy to control the autoignition timing of a four stroke internal combustion engine (10) operated in an HCCI mode at different engine operating conditions such as different engine speed and torque. A particular valve timing strategy varies lift timing of the intake valve (20) relative to the exhaust valve (28), or vice versa, and relative to top dead center in response to a change in engine torque, for example, to vary amount of trapped residual burned gas in the combustion chamber (12) flowing to an intake or exhaust port (16,18) and back to the combustion chamber during which the residual gas is cooled. Control of the flow of residual gas between the combustion chamber and intake or exhaust port and thus its temperature by the valve timing strategy, in turn, is used to control the temperature of the fresh air/residual gas/fuel mixture in the combustion chamber (12) and thus autoignition timing in response to a change in engine torque.

摘要翻译： 方法和系统体现了一种气门正时策略，用于控制在不同发动机运行条件（例如不同的发动机转速和转矩）下以HCCI模式操作的四冲程内燃机（10）的自燃时间。 特定的气门正时策略改变了进气门（20）相对于排气门（28）的提升时间，反之亦然，相对于上止点响应于发动机扭矩的变化，例如，改变量 在燃烧室（12）中被捕获的残余燃烧气体流到进气或排气口（16,18）并返回到燃烧室，在该燃烧室期间残留气体被冷却。 燃烧室与进气口和排气口之间的残余气体流量的控制以及气门正时策略的温度依次用于控制燃烧室中新鲜空气/残留气/燃料混合物的温度（ 12），因此响应于发动机扭矩的变化而进行自动点火定时。

公开(公告)号：US20040103877A1

公开(公告)日：2004-06-03

申请号：US10705690

申请日：2003-11-10

发明人： James J. Mccoy JR. ,  Anatoli A. Borissov

IPC分类号： F02B003/00

CPC分类号： F02M61/08 ,  F02B43/00 ,  F02M21/0269 ,  F02M21/0275 ,  F02M21/0281 ,  F02M61/1833 ,  Y02T10/32

摘要： A nozzle for delivering fuel to an engine is disclosed which is profiled with adjoining converging and diverging sections to accelerate the flow of fuel to a supersonic rate.

公开(公告)号：US20040055562A1

公开(公告)日：2004-03-25

申请号：US10439837

申请日：2003-05-16

发明人： Chris Stewart ,  Scott A. Chockley ,  Daniel R. Ibrahim ,  Keith Lawrence ,  Jay Tomaseski ,  Junru H. Azam ,  Steven Ye Tian ,  Scott F. Shafer

IPC分类号： F02B003/00

CPC分类号： F02M61/182 ,  F02B1/12 ,  F02M45/02 ,  F02M45/086 ,  F02M47/027 ,  F02M57/025 ,  F02M59/105 ,  F02M59/466 ,  F02M61/1813 ,  F02M63/0017 ,  F02M63/0045 ,  F02M2200/21 ,  F02M2200/46

摘要： A fuel injector includes a homogenous charge nozzle outlet set and a conventional nozzle outlet set controlled respectively, by first and second needle valve members. One of the needle valve members moves to an open position while the other needle valve member remains stationary for a homogeneous charge injection event. The former needle valve member stays stationary while the other needle valve member moves to an open position for a conventional injection event. One of the needle valve members is at least partially positioned in the other needle valve member. Thus, the injector can perform homogeneous charge injection events, conventional injection events, or even a mixed mode having both types of injection events in a single engine cycle.

公开(公告)号：US20040016415A1

公开(公告)日：2004-01-29

申请号：US10200505

申请日：2002-07-23

发明人： Bruno Walter ,  Bertrand Gatellier

IPC分类号： F02B003/00

CPC分类号： F02B7/02 ,  F02B1/12 ,  F02B47/08 ,  F02D41/3041 ,  F02D41/3047

摘要： The present invention relates to a method of controlling the combustion by autoignition of a homogeneous fuel mixture for an internal-combustion engine comprising a combustion chamber in which a stage of slow oxidation of said mixture occurs prior to the combustion of this mixture. According to the invention, a determined amount of fuel is fed into the combustion chamber during the slow oxidation of the mixture so as to lengthen this oxidation stage.

摘要翻译： 本发明涉及一种通过对用于内燃机的均质燃料混合物进行自燃来控制燃烧的方法，所述内燃机包括燃烧室，在该燃烧室中，在该混合物燃烧之前发生所述混合物的缓慢氧化阶段。 根据本发明，在混合物的缓慢氧化期间将确定量的燃料供给到燃烧室中，以便延长该氧化阶段。