公开(公告)号：US12000329B2

公开(公告)日：2024-06-04

申请号：US17414252

申请日：2019-12-17

申请人： ASTON MARTIN LAGONDA LIMITED

发明人： Joerg Ross ,  Simone Malaguti ,  Ian Whelan ,  Davide Carpentiero ,  Mattia Lugli ,  Luke Scott

IPC分类号： F02B19/00 ,  F02B19/10 ,  F02B19/12 ,  F02B19/16

CPC分类号： F02B19/1061 ,  F02B19/12 ,  F02B19/16

摘要： The present disclosure relates to assemblies for engines such as pre-combustion chamber assemblies for spark ignition engines. It is known to provide a spark ignition engine with a pre-combustion chamber but it can be difficult to provide a system with good knock performance at high speed with high loads while still having reliable ignition at low speed with low load. In particular, at low speed with low load, there may be a relatively high percentage of exhaust gas residuals (EGR) in a pre-combustion chamber which can prevent ignition especially when the ignition timing is retarded during catalyst heating. Aspects of the disclosure aim to alleviate at least to a certain extent the problems of the prior art. According to a first aspect there is provided a pre-combustion chamber assembly for a spark ignition engine, the assembly having: an ignition chamber adapted to contain at least one electrode of a spark generator; the ignition chamber being adapted to communicate with a main engine combustion chamber via at least one pre-chamber port; wherein the ignition chamber communicates for removal therefrom of exhaust gas residuals. The exhaust gas residuals are preferably removed to a distinct storage chamber, more preferably via a transfer port.

公开(公告)号：US09803536B2

公开(公告)日：2017-10-31

申请号：US14539340

申请日：2014-11-12

申请人： DENSO CORPORATION

发明人： Jun Osaka

IPC分类号： F02B19/08 ,  F02B19/16 ,  F02B19/10

CPC分类号： F02B19/08 ,  F02B19/10 ,  F02B19/1014 ,  F02B19/1023 ,  F02B19/1061 ,  F02B19/108 ,  F02B19/165 ,  Y02T10/125

摘要： Auxiliary chamber type internal combustion engine has a main combustion chamber and an auxiliary chamber having an injection port through which the main combustion chamber communicates. The auxiliary chamber has a passage sectional area which is smoothly decreased toward the injection port. Further, the engine has a fuel injector injecting a fuel into the auxiliary chamber; an ignition plug igniting the fuel in the auxiliary chamber; and a swirl generating portion swirling a gas in the auxiliary chamber. The swirl generating portion swirls only the gas flowing into the auxiliary chamber from the main combustion chamber.

公开(公告)号：US20240271559A1

公开(公告)日：2024-08-15

申请号：US18648032

申请日：2024-04-26

申请人： ASTON MARTIN LAGONDA LIMITED

发明人： Joerg ROSS ,  Simone MALAGUTI ,  Ian WHELAN ,  Davide CARPENTIERO ,  Mattia LUGLI ,  Luke SCOTT

IPC分类号： F02B19/10 ,  F02B19/12 ,  F02B19/16

CPC分类号： F02B19/1061 ,  F02B19/12 ,  F02B19/16

摘要： The present disclosure relates to assemblies for engines such as pre-combustion chamber assemblies for spark ignition engines. In one example, a pre-combustion chamber assembly includes an ignition chamber adapted to contain at least one electrode of a spark generator. The ignition chamber being adapted to communicate with a main engine combustion chamber via a plurality of pre-chamber ports. The ignition chamber communicates for removal therefrom of exhaust gas residuals to a distinct storage chamber via at least one transfer port. The ignition chamber includes a single substantially cylindrical entrance channel leading from said pre-chamber ports in a direction towards an ignition region of the ignition chamber. The ignition region having a larger cross-section than the entrance channel.

公开(公告)号：US20130055986A1

公开(公告)日：2013-03-07

申请号：US13602148

申请日：2012-09-01

申请人： Luigi P Tozzi ,  Maria-Emmanuella Sotiropoulou

发明人： Luigi P Tozzi ,  Maria-Emmanuella Sotiropoulou

IPC分类号： F02B19/12

CPC分类号： F02B19/12 ,  F02B19/08 ,  F02B19/1061 ,  F02B19/18 ,  F02M25/10 ,  F02P9/00 ,  F02P13/00 ,  H01T13/54 ,  Y02T10/125

摘要： A prechamber spark plug may have a prechamber having a pre-determined aspect ratio and hole pattern to achieve particular combustion performance characteristics. The aspect ratio and hole pattern may induce a rotational flow of fuel-air in-filling streams inside the prechamber volume. The rotational flow of the fuel-air mixture may include both radial flow and axial flow characteristics based on the aspect ratio and hole pattern. Axial flow characteristics can include a first axial direction proximate the periphery of the rotational flow and a counter second axial direction approaching the center of the rotational flow. The radial and axial flow characteristics may further include radial air-fuel ratio stratification and/or axial air-fuel ratio stratification. The rotational flow, the radial flow and the axial flow may be adjusted by alteration of the aspect ratio and hole pattern to achieve particular combustion performance characteristics in relation to a wide variety of spark gap geometries.

公开(公告)号：US20150128898A1

公开(公告)日：2015-05-14

申请号：US14539340

申请日：2014-11-12

申请人： DENSO CORPORATION

发明人： Jun OSAKA

IPC分类号： F02B19/08

CPC分类号： F02B19/08 ,  F02B19/10 ,  F02B19/1014 ,  F02B19/1023 ,  F02B19/1061 ,  F02B19/108 ,  F02B19/165 ,  Y02T10/125

摘要： Auxiliary chamber type internal combustion engine has a main combustion chamber and an auxiliary chamber having an injection port through which the main combustion chamber communicates. The auxiliary chamber has a passage sectional area which is smoothly decreased toward the injection port. Further, the engine has a fuel injector injecting a fuel into the auxiliary chamber; an ignition plug igniting the fuel in the auxiliary chamber; and a swirl generating portion swirling a gas in the auxiliary chamber. The swirl generating portion swirls only the gas flowing into the auxiliary chamber from the main combustion chamber.

摘要翻译： 辅助室型内燃机具有主燃烧室和辅助室，其具有主燃烧室与其连通的喷射口。 辅助室具有朝向注射口平滑地减小的通道截面面积。 此外，发动机具有将燃料喷射到辅助室中的燃料喷射器; 火花塞点燃辅助室中的燃料; 以及涡流产生部分，使辅助室中的气体旋转。 漩涡产生部分仅使从主燃烧室流入辅助室的气体旋转。

公开(公告)号：US09004042B2

公开(公告)日：2015-04-14

申请号：US13602148

申请日：2012-09-01

申请人： Luigi P Tozzi ,  Maria-Emmanuella Sotiropoulou

发明人： Luigi P Tozzi ,  Maria-Emmanuella Sotiropoulou

IPC分类号： F02B19/00 ,  F02P9/00 ,  F02P13/00 ,  H01T13/54 ,  F02B19/10 ,  F02B19/12

CPC分类号： F02B19/12 ,  F02B19/08 ,  F02B19/1061 ,  F02B19/18 ,  F02M25/10 ,  F02P9/00 ,  F02P13/00 ,  H01T13/54 ,  Y02T10/125

摘要： A prechamber spark plug may have a prechamber having a pre-determined aspect ratio and hole pattern to achieve particular combustion performance characteristics. The aspect ratio and hole pattern may induce a rotational flow of fuel-air in-filling streams inside the prechamber volume. The rotational flow of the fuel-air mixture may include both radial flow and axial flow characteristics based on the aspect ratio and hole pattern. Axial flow characteristics can include a first axial direction proximate the periphery of the rotational flow and a counter second axial direction approaching the center of the rotational flow. The radial and axial flow characteristics may further include radial air-fuel ratio stratification and/or axial air-fuel ratio stratification. The rotational flow, the radial flow and the axial flow may be adjusted by alteration of the aspect ratio and hole pattern to achieve particular combustion performance characteristics in relation to a wide variety of spark gap geometries.

摘要翻译： 预燃烧器火花塞可以具有预制长宽比和孔图案的预制室，以实现特定的燃烧性能特征。 长宽比和孔图案可以引起在前房体内的燃料 - 空气填充流的旋转流动。 基于长宽比和孔图案，燃料 - 空气混合物的旋转流可以包括径向流动和轴向流动特性。 轴向流动特性可以包括靠近旋转流的周边的第一轴向方向和接近旋转流的中心的相反的第二轴向方向。 径向和轴向流动特性还可包括径向空燃比分层和/或轴向空燃比分层。 可以通过改变纵横比和孔图案来调节旋转流量，径向流动和轴向流动，以实现与各种火花隙几何形状相关的特定燃烧性能特征。

公开(公告)号：US20150176474A1

公开(公告)日：2015-06-25

申请号：US14634812

申请日：2015-02-28

申请人： Prometheus Applied Technologies, LLC

发明人： Luigi P. Tozzi ,  Maria-Emmanuella Sotiropoulou

IPC分类号： F02B19/12 ,  F02B19/08

CPC分类号： F02B19/12 ,  F02B19/08 ,  F02B19/1061 ,  F02B19/18 ,  F02M25/10 ,  F02P9/00 ,  F02P13/00 ,  H01T13/54 ,  Y02T10/125

摘要： A prechamber spark plug may have a prechamber having a pre-determined aspect ratio and hole pattern to achieve particular combustion performance characteristics. The aspect ratio and hole pattern may induce a rotational flow of fuel-air in-filling streams inside the prechamber volume. The rotational flow of the fuel-air mixture may include both radial flow and axial flow characteristics based on the aspect ratio and hole pattern. Axial flow characteristics can include a first axial direction proximate the periphery of the rotational flow and a counter second axial direction approaching the center of the rotational flow. The radial and axial flow characteristics may further include radial air-fuel ratio stratification and/or axial air-fuel ratio stratification. The rotational flow, the radial flow and the axial flow may be adjusted by alteration of the aspect ratio and hole pattern to achieve particular combustion performance characteristics in relation to a wide variety of spark gap geometries.

公开(公告)号：US4088099A

公开(公告)日：1978-05-09

申请号：US715720

申请日：1976-08-19

申请人： Dusan Gruden

发明人： Dusan Gruden

IPC分类号： F02B1/04 ,  F02B19/10 ,  F02B75/02 ,  F02B75/12 ,  F02B19/18

CPC分类号： F02B19/1061 ,  F02B19/1014 ,  F02B1/04 ,  F02B2075/027 ,  F02B2075/125 ,  Y02T10/123 ,  Y02T10/125 ,  Y10S123/04

摘要： A mixture compressing external auto-ignited four-stroke cycle internal combustion engine, with charge stratification, has the largest portion of the fuel charge supplied to the main combustion chamber as a lean fuel mixture through at least one inlet valve. The remaining portion of the charge is supplied to an auxiliary combustion chamber as a rich fuel mixture through at least one additional mixture inlet. Also provided is an ignition chamber and an auxiliary combustion chamber connected thereto through at least one opening. The opening is small compared to the size of the ignition chamber in which a sparkplug is arranged. The volume of the ignition chamber is dimensioned in relation to the volume of the auxiliary combustion chamber so that during ignition of the rich fuel mixture a stable flame zone is formed.

摘要翻译： 压缩外部自动点火的四冲程循环内燃机的混合物具有充气分层，通过至少一个入口阀具有作为贫燃料混合物供应到主燃烧室的燃料装料的最大部分。 电荷的剩余部分通过至少一个额外的混合物入口作为富燃料混合物供应到辅助燃烧室。 还提供了通过至少一个开口连接到其上的点火室和辅助燃烧室。 与设置火花塞的点火室的尺寸相比，开口小。 点火室的体积相对于辅助燃烧室的容积确定尺寸，使得在富燃料混合物着火期间形成稳定的火焰区。

公开(公告)号：US3933134A

公开(公告)日：1976-01-20

申请号：US405483

申请日：1973-10-11

申请人： Shizuo Yagi ,  Kazuo Inoue

发明人： Shizuo Yagi ,  Kazuo Inoue

IPC分类号： F02P13/00 ,  F02B1/04 ,  F02B19/10 ,  F02D21/00 ,  F02M25/07 ,  F02P21/00 ,  H01T13/08 ,  F02B19/16

CPC分类号： F02B19/1061 ,  F02B19/1014 ,  F02B1/04 ,  Y02T10/125

摘要： Reduction of NO.sub.x emissions from a four-cycle stratified charge internal combustion piston engine is accomplished by (a) spark ignition of a rich mixture in a first chamber containing residual exhaust gas, followed by (b) torch ignition of rich mixture in a second chamber under turbulent conditions, causing (c) torch ignition of a stratified charge in a lean mixture in the main combustion chamber. The result is a reduction in peak temperature in the combustion process, with consequent reduction in NO.sub.x emissions in the engine exhaust gases. Exhaust gas is not recirculated. Said first chamber, which contains residual gas from the previous combustion cycle, contains the spark gap between spark plug electrodes and the spark gap is located near a restricted connection between the first and second chambers and remote from a closed end of the first chamber. Means are provided for changing the volume of said first chamber while the engine is operating, in accordance with variations in load on the engine.

摘要翻译： 通过（a）富含混合物在含有残余废气的第一室中的火花点火，然后（b）将富混合物在第二室中点燃，从而实现四循环分层充气内燃活塞发动机的NOx排放的减少 在湍流条件下，导致（c）在主燃烧室中的贫混合物中的分层电荷的点火点火。 结果是在燃烧过程中峰值温度降低，从而导致发动机废气中的NOx排放减少。 废气不再循环。 所述第一腔室包含来自先前燃烧循环的残余气体，其中包含火花塞电极之间的火花间隙，并且所述火花隙位于所述第一和第二腔室之间的限制连接处并远离所述第一腔室的封闭端。 提供了用于根据发动机上的负载变化来改变发动机运转时的所述第一室的体积的装置。

公开(公告)号：US3919984A

公开(公告)日：1975-11-18

申请号：US43586474

申请日：1974-01-23

申请人： HONDA MOTOR CO LTD

发明人： YAGI SHIZUO ,  INOUE KAZUO

IPC分类号： F01L1/32 ,  F02B1/04 ,  F02B19/10 ,  F02B47/08 ,  F02B75/10 ,  F02F1/24 ,  F02M25/07 ,  F02P13/00 ,  F02P21/00 ,  F02B19/12

CPC分类号： F02B19/1047 ,  F02B1/04 ,  F02B19/1061 ,  Y02T10/125

摘要： A three-valve spark-ignition internal combustion piston engine has an auxiliary combustion chamber connected to each main combustion chamber through a torch nozzle. The intake valve for the auxiliary chamber is provided with a skirt for varying the effective size of the torch nozzle under controlled turning movement of the intake valve stem. The effective size of a restricted opening which connects the auxiliary chamber to an adjacent chamber containing the spark plug electrodes is also changed by means of a skirt on the auxiliary intake valve.

摘要翻译： 三阀门火花点火内燃活塞发动机具有通过炬喷嘴连接到每个主燃烧室的辅助燃烧室。 用于辅助室的进气阀设置有裙部，用于在进气阀杆的受控转动下改变割炬喷嘴的有效尺寸。 将辅助室连接到包含火花塞电极的相邻室的限制开口的有效尺寸也通过辅助进气门上的裙部而改变。