公开(公告)号：US20180171862A1

公开(公告)日：2018-06-21

申请号：US15579896

申请日：2016-07-13

Applicant: MAZDA MOTOR CORPORATION

Inventor： Takaaki Nagano ,  Yuji Harada

IPC: F02B23/10 ,  F02F3/26 ,  F02F3/28

CPC classification number: F02B23/101 ,  F02B23/0618 ,  F02B23/063 ,  F02B23/0669 ,  F02B23/0696 ,  F02B2023/085 ,  F02B2023/102 ,  F02D37/02 ,  F02D41/3041 ,  F02D41/401 ,  F02D2041/389 ,  F02D2700/10 ,  F02F3/26 ,  F02F3/28 ,  F02P15/08 ,  Y02T10/125 ,  Y02T10/44

Abstract: The present invention relates to a combustion chamber structure of an engine configured to inject fuel in a predetermined operation range in a period from a second half of a compression stroke until a first half of an expansion stroke to perform ignition after a compression top dead center. The combustion chamber structure includes: a piston including a cavity; a fuel injection valve provided at a middle portion of the piston; and a spark plug provided at a radially outer side of the middle portion of the piston and an upper side of the cavity. The cavity is formed by a curved surface having curvature that becomes larger as the curved surface extends toward the radially outer side. A tangential direction of an edge end portion of the curved surface intersects with a combustion chamber ceiling radially outward of the spark plug.

公开(公告)号：US20170350308A1

公开(公告)日：2017-12-07

申请号：US15170561

申请日：2016-06-01

Applicant: Ford Global Technologies, LLC

Inventor： Christopher Polonowski ,  Eric Matthew Kurtz ,  Daniel William Kantrow ,  Jianwen James Yi

IPC: F02B23/06 ,  F02M31/20

CPC classification number: F02B23/0648 ,  F02B19/1066 ,  F02B19/108 ,  F02B19/18 ,  F02B23/063 ,  F02B23/0672 ,  F02M31/20 ,  F02M67/04 ,  Y02T10/125 ,  Y02T10/126

Abstract: Systems are provided for cooling combustion chamber gasses and increasing an amount of air entrained in an injected fuel spray. In one example, a cooling passage may be included in an internal combustion engine, the cooling passage positioned exterior to a cylinder bore of the engine and coupled to the cylinder bore at a first opening and a second opening. The cooling passage may receive gasses from the cylinder bore via the first opening, and may cool the gasses as they travel through the cooling passage before returning the gasses to the cylinder bore via the second opening.

公开(公告)号：US20050229897A1

公开(公告)日：2005-10-20

申请号：US11156618

申请日：2005-06-20

Applicant: Herbert Zoller

Inventor： Herbert Zoller

IPC: F02B3/06 ,  F02B23/04 ,  F02B23/06 ,  F02F3/26 ,  F02B3/00 ,  F02B23/00

CPC classification number: F02B23/0696 ,  F02B3/06 ,  F02B23/04 ,  F02B23/0621 ,  F02B23/063 ,  F02B23/0651 ,  F02B23/0669 ,  F02B2275/14 ,  F02F3/26 ,  Y02T10/123 ,  Y02T10/125

Abstract: In an internal combustion engine with auto-ignition in which the fuel is injected directly into the combustion chamber by means of a fuel injection nozzle in the form of multiple fuel jets, wetting of the combustion chamber-side cylinder head surface is minimized by recesses formed in the cylinder head whereby some of the fuel is reflected by the piston towards the cylinder head when the piston is in a position adjacent the cylinder head and directed at least partially into the recesses formed in the cylinder head.

Abstract translation: 在具有自动点火的内燃机中，其中燃料通过多个燃料喷嘴形式的燃料喷嘴直接喷射到燃烧室中，燃烧室侧气缸盖表面的润湿被形成的凹部最小化 在气缸盖中，当活塞处于与气缸盖相邻的位置并且至少部分地引导到形成在气缸盖中的凹部中时，一些燃料被活塞反射向气缸盖。

公开(公告)号：US06557520B2

公开(公告)日：2003-05-06

申请号：US09941788

申请日：2001-08-30

Applicant: Charles E. Roberts, Jr.

Inventor： Charles E. Roberts, Jr.

IPC: F02F326

CPC classification number: F02B19/04 ,  F02B1/12 ,  F02B3/06 ,  F02B23/04 ,  F02B23/063 ,  F02B23/0639 ,  F02B2275/14 ,  Y02T10/123 ,  Y02T10/125

Abstract: A multizone combustion chamber and method of combustion in a compression-ignited reciprocating engine. The combustion chamber includes a cylinder, a cylinder head located at one end of the cylinder, a piston that reciprocates in the cylinder, an inlet that supplies a gas into the combustion chamber during an induction stroke of the piston, and an injector that supplies a fuel into the combustion chamber. The combustion chamber defines a primary chamber and at least a secondary chamber when the piston is located in a predetermined position near the cylinder head. Combustion is initiated in the primary chamber while preventing combustion from occurring in the secondary chamber. Combustion in the secondary chamber is delayed until after the piston and the cylinder head have been separated and thermodynamic communication between the fuel/gas mass in the primary chamber and the fuel/gas mass in the secondary chamber is possible.

Abstract translation: 压缩点火往复式发动机中的多区域燃烧室和燃烧方法。 燃烧室包括气缸，位于气缸一端的气缸盖，在气缸中往复运动的活塞，在活塞的吸入冲程期间将气体供应到燃烧室中的入口，以及供应气体 燃料进入燃烧室。 当活塞位于气缸盖附近的预定位置时，燃烧室限定主室和至少二级室。 在主室中开始燃烧，同时防止在二次室中发生燃烧。 辅助室中的燃烧被延迟直到活塞和气缸盖分离并且主室中的燃料/气体质量与次室中的燃料/气体质量之间的热力学连通是可能的。

公开(公告)号：US20030041836A1

公开(公告)日：2003-03-06

申请号：US09941788

申请日：2001-08-30

Applicant: SOUTHWEST RESEARCH INSTITUTE

Inventor： Charles E. Roberts JR.

IPC: F02F003/26

CPC classification number: F02B19/04 ,  F02B1/12 ,  F02B3/06 ,  F02B23/04 ,  F02B23/063 ,  F02B23/0639 ,  F02B2275/14 ,  Y02T10/123 ,  Y02T10/125

Abstract: A multizone combustion chamber and method of combustion in a compression-ignited reciprocating engine. The combustion chamber includes a cylinder, a cylinder head located at one end of the cylinder, a piston that reciprocates in the cylinder, an inlet that supplies a gas into the combustion chamber during an induction stroke of the piston, and an injector that supplies a fuel into the combustion chamber. The combustion chamber defines a primary chamber and at least a secondary chamber when the piston is located in a predetermined position near the cylinder head. Combustion is initiated in the primary chamber while preventing combustion from occurring in the secondary chamber. Combustion in the secondary chamber is delayed until after the piston and the cylinder head have been separated and thermodynamic communication between the fuel/gas mass in the primary chamber and the fuel/gas mass in the secondary chamber is possible.

公开(公告)号：US3933143A

公开(公告)日：1976-01-20

申请号：US473685

申请日：1974-05-28

Applicant: Rudolf Gurtler

Inventor： Rudolf Gurtler

IPC: F02F3/04 ,  F02B3/06 ,  F02B23/06 ,  F02F3/26 ,  F02F3/28

CPC classification number: F02B23/063 ,  F02B23/0639 ,  F02B2275/14 ,  F02B3/06 ,  F05C2201/021 ,  Y02T10/125

Abstract: A combustion engine with a piston forming the combustion chamber, means for protecting the edge of the opening of the combustion chamber against cracks being arranged so that they only take effect in the peripheral zones of the edge which are adjacent the supporting sides of the piston.

Abstract translation: 具有形成燃烧室的活塞的内燃机，用于保护燃烧室的开口的边缘的装置防止裂纹布置，使得它们仅在与活塞的支撑侧相邻的边缘的周边区域中起作用。

公开(公告)号：US20120037118A1

公开(公告)日：2012-02-16

申请号：US13153007

申请日：2011-06-03

Applicant: Gianluca CANINO ,  Marco CUNIBERTI ,  Mario DURANDO ,  Damiano MICELLI

Inventor： Gianluca CANINO ,  Marco CUNIBERTI ,  Mario DURANDO ,  Damiano MICELLI

IPC: F02B31/00 ,  F02B23/02

CPC classification number: F02B23/04 ,  F01L3/00 ,  F01L2003/255 ,  F01L2003/256 ,  F02B3/06 ,  F02B23/0621 ,  F02B23/063 ,  F02B23/0672 ,  F02B2275/14 ,  F02B2275/40 ,  F02F1/4214 ,  F02F1/4235 ,  Y02T10/125 ,  Y02T10/146

Abstract: A new architecture of a combustion chamber for a diesel engine allows arranging the engine valves according to an axis inclined with respect to the cylinder axis by an angle greater than 8°, without reducing the swirl ratio obtained at the end of the compression stage.

Abstract translation: 用于柴油发动机的燃烧室的新结构允许根据相对于气缸轴线倾斜大于8°的角度的轴线布置发动机气门，而不会降低在压缩阶段结束时获得的涡流比。

公开(公告)号：US20080314363A1

公开(公告)日：2008-12-25

申请号：US11820381

申请日：2007-06-19

Applicant: Brett Bailey

Inventor： Brett Bailey

IPC: F02F3/28

CPC classification number: F02B23/063 ,  F02B1/12 ,  F02B3/06 ,  F02B23/0639 ,  F02B2275/14 ,  F02M57/023 ,  F02M59/102 ,  F02M61/14 ,  F02M61/18 ,  F02M61/205 ,  F02M67/12 ,  Y02T10/123 ,  Y02T10/125

Abstract: Lower temperature combustion, which may lead to lower emissions, is accomplished by displacing air adjacent to a fuel injector nozzle. Initially, air is compressed in an engine cylinder by moving the engine piston toward top dead center. Air is displaced through a flow passage within the engine cylinder when the engine piston is in the vicinity of top dead center by moving an air displacement actuator. The air displacement actuator includes a member positioned in the combustion chamber that moves with respect to the engine housing and the piston when actuated. This movement causes air to flow through a flow passage, and fuel is injected into the turbulent compressed air flowing through the flow passage. The mixture of air and fuel are compression ignited in the engine cylinder after a brief ignition delay. Lower emissions may be achieved by bringing the air to the fuel prior to ignition, rather than attempting to bring the fuel to the air as in a typical compression ignition engine.

Abstract translation: 通过使靠近燃料喷射器喷嘴的空气移动来实现可能导致较低排放的较低温度的燃烧。 首先，通过将发动机活塞向上死点移动，在发动机气缸内压缩空气。 当发动机活塞通过移动空气排气致动器而在发动机活塞处于上止点附近时，空气通过发动机气缸内的流动通道移动。 空气排放致动器包括定位在燃烧室中的构件，其在致动时相对于发动机壳体和活塞移动。 这种运动使得空气流过流动通道，并且燃料被注入流过流动通道的湍流压缩空气中。 在短暂的点火延迟之后，空气和燃料的混合物在发动机气缸中被压缩点燃。 可以通过在点燃之前将空气引入燃料来实现较低的排放，而不是像在典型的压缩点火式发动机中一样将燃料带到空气中。

公开(公告)号：US20080098983A1

公开(公告)日：2008-05-01

申请号：US11588015

申请日：2006-10-26

Applicant: Brett M. Bailey

Inventor： Brett M. Bailey

IPC: F02B19/10 ,  F02F3/24

CPC classification number: F02B23/063 ,  F02B1/12 ,  F02B3/06 ,  F02B23/0633 ,  F02B23/0639 ,  F02B23/0651 ,  F02B2275/14 ,  F02D13/0269 ,  F02M67/04 ,  F02M67/12 ,  Y02T10/123 ,  Y02T10/125 ,  Y02T10/142

Abstract: Cool combustion refers to combusting fuel in a region of equivalence ratios and temperatures between a soot production region and a NOx production region. Cool combustion is achieved by compressing air in a variable volume of an internal combustion engine beyond an auto-ignition point of a fuel. The compressed air is made to flow in an airflow passage by movement of a piston in the vicinity of top dead center. Fuel is injected into the compressed air stream, auto-ignites and burns in the low emissions region between NOx and soot formation regimes.

Abstract translation: 冷燃烧是指在烟灰生产区域和NOx生产区域之间的当量比和温度区域中燃烧燃料。 通过将可变体积的内燃机中的空气压缩到燃料的自燃点以上来实现冷却燃烧。 通过活塞在上死点附近的运动使压缩空气在气流通道中流动。 燃料被注入到压缩空气流中，在NOx和烟炱形成状态之间的低排放区域中自动点燃和燃烧。

公开(公告)号：US4164915A

公开(公告)日：1979-08-21

申请号：US811784

申请日：1977-06-30

Applicant: Joseph T. Kulhavy ,  Donald G. Shelton

Inventor： Joseph T. Kulhavy ,  Donald G. Shelton

IPC: F02B1/04 ,  F02B3/06 ,  F02B19/04 ,  F02B23/06 ,  F02B69/00 ,  F02B75/12 ,  F02B3/00

CPC classification number: F02B23/0675 ,  F02B19/04 ,  F02B23/063 ,  F02B23/066 ,  F02B23/0672 ,  F02B69/00 ,  F02B1/04 ,  F02B2075/125 ,  F02B23/0627 ,  F02B3/06 ,  Y02T10/123 ,  Y02T10/125

Abstract: A method and apparatus for converting a gasoline engine to a diesel engine as disclosed herein. The method involves formation of a specifically designed piston that defines a reduced combustion chamber with a reduced chamber in the cylinder head of a conventional gasoline engine and replacing the spark plug with a fuel injector. The piston includes a circular cylinder having a substantially flat end with an integral dome extending from the flat end and having an area that is more than half the area of the cylinder. The dome has a combustion chamber defined therein and the combustion chamber is in communication with the periphery of the dome adjacent the flat end of the cylinder so that movement of the piston towards the cylinder head having a reduced chamber therein will first cause the dome to enter the reduced chamber and then have the gases from the cylinder bore forced into the reduced combustion chamber to create turbulence therein.

Abstract translation: 如本文所公开的用于将汽油发动机转化为柴油发动机的方法和装置。 该方法包括形成专门设计的活塞，该活塞在常规汽油发动机的气缸盖中限定具有减小的室的减小的燃烧室，并用燃料喷射器代替火花塞。 活塞包括具有基本上平坦的端部的圆柱体，其具有从平坦端部延伸的整体的圆顶，并且具有大于圆筒面积的一半的面积。 穹顶具有限定在其中的燃烧室，并且燃烧室与邻近圆筒的平坦端部的圆顶的周边连通，使得活塞朝向具有减小的室的气缸盖的运动将首先使圆顶进入 减压室，然后使来自气缸孔的气体被迫进入减少的燃烧室，以在其中产生湍流。