公开(公告)号：US5379732A

公开(公告)日：1995-01-10

申请号：US151177

申请日：1993-11-12

申请人： Nagesh S. Mavinahally ,  Pushpalatha S. Mavinahally

发明人： Nagesh S. Mavinahally ,  Pushpalatha S. Mavinahally

IPC分类号： F01P1/04 ,  F02B25/22 ,  F02B75/02 ,  F02D9/02 ,  F02F1/22

CPC分类号： F02B25/22 ,  F01P1/04 ,  F02F1/22 ,  F02B2075/025 ,  F02D2009/0291

摘要： A variable volume transfer duct for maintaining an optimum volume of buffer gas in the transfer duct of a two-stroke engine during operation in order to minimize short circuit loss of fresh charge at all load levels during engine operation. The variable volume transfer duct that has two pieces, a top and a bottom duct wherein the bottom duct is aligned with and slidably disposed within the upper duct. Control means are provided for raising and lowering of the bottom duct to vary the transfer duct volume accordingly. A control means controls recirculates exhaust gas, or the secondary air, as buffer gas that fills the top of the transfer passage and regulates the buffer gas according to engine load conditions such that it provides a larger amount at higher loads and a lesser quantity at lighter loads.

摘要翻译： 一种可变体积输送管道，用于在运行期间保持二冲程发动机的输送管道中缓冲气体的最佳体积，以便在发动机运转期间使所有负载水平下的新鲜电荷的短路损失最小化。 具有两个部件的可变体积传送管道，一个顶部管道和一个底部管道，其中底部管道与上部管道对齐并且可滑动地设置在上部管道内。 提供控制装置用于升高和降低底部管道以相应地改变输送管道体积。 控制装置控制再循环废气或二次空气作为填充输送通道顶部的缓冲气体，并根据发动机负载条件调节缓冲气体，使得其在较高负载下提供较大量，在较轻的位置提供较少的量 负载

公开(公告)号：US06513465B2

公开(公告)日：2003-02-04

申请号：US09847578

申请日：2001-05-02

申请人： Takashi Fukuoka ,  Mitsujiro Mochizuka ,  Shiro Yamaguchi

发明人： Takashi Fukuoka ,  Mitsujiro Mochizuka ,  Shiro Yamaguchi

IPC分类号： F02B3304

CPC分类号： F02B31/04 ,  F02B25/16 ,  F02B33/04 ,  F02B33/44 ,  F02B63/02 ,  F02B2075/025 ,  F02D2009/0291 ,  F02F1/22 ,  Y02T10/146

摘要： A two-stroke internal combustion engine that emits exhaust gases with reduced amounts of noxious components, such as HC, and has less blow-by of unburned air-fuel mixture has a crank chamber located below a piston and a combustion actuating chamber located above the piston. Either one pair or two pairs of scavenging passageways communicate the crank chamber with the combustion actuating chamber, the scavenging passageways of the one pair or of each of the two pairs being disposed symmetrically with respect to a plane that bisects an exhaust port so as to form a Schnürle-type scavenging system. Each scavenging passageway is throttled at a location proximate to a scavenging inlet port thereof.

公开(公告)号：US5205245A

公开(公告)日：1993-04-27

申请号：US707642

申请日：1991-05-30

申请人： Robert Flack ,  David Thornhill

发明人： Robert Flack ,  David Thornhill

IPC分类号： F02B25/16 ,  F02B25/14 ,  F02B25/20 ,  F02B75/02 ,  F02D9/02 ,  F02F1/22

CPC分类号： F02B25/20 ,  F02B25/14 ,  F02F1/22 ,  F02B2075/025 ,  F02D2009/0291

摘要： A two stroke internal combustion engine includes a cylinder with a piston slidably sealed in the cylinder, a plurality of transfer ports open into the cylinder and at least one exhaust port leads from the cylinder, the transfer ports are connected to a common inlet manifold and a common valve member is provided to regulate the flow of air from the inlet manifold to the transfer ports and to vary the flow of air through one transfer port relative to the flow of air through at least one other transfer port.

公开(公告)号：US5586525A

公开(公告)日：1996-12-24

申请号：US583043

申请日：1996-01-17

申请人： Jean M. Masse

发明人： Jean M. Masse

IPC分类号： F01L7/12 ,  F02B25/14 ,  F02B25/22 ,  F02B75/02 ,  F02D9/02 ,  F02B25/20

CPC分类号： F02B25/14 ,  F02B2075/025 ,  F02B33/04 ,  F02D2009/0291

摘要： Air/fuel mixture supply device for a two-stroke internal-combustion engine, of the type with scavenging by compressed air in the casing, comprising at least one cylinder, a piston capable of reciprocating motion in the cylinder, and a scavenging-air compression casing, the cylinder comprising at least one exhaust port, at least one transfer port and a port for introduction of an air/fuel mixture.A rotary closure member (19) driven in synchronism with the rotation of the engine is associated with the port (16) for introduction of the air/fuel mixture into the combustion chamber, this closure member being placed in an air reservoir (14) fed with air under a pressure greater than the pressure in the combustion chamber (10) after opening of the exhaust port (11).

摘要翻译： PCT No.PCT / FR94 / 00972 Sec。 371日期1996年1月17日 102（e）日期1996年1月17日PCT 1994年8月2日PCT PCT。 第WO95 / 04212号公报 日期1995年2月9日用于二冲程内燃机的空气/燃料混合物供应装置，其类型由壳体中的压缩空气清除，包括至少一个气缸，能够在气缸中往复运动的活塞，以及 清空空气压缩壳体，所述气缸包括至少一个排气口，至少一个输送口和用于引入空气/燃料混合物的端口。 与发动机的旋转同步地驱动的旋转关闭构件（19）与用于将空气/燃料混合物引入燃烧室的端口（16）相关联，该关闭构件被放置在供给的空气储存器（14）中 在打开排气口（11）之后，在比燃烧室（10）中的压力大的压力下具有空气。

公开(公告)号：US5072699A

公开(公告)日：1991-12-17

申请号：US468286

申请日：1990-01-22

申请人： Pao C. Pien

发明人： Pao C. Pien

IPC分类号： F01M1/04 ,  F02B1/04 ,  F02B25/00 ,  F02B25/22 ,  F02B29/00 ,  F02B33/04 ,  F02B33/30 ,  F02B33/44 ,  F02B75/02 ,  F02D9/02 ,  F02D13/02 ,  F02F1/36

CPC分类号： F02D13/0249 ,  F01M1/04 ,  F02B25/00 ,  F02B25/22 ,  F02B29/00 ,  F02B33/04 ,  F02B33/30 ,  F02B33/44 ,  F02D13/0284 ,  F02F1/365 ,  F02B1/04 ,  F02B2075/025 ,  F02D2009/0291 ,  Y02T10/146 ,  Y02T10/18

摘要： A cylinder block includes a cylinder with a piston therein and a main crankcase. A combustion space is disposed above the piston and a compression space is disposed below the piston. An exterior passage including a reservoir transfers compressed air from the compression space to the combustion space. A first valve permits one-way flow of ambient air into the compression space, and a second valve permits one-way flow from the compression space into the passage so that the compression process is independent of the combustion process. In one embodiment, the exterior passage includes a first passage for air and a second passage for fuel-air mixture for selective communication with the combustion chamber. In another embodiment, an inner crankcase is disposed within and spaced from the main crankcase and incorporates the first and second valves.

摘要翻译： 气缸体包括其中具有活塞的气缸和主曲轴箱。 燃烧空间设置在活塞的上方，压缩空间设置在活塞的下方。 包括储存器的外部通道将压缩空气从压缩空间传递到燃烧空间。 第一阀允许环境空气单向流入压缩空间，并且第二阀允许从压缩空间进入通道的单向流动，使得压缩过程独立于燃烧过程。 在一个实施例中，外部通道包括用于空气的第一通道和用于与燃烧室选择性连通的燃料 - 空气混合物的第二通道。 在另一个实施例中，内部曲轴箱设置在主曲轴箱内并与主曲轴箱隔开并且包括第一和第二阀。

公开(公告)号：US5285753A

公开(公告)日：1994-02-15

申请号：US863030

申请日：1992-04-03

申请人： Pierre Duret ,  Gaetan Monnier ,  Thierry Colliou

发明人： Pierre Duret ,  Gaetan Monnier ,  Thierry Colliou

IPC分类号： F02B25/20 ,  F01L7/12 ,  F02B25/14 ,  F02B75/02 ,  F02D9/02 ,  F02B25/16

CPC分类号： F02B25/14 ,  F01L7/12 ,  F02B2075/025 ,  F02B2275/14 ,  F02D2009/0291

摘要： A two-stroke engine which includes a cylinder in which a piston moves with a device being provided for allowing the feeding of a charge under pressure to the cylinder and at least two inlet ports in a well of the cylinder. The engine includes a device for selectively sealing a section of flow of the inlet port in accordance with at least one working parameter of the engine The device for selectively sealing may, for example, include a rotary plug placed opposite the inlet ports, with the plug including at least two through openings.

摘要翻译： 包括活塞移动的气缸的二冲程发动机，允许加压装料进入气缸的装置（6,8; 21），以及至少两个入口槽（2,4; 20） 气瓶。 根据本发明，电动机还包括一个装置（5,7; 30; 60），该装置用于选择性地阻挡槽的通道部分，用于承受电荷，作为电动机运行的至少一个参数的函数 。 选择性阻塞装置可以包括例如面向入口槽（20）放置并且包括至少两个横向开口（32）的旋转阀（30）。

公开(公告)号：US5090363A

公开(公告)日：1992-02-25

申请号：US544882

申请日：1990-06-28

申请人： Pierre Duret

发明人： Pierre Duret

IPC分类号： F02B25/18 ,  F02B33/04 ,  F02B33/44 ,  F02B75/02 ,  F02B75/20 ,  F02D9/02 ,  F02M67/02 ,  F02M69/08 ,  F02M69/10

CPC分类号： F02M69/08 ,  F02B33/04 ,  F02B33/44 ,  F02M67/02 ,  F02B2075/025 ,  F02B75/20 ,  F02D2009/0291

摘要： A two cycle engine with pneumatic injection, with the engine including a cylinder, a crankcase communicating with one end of the cylinder, and at least one transfer passageway joining the crankcase to the cylinder. A fuel injector is supplied with compressed air by a container connected to the crankcase and a flow restriction arrangement for restricting the flow of gases is disposed in the transfer passageway. The opening and closing of the flow restriction arrangement is controlled and regulated as a function of at least one engine operating parameter, with the overall result being an improvement in a quality of the fuel injection into the two cycle engines.

摘要翻译： 一种具有气动喷射的双循环发动机，发动机包括气缸，与气缸的一端连通的曲轴箱以及将曲轴箱连接到气缸的至少一个传送通道。 燃料喷射器通过连接到曲轴箱的容器供应压缩空气，并且用于限制气体流动的流动限制装置设置在输送通道中。 流量限制装置的打开和关闭作为至少一个发动机操作参数的函数被控制和调节，其总体结果是改进了向两冲程发动机的燃料喷射的质量。

公开(公告)号：US20020104493A1

公开(公告)日：2002-08-08

申请号：US09847578

申请日：2001-05-02

发明人： Takashi Fukuoka ,  Mitsujiro Mochizuka ,  Shiro Yamaguchi

IPC分类号： F02B033/04

CPC分类号： F02B31/04 ,  F02B25/16 ,  F02B33/04 ,  F02B33/44 ,  F02B63/02 ,  F02B2075/025 ,  F02D2009/0291 ,  F02F1/22 ,  Y02T10/146

摘要： A two-stroke internal combustion engine that emits exhaust gases with reduced amounts of noxious components, such as HC, and has less blow-by of unburned air-fuel mixture has a crank chamber located below a piston and a combustion actuating chamber located above the piston. Either one pair or two pairs of scavenging passageways communicate the crank chamber with the combustion actuating chamber, the scavenging passageways of the one pair or of each of the two pairs being disposed symmetrically with respect to a plane that bisects an exhaust port so as to form a Schnnullrle-type scavenging system. Each scavenging passageway is throttled at a location proximate to a scavenging inlet port thereof.

摘要翻译： 一种二冲程内燃机，其以较少量的有害组分（例如HC）排放废气，并且具有较少的未燃烧空气 - 燃料混合物的窜气，其具有位于活塞下方的曲柄室和位于 活塞。 一对或两对清扫通道将曲柄室与燃烧促动室连通，一对或这两对中的每一对的扫气通道相对于平分于排气口的平面对称地设置以形成 Schnürle型扫气系统。 每个扫气通道在靠近其扫气入口的位置节流。

公开(公告)号：US5623895A

公开(公告)日：1997-04-29

申请号：US384510

申请日：1995-02-06

申请人： Tatsuyuki Masuda ,  Seiichi Nishimura

发明人： Tatsuyuki Masuda ,  Seiichi Nishimura

IPC分类号： B63H20/00 ,  F02B25/14 ,  F02B25/28 ,  F02B75/02 ,  F02D9/02 ,  F02D13/02 ,  F02B33/04

CPC分类号： F02B25/28 ,  F02B2075/025 ,  F02D2009/0291

摘要： An improved scavenging control system for a multi-cylinder, V-type, two-cycle crankcase compression internal combustion engine. In each embodiment, a scavenging manifold extends along one side of the crankcase chamber and communicates with the individual sealed sections therein through respective scavenging control passages. A plurality of butterfly-type throttle valves controls the communication between the crankcase chamber and the scavenging manifold and these valves are all affixed on a common valve shaft. In one embodiment, the scavenge control system is disposed in the valley between the cylinder banks and in the other illustrated embodiment, the scavenging system is disposed on one side of the crankcase and outside of the valley between the cylinder banks.

摘要翻译： 一种用于多气缸，V型，双循环曲轴箱压缩内燃机的改进的扫气控制系统。 在每个实施例中，扫气歧管沿着曲轴箱室的一侧延伸，并通过相应的扫气控制通道与其中各个密封部分连通。 多个蝶形节流阀控制曲轴箱室和扫气歧管之间的连通状态，这些阀都固定在公共阀轴上。 在一个实施例中，清扫控制系统设置在气缸组之间的谷部中，并且在另一示出的实施例中，扫气系统设置在曲轴箱的一侧并且位于气缸组之间的谷之外。

公开(公告)号：US5251584A

公开(公告)日：1993-10-12

申请号：US974983

申请日：1992-11-12

申请人： Akihiko Ohkubo

发明人： Akihiko Ohkubo

IPC分类号： F02B3/06 ,  F02B33/04 ,  F02B33/28 ,  F02B39/16 ,  F02B75/02 ,  F02D9/02 ,  F02D13/02

CPC分类号： F02D13/0284 ,  F02B33/04 ,  F02B33/28 ,  F02B39/16 ,  F02D9/02 ,  F02B2075/025 ,  F02B3/06 ,  F02D2009/0291 ,  Y02T10/18

摘要： Two embodiments of two cycle, crankcase compression engines wherein exhaust emissions are controlled by controlling the amount of scavenging air flow at low and mid ranges. The scavenging air flow is controlled by balance passages that interconnect at least two crankcase chambers of the engine and in which a control valve is provided. In one embodiment, the balance passage is positioned above the crankcase chambers and communicates with them through downwardly extending passages so as to preclude the likelihood of condensation of fuel or lubricant in the balance passages and to return any fuel or lubricant to the crankcase chambers.