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1. 发明授权

US11492956B2 Two-stroke internal combustion engine 有权
公开(公告)号：US11492956B2
公开(公告)日：2022-11-08
申请号：US17413126
申请日：2019-12-03
申请人： EMAK S.P.A.
发明人： Andrea Bertani
IPC分类号： F02B25/16 , F02B75/02
摘要： A two-stroke internal combustion engine includes:—a base;—a head, fixed to the base, and having a cylindrical cavity;—a piston slidable in the cylindrical cavity, to define a combustion chamber and a pumping chamber, and movable in the cylindrical cavity between a bottom and a top dead center;—a transfer duct having an inlet mouth in fluid communication with the pumping chamber, and an outlet mouth in fluid communication with the combustion chamber;—an exhaust duct having an inlet mouth in fluid communication with the combustion chamber,—a crank shaft partially housed in the pumping chamber;—a connecting rod connecting the piston to the crank shaft;—a movable partition housed inside the pumping chamber operatively connected to the crank shaft to occlude the transfer duct inlet mouth and to put in fluid communication the transfer duct inlet mouth with the pumping chamber.

2. 发明授权

US09249716B2 Stratified scavenging two-stroke engine 有权
标题翻译：分层扫气二冲程发动机
公开(公告)号：US09249716B2
公开(公告)日：2016-02-02
申请号：US14280962
申请日：2014-05-19
申请人： MAKITA CORPORATION
发明人： Yoshiaki Takayanagi
IPC分类号： F02B25/22 , F02B25/06 , F02B25/16 , F02B75/02
CPC分类号： F02B25/06 , F02B25/16 , F02B25/22 , F02B75/02 , F02B2075/025
摘要： A two-stroke engine is provided with a scavenging passage that extends between a scavenging intake that opens into a crankcase and a scavenging port that opens into a cylinder, and an air passage that is connected to an intermediate position of a scavenging passage for introducing air into the scavenging passage. A first check valve that is disposed within a section of a scavenging passage between a scavenging intake and the intermediate position. A second check valve that is disposed within the air passage. The section of the scavenging passage between the intermediate position and the scavenging intake, the air passage, and a mixture gas passage are arranged in a substantially same direction with respect to a longitudinal axis of the cylinder.
摘要翻译：二冲程发动机设有扫气通道，该通风通道在通向曲轴箱的扫气入口与通向气缸的扫气口之间延伸;以及空气通道，其连接到用于引入空气的扫气通道的中间位置进入清扫通道。第一止回阀，设置在扫气通道的清扫进气口和中间位置之间的一段内。设置在空气通道内的第二止回阀。中间位置与扫气入口，空气通道和混合气体通道之间的扫气通道的截面相对于气缸的纵向轴线大致相同的方向排列。

3. 发明授权

US09151213B2 Internal combustion engine, in particular two-stroke internal combustion engine 有权
标题翻译：内燃机，特别是二冲程内燃机
公开(公告)号：US09151213B2
公开(公告)日：2015-10-06
申请号：US13852388
申请日：2013-03-28
申请人： MAKITA CORPORATION
发明人： Harry Radel , Michael Schoenfeld , Johannes Luegger
IPC分类号： F02B25/00 , F02B29/00 , F02B25/16 , F02B25/20 , F02B33/30
CPC分类号： F02B29/00 , F02B25/16 , F02B25/20 , F02B33/30
摘要： To create an internal combustion engine including a crankcase and a cylinder, wherein a piston is guided in the cylinder to perform a stroke movement and movably defines a combustion chamber, and wherein at least one transfer channel, through which ignition mixture is guided from the crankcase into the combustion chamber, is arranged in the cylinder, which leads to a further improvement of the exhaust gas quality and/or of the fuel consumption, in particular for creating an improved metering of ignition mixture into the fuel chamber, it is proposed for the piston to encompass a lower piston edge, which interacts with at least one counter body such that an inlet cross section of the transfer channel for the inflow of the ignition mixture from the crankcase into the transfer channel can be controlled by the stroke movement of the piston by the lower piston edge.
摘要翻译：为了产生包括曲轴箱和气缸的内燃机，其中活塞在气缸中被引导以执行冲程运动并且可移动地限定燃烧室，并且其中至少一个输送通道使得点火混合物从曲轴箱进入燃烧室，设置在气缸中，这导致废气质量和/或燃料消耗的进一步改善，特别是为了产生改进的点燃混合物计量到燃料室中，建议为活塞以包围下活塞边缘，其与至少一个相对体相互作用，使得用于将点火混合物从曲轴箱流入输送通道的输送通道的入口横截面可以通过活塞的行程运动来控制通过下活塞边缘。

4. 发明授权

US07013850B2 Two-stroke engine 失效
标题翻译：二冲程发动机
公开(公告)号：US07013850B2
公开(公告)日：2006-03-21
申请号：US10834131
申请日：2004-04-29
申请人： Antonio Fattorusso
发明人： Antonio Fattorusso
IPC分类号： F02B25/16
CPC分类号： F02B25/14 , F02B25/16
摘要： A two-stroke engine has a cylinder defining a combustion chamber which is delimited by an upwardly and downwardly moving piston which drives a crankshaft via a connecting rod. The crankshaft is rotatably journalled in the crankcase (4). The two-stroke engine includes an inlet for fuel and an outlet for exhaust gases. At pregiven piston positions, the combustion chamber is connected to the crankcase via a piston window and at least one transfer channel. The transfer channels open via transfer windows into the combustion chamber and open with the transfer opening into the crankcase. The transfer opening and transfer windows open into a region at the cylinder bore which is passed over by the piston. To obtain a delayed inflow of the air/fuel mixture from the crankcase, the transfer opening is not yet fully closed for a piston moved toward the crankcase when the transfer windows begin to open.
摘要翻译：二冲程发动机具有限定燃烧室的气缸，该燃烧室由向上和向下运动的活塞限定，其通过连接杆驱动曲轴。曲轴可旋转地轴颈安装在曲轴箱（4）中。二冲程发动机包括用于燃料的入口和用于废气的出口。在预先活塞位置，燃烧室经由活塞窗口和至少一个输送通道连接到曲轴箱。转移通道通过转移窗口进入燃烧室，并将转移开口打开进入曲轴箱。传送打开和传送窗口打开到由活塞过去的气缸孔的区域。为了获得来自曲轴箱的空气/燃料混合物的延迟流入，当转移窗口开始打开时，传递开口尚未完全关闭，以使活塞向曲轴箱移动。

5. 发明申请

US20050155563A1 Two-cycle combustion engine 有权
标题翻译：双循环内燃机
公开(公告)号：US20050155563A1
公开(公告)日：2005-07-21
申请号：US11033660
申请日：2005-01-11
申请人： Tsuneyoshi Yuasa , Masanori Kobayashi
发明人： Tsuneyoshi Yuasa , Masanori Kobayashi
IPC分类号： F02B33/04 , F02B25/14 , F02B25/16 , F02B25/20 , F02B25/00
CPC分类号： F02B25/20 , F02B25/14
摘要： To provide a two-cycle combustion engine of a simplified structure with the number of component parts reduced, which is effective to suppress a blow-off of the air/fuel mixture and is excellent in acceleration, the two-cycle combustion engine includes scavenging passages (13, 14) communicating between a combustion chamber (1a) and a crank chamber (2a), an air/furl mixture passage (11) for introducing an air/fuel mixture (EM) from a fuel supply device (3) to the crank chamber (2a), and a branch passage (10A) ramified off from the air/fuel mixture passage (11) for supplying a lean air/fuel mixture (TM) into the scavenging passages (14). During an intake stroke, the lean air/fuel mixture (TM) from the branch passage (10A) is introduced into the scavenging passages (14) and the air/fuel mixture (EM) is introduced from the air/fuel mixture passage (11) into the crank chamber (2a). During a scavenging stroke, the lean air/fuel mixture (TM) is supplied from the scavenging passages (14) into the combustion chamber (2a) prior to introduction of the air/fuel mixture (EM).
摘要翻译：为了提供一种简化结构的双循环内燃机，减少了部件数量，有效地抑制空气/燃料混合物的吹出，并且加速性优异，两循环内燃机包括清扫通道（1a）和燃烧室（1a）之间连通的空气/混合物通道（11），用于从燃料供给装置（3）引入空气/燃料混合物（EM）以及从空气/燃料混合物通道（11）分支的用于将稀空气/燃料混合物（TM）供应到扫气通道（14）中的分支通道（10A）。在进气行程中，来自分支通道（10A）的稀空气/燃料混合物（TM）被引入扫气通道（14），空气/燃料混合物（EM）从空气/燃料混合物通道 11）进入曲柄室（2a）。在清扫行程期间，在引入空气/燃料混合物（EM）之前，稀空气/燃料混合物（TM）从扫气通道（14）供应到燃烧室（2a）中。

6. 发明授权

US06848399B2 Scavenging insert for an engine 有权
标题翻译：清理发动机的插入物
公开(公告)号：US06848399B2
公开(公告)日：2005-02-01
申请号：US10449152
申请日：2003-05-30
申请人： Paul D. Watkins , Paul A. Warfel , Scott W. Ericson
发明人： Paul D. Watkins , Paul A. Warfel , Scott W. Ericson
IPC分类号： F02B17/00 , F02B25/14 , F02B25/16 , F02B25/22 , F02B25/28 , F02B75/02 , F02F1/00 , F02F1/22 , F02B33/04
CPC分类号： F02B25/22 , F02B17/00 , F02B25/14 , F02B25/16 , F02B25/28 , F02B2075/025 , F02F1/22
摘要： An internal combustion engine having a cylinder chamber, a crankcase in fluidic communication with the cylinder chamber, and a scavenging conduit insert providing for the communication between the cylinder chamber and the crankcase. The scavenging insert may form a part of a surface against which a piston slides.
摘要翻译：具有气缸室，与汽缸室流体连通的曲轴箱的内燃机和用于气缸室与曲轴箱之间的连通的扫气导管插入件。清扫插入物可以形成活塞滑动的表面的一部分。

7. 发明授权

US6142113A Two-cycle internal combustion engine and cylinder 有权
标题翻译：双循环内燃机和气缸
公开(公告)号：US6142113A
公开(公告)日：2000-11-07
申请号：US350154
申请日：1999-07-09
申请人： Mitsujiro Mochizuka , Shigeru Taniguchi , Masami Uchida , Shiro Yamaguchi , Masayoshi Miyamoto
发明人： Mitsujiro Mochizuka , Shigeru Taniguchi , Masami Uchida , Shiro Yamaguchi , Masayoshi Miyamoto
IPC分类号： F02B25/16 , F02B25/14
CPC分类号： F02B25/14
摘要： A loop scavenge two-cycle internal combustion engine that includes a partial wall partition disposed between a scavenging path and a cylinder bore, with a cooling port formed in the partial wall partition for enabling fresh gas in the scavenging path to contact directly with a peripheral wall of a piston in the cylinder. The fresh gas in the scavenging path directly contacts and efficiently cools the peripheral surface of the piston to prevent heat rise and distortion within the engine. The partial wall partition and cooling port maximize both cooling efficiently and cylinder strength and durability.
摘要翻译：一种循环清扫双循环内燃机，其包括设置在扫气路径和气缸孔之间的部分壁分隔件，其中形成在部分壁隔板中的冷却口用于使清扫路径中的新鲜气体能够直接与周壁接触的活塞在气缸中。清扫路径中的新鲜气体直接接触并有效地冷却活塞的周边表面，以防止发动机内的热量上升和变形。局部壁分隔和冷却端口可以有效地最大限度地实现冷却和气缸强度和耐久性。

8. 发明授权

US5913291A Two-cycle internal combustion engine 失效
标题翻译：双循环内燃机
公开(公告)号：US5913291A
公开(公告)日：1999-06-22
申请号：US987075
申请日：1997-12-09
申请人： Fujio Kobayashi , Katsuya Tajima
发明人： Fujio Kobayashi , Katsuya Tajima
IPC分类号： B27B17/00 , F02B25/16 , F02B33/28 , F02B63/02 , F02B75/02 , F02M29/00
CPC分类号： F02B63/02 , F02B33/28 , F02B2075/025
摘要： A two-cycle internal combustion engine including a carburetor, a crankcase provided with a crank chamber and a suction port, an insulator attached to the crankcase and provided with a suction passage for introducing the air-fuel mixture from the carburetor to the suction port, and a reed valve whose proximal end portion is fixed to the insulator so as to allow a free end portion thereof to be optionally press-contacted with the downstream side end face of the insulator, wherein the downstream side end face of the insulator is slanted by a predetermined angle, while the suction port is contiguously connected with the slanted downstream side end face of the insulator without substantially forming a stepped portion therebetween.
摘要翻译：一种双循环内燃机，包括化油器，设置有曲柄室的曲轴箱和吸入口，附接到曲轴箱的绝缘体，并且设置有用于将空气 - 燃料混合物从化油器引入吸入口的吸入通道，以及一个簧片阀，其近端部固定在绝缘体上，以便允许其自由端部与绝缘体的下游侧端面压接，其中绝缘体的下游侧端面由预定的角度，同时吸入口与绝缘体的倾斜的下游侧端面连续地连接，而基本上不形成台阶部分。

9. 发明授权

US5682870A Air fuel ratio detecting device and system for engines 失效
标题翻译：发动机空燃比检测装置及系统
公开(公告)号：US5682870A
公开(公告)日：1997-11-04
申请号：US579873
申请日：1995-12-28
申请人： Yu Motoyama
发明人： Yu Motoyama
IPC分类号： F02B75/18 , F01N3/22 , F02B25/16 , F02B25/26 , F02B61/02 , F02B75/02 , F02D35/00 , F02D41/14 , F02D45/00 , F01N3/00
CPC分类号： F02D41/1439 , F01N13/008 , F02B61/02 , F02B2075/025 , F02D2400/04
摘要： A number of embodiments of combustion controls for two-cycle internal combustion engines wherein a sensor chamber is provided in which a combustion condition sensor is located. The sensor chamber communicates with the combustion chamber in such a way that only combustion products can flow from the combustion chamber into the sensor chamber. Various valving and control arrangements for achieving this purpose are disclosed.
摘要翻译：用于两循环内燃机的燃烧控制的多个实施例，其中设置有燃烧条件传感器所在的传感器室。传感器室与燃烧室连通，使得仅燃烧产物可以从燃烧室流入传感器室。公开了用于实现该目的的各种阀门和控制装置。

10. 发明授权

US5443045A Two-stroke fuel-injected internal combustion engine 失效
标题翻译：二冲程燃油喷射内燃机
公开(公告)号：US5443045A
公开(公告)日：1995-08-22
申请号：US167985
申请日：1993-12-23
申请人： Pierluigi Marconi
发明人： Pierluigi Marconi
IPC分类号： F02B23/10 , F02B1/04 , F02B25/00 , F02B25/14 , F02B25/16 , F02B25/20 , F02B25/26 , F02B75/02 , F02B75/12 , F02M61/14 , F02M69/10 , F02B3/00
CPC分类号： F02B25/00 , F02B25/14 , F02B25/20 , F02M69/10 , F02B1/04 , F02B2075/025 , F02B2075/027 , F02B2075/125 , Y02T10/123
摘要： A two-stroke internal combustion engine of the type comprising a cylinder exhibiting an internal cavity of substantially cylindrical shape, a reciprocating piston accommodated slidably and coaxially within the cavity, a cylinder head connect to one end of the cylinder, of which the inwardly directed face affords a combustion chamber in communication with the cavity, and at least one spark plug supported by the cylinder head, of which the ignition electrodes project toward or occupy the combustion chamber, characterized in that it comprises at least one injector passing through a side wall of the cylinder, of which the fuel spray nozzle is disposed substantially facing a given area of the cavity, and an electronic control unit by which the injector is activated cyclically.
摘要翻译： PCT No.PCT / IT93 / 00035 Sec。 371日期：1993年12月23日 102（e）日期1993年12月23日PCT 1993年4月20日PCT PCT。出版物WO93 / 22545 日期：1月11日，1993年。一种二冲程内燃机，其类型包括呈现大致圆柱形形状的内腔的气缸，可滑动并同轴地容纳在空腔内的往复活塞，气缸盖连接到气缸的一端，其中向内指向的面提供与空腔连通的燃烧室，以及由气缸盖支撑的至少一个火花塞，其中点火电极朝向或占据燃烧室，其特征在于，其包括至少一个喷射器通过气缸的侧壁，其中燃料喷嘴基本上面向腔的给定区域，以及电子控制单元，喷射器通过该电子控制单元周期性地被激活。

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