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41. 发明公开

EP0971110A4 STRATIFIED SCAVENGING TWO-CYCLE ENGINE 审中-公开
标题翻译： ZWEITAKTMOTOR MITSCHICHTSPÜLUNG
公开(公告)号：EP0971110A4
公开(公告)日：2000-09-06
申请号：EP98944286
申请日：1998-09-29
申请人： KOMATSU ZENOA KK , PETROLEUM ENERGY CENTER FOUND
发明人： SAWADA TOSHIHARU , NOGUCHI MASANORI , KOBAYASHI BUHEI
IPC分类号： F02B17/00 , F02B25/14 , F02B25/16 , F02B25/22 , F02B75/02 , F02B23/00
CPC分类号： F02B25/14 , F02B17/00 , F02B2075/025
摘要： A stratified scavenging two-cycle engine capable of meeting the regulation for an emission rate of THC in exhaust gases with a simple construction, comprising a cylinder (4) receiving a piston (1) vertically slidably and having an exhaust port (14) and a scavenging port (16) in a side wall thereof, a scavenging channel (22) connecting a crank chamber (8) and the scavenging port (16), an air supply flow passage (24) connected to the scavenging channel (22) for supplying an air via a check valve (26), and an air-fuel mixture supply flow passage (20) for supplying an air-fuel mixture to the crank chamber (8), wherein, during a suction stroke, in which the crank chamber (8) becomes negative in pressure, an air charging quantity ratio R = qa/Qf, which is a ratio of an air charging quantity qa flowing through the air supply flow passage (24), to an air-fuel mixture charging quantity Qf flowing through the air-fuel mixture supply flow passage (20), satisfies 0.7
摘要翻译：本发明涉及一种分层扫气式二冲程发动机，其能够以简单的结构满足排气中THC排放速率的调节，该分层扫气式二冲程发动机包括容纳垂直可滑动地具有排气口（14）和活塞（1）的活塞（1）的气缸（4）连接曲轴室（8）和扫气口（16）的扫气通道（22），与扫气通道（22）相连的供气流道（24）通过止回阀（26）产生的空气以及用于向曲柄室（8）供应空气 - 燃料混合物的空气 - 燃料混合物供应流道（20），其中，在吸入行程中，曲轴室 8）成为负压时，作为流过供气流路（24）的充气量qa与流过空气供给流路（24）的混合气充量Qf之比即充气量比R = qa / Qf 空气 - 燃料混合物供应流动通道（20）满足0.7

42. 发明授权

EP0426660B1 METHOD OF AND APPARATUS FOR IMPROVING THE OPERATION OF AN ENGINE 失效
标题翻译：改进发动机运行的方法和装置
公开(公告)号：EP0426660B1
公开(公告)日：1992-04-01
申请号：EP88904407.9
申请日：1988-05-06
申请人： SUOMINEN, Lauri , SUOMINEN, Brita
发明人： SUOMINEN, Lauri , SUOMINEN, Brita
IPC分类号： F02B25/22
CPC分类号： F02B17/00 , F02B25/22 , F02B29/00 , Y02T10/146
摘要： The invention relates to a method of improving the operation of an engine. The engine includes a cylinder space (1), a piston (2) movable therein, at least one inlet valve (3), at least one outlet valve (4) as well as at least one inlet (5) and outlet (6) duct. Into inlet duct (5) or the like is introduced an air filling (IT) prior to the start of an induction stroke in a manner that said filling is first in inlet duct (5) immediately downstream of inlet valve (3). At least a portion (IT2) of air filling (IT) or the like is introduced into cylinder space (1) while outlet valve (4) is closed. A portion (IT1) of air filling can be reserved for flushing the cylinder space and said portion (IT1) is intended to exit through outlet valve (4). A fuel-and-air mixture (PAS) is introduced into the cylinder space after air filling (IT). An apparatus of the invention includes means that are synchronized for filling a section of inlet duct (5) or the like starting immediately downstream of inlet valve (3) with air filling (IT) prior to the start of an induction stroke.

43. 发明公开

EP3987163A1 TWO-STROKE ENGINE, AND HANDHELD POWER TOOL 审中-实审
公开(公告)号：EP3987163A1
公开(公告)日：2022-04-27
申请号：EP20827776.4
申请日：2020-06-15
申请人： HUSQVARNA AB
发明人： HEDBERG, Markus , ENANDER, Niklas , STALFORS, Tobias
IPC分类号： F02B25/22 , F02B33/04 , F02B63/02 , F02M69/10

44. 发明授权

EP2947305B1 STRATIFIED SCAVENGING TWO-STROKE INTERNAL COMBUSTION ENGINE 有权
公开(公告)号：EP2947305B1
公开(公告)日：2021-10-27
申请号：EP15168726.6
申请日：2015-05-21
发明人： YAMAZAKI, Takahiro , YAMAGUCHI, Shirou , OTSUJI, Takamasa
IPC分类号： F02M35/10 , F02B75/02 , F02B63/02 , F02B33/04 , F02B25/22 , F02M19/08 , F02M17/34 , F02M17/12 , F02M9/08 , F02M35/108 , F02M69/10

45. 发明授权

EP3273048B1 SUCTION TUBE OF STRATIFIED SCAVENGING ENGINE 有权转让
公开(公告)号：EP3273048B1
公开(公告)日：2019-08-07
申请号：EP17174004.6
申请日：2017-06-01
申请人： Yamabiko Corporation
发明人： YONEYAMA, Kazuhiro , MIYAZAKI, Hiroshi
IPC分类号： F02M35/10 , F02B25/04 , F02B25/22 , F02B33/04 , F02B33/44 , F02B17/00

46. 发明公开

EP3277946A1 TWO-STROKE INTERNAL COMBUSTION ENGINE 有权
标题翻译：二冲程内燃机
公开(公告)号：EP3277946A1
公开(公告)日：2018-02-07
申请号：EP15713730.8
申请日：2015-03-31
申请人： Husqvarna AB
发明人： LUNDGREN, Alexander , BERNEKLEV, Joel , SCHOUG, Tommy
IPC分类号： F02M35/10 , F02M35/108 , F02B25/22 , F02D9/02
CPC分类号： F02B25/06 , F02B25/22 , F02B75/02 , F02B2075/025 , F02D9/02 , F02D2009/0252 , F02M35/1017 , F02M35/10196 , F02M35/108
摘要： An internal combustion engine (10), including a cylinder (15) with a cylinder wall (12) defining a combustion chamber (32), a piston (13) reciprocally disposed within the combustion chamber (32) a crankcase (16) including a crankshaft (11) rotatably disposed therein, the piston (13) being connected to the crankshaft (11) by a connecting rod (17), a first scavenger duct (3) extending between the combustion chamber (32) and the crankcase (16), the first scavenger duct (3) including a top port (31a) and a bottom port (31b), a fuel and air inlet channel (22) in fluid communication with the crankcase (16) by way of a piston ported fuel and air inlet port (23) so that the fuel and air inlet channel (22) delivers a fuel and air mixture to the crankcase (16), and an airhead channel (6) in fluid communication with the first scavenger duct (3) by way of a first piston ported air inlet port (7), characterized in that the fuel and air inlet channel (22) is in fluid communication with the airhead channel (6) so that the fuel and air mixture is combinable with the air flow from the airhead channel (6).

47. 发明公开

EP2739839A4 ADJUSTING OF AIR-FUEL RATIO OF A TWO-STROKE INTERNAL COMBUSTION ENGINE 有权
标题翻译：设置两冲程内燃机的空燃比
公开(公告)号：EP2739839A4
公开(公告)日：2016-01-20
申请号：EP11870558
申请日：2011-08-05
申请人： HUSQVARNA AB
发明人： BERGMAN MIKAEL
IPC分类号： F02D41/14 , F01N3/10 , F02B25/02 , F02B25/04 , F02B25/22 , F02B33/04 , F02B63/02
CPC分类号： F02B75/02 , F01N3/101 , F02B25/04 , F02B25/22 , F02B33/04 , F02B63/02 , F02B2075/025 , F02D35/0053 , F02D41/1439 , F02D41/1454 , F02D41/1488 , F02D2400/04 , F02D2400/06 , Y02T10/22
摘要： To meet stringent emission standards and improve performance of two-stroke crankcase-scavenged engines, the muffler (13) of the engine is provided with mixing means (130, 31) for mixing the exhaust gases (42) resulting from the mixture participating in combustion and gases resulting from scavenging, so that a substantially homogenous gaseous mixture is formed within the muffler (13), and means (81) for sensing oxygen concentration is located in the homogeneous gaseous mixture and are configured to provide an output value to a control unit (80) for controlling supply of fuel to the engine and thereby the air-fuel ratio in the combustion chamber (41). The muffler (13) suitably is provided with a catalytic element (140), preferably a three-way catalyst. The engine (1) preferably is a stratified charge engine.

48. 发明授权

EP2670956B1 2-CYCLE ENGINE AND ENGINE-POWERED WORKING MACHINE HAVING THE SAME 有权
标题翻译：二冲程发动机和发动机驱动的工作机器，
公开(公告)号：EP2670956B1
公开(公告)日：2015-03-11
申请号：EP12705170.4
申请日：2012-01-30
申请人： Hitachi Koki Co., Ltd.
发明人： NIWA, Kenji , IKEDA, Tomoya , ISHIDA, Shigetoshi
IPC分类号： F02F1/22 , F02B25/22 , F02B29/00 , F02B33/04 , F01L3/20 , F02B25/14 , F02B63/02 , F01L9/04 , F02B75/16 , F02D13/02 , F02B75/02
CPC分类号： F02B29/00 , F01L3/205 , F01L9/04 , F02B25/14 , F02B25/22 , F02B33/04 , F02B63/02 , F02B75/16 , F02B2075/025 , F02D13/028 , F02F1/22 , Y02T10/18

49. 发明授权

EP2378095B1 Laminar-scavenging two-cycle engine 有权转让
标题翻译：与层流冲洗两冲程发动机
公开(公告)号：EP2378095B1
公开(公告)日：2014-10-01
申请号：EP11173698.9
申请日：2007-05-10
申请人： Hitachi Koki CO., LTD.
发明人： Ishida, Shigetoshi
IPC分类号： F02B25/16 , F02B25/22 , F02F3/24
CPC分类号： F02B25/16 , F02B25/22 , F02B2075/025 , F02F1/22 , F02F3/24
摘要： Provided is a laminar-scavenging two-cycle engine, which can have a higher laminar-scavenging effect than that of the laminar-scavenging two-cycle engine of the prior art and which can expect drastically excellent effects on the stabilization of combustion and on the blow-by prevention. The laminar-scavenging two-cycle engine is characterized in that a scavenging passage (4) is constituted to include a portion (or a crankcase side portion (4a)) extending along a crankcase (9) and a portion (or a cylinder side portion (4b)) extending along a cylinder (10) and to have a length larger than the sum of the diameter and stroke of the cylinder (10), in that an ambient air introducing passage (11) for introducing the leading air into the scavenging passage (4) is connected to an intermediate portion of the scavenging passage (4), and in that a notch (8a) for opening a scavenging port (7) to the side of the crankcase (9) when a piston (8) is near the top dead center is formed in the piston (8).

50. 发明公开

EP2492468A4 STRATIFIED SCAVENGING TWO-CYCLE ENGINE 审中-公开
标题翻译： ZWEITAKTMOTOR MITSCHICHTSPÜLUNG
公开(公告)号：EP2492468A4
公开(公告)日：2013-11-20
申请号：EP09850572
申请日：2009-10-21
申请人： HUSQVARNA ZENOAH CO LTD
发明人： ONO RYOU , OHNIWA TAKASHI , SEKINE AKIYOSHI
IPC分类号： F02B25/22 , F02M9/08 , F02M9/12
CPC分类号： F02M9/085 , F02B25/22 , F02B2075/025 , F02M19/02
摘要： A stratified scavenging two-cycle engine (10) comprising an engine body (11), a carburetor (12) equipped with a pivotable rotary valve (22) for switching between opening and closing of a single intake path, and an insulator (13) having heat insulating performance. The rotary valve (22) of the carburetor (12) is provided with a fuel injecting nozzle opening (26) open downward. Fuel from the nozzle opening (26) is injected in the directions corresponding to a mixed gas path (27) and to that portion of an air path (28) which is upstream in the mixed gas path (27).
摘要翻译：一种分层扫气式二冲程发动机（10），其包括发动机体（11），配备有用于在单个进气通道的打开和关闭之间进行切换的可枢转旋转阀（22）的化油器（12）具有隔热性能。化油器（12）的旋转阀（22）具有向下开口的燃料喷射喷嘴开口（26）。来自喷嘴开口部26的燃料向与混合气体通路27对应的方向以及混合气体通路27上游的空气通路28的部分喷射。

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