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1. 发明公开

EP3628855A1 STRATIFIED SCAVENGING ENGINE AND PORTABLE WORK MACHINE 有权
公开(公告)号：EP3628855A1
公开(公告)日：2020-04-01
申请号：EP19199228.8
申请日：2019-09-24
申请人： Yamabiko Corporation
发明人： YAMAGUCHI, Shiro , SHIRAI, Ken , ISOGAI, Tetsuya
IPC分类号： F02F3/24 , F02B25/14 , F02B25/22 , F02B33/04 , F02B63/02 , F02B29/02 , F02M35/10
摘要： Provided is a stratified scavenging engine and a portable work machine that suppress THC sufficiently. A stratified scavenging engine 10 includes: a cylinder 20 having a cylinder bore 21; and a piston 30 stored in the cylinder bore 21 to be movable in a reciprocating manner. The cylinder 20 has an intake port 23 to intake leading air and a scavenging port 26a, 26b to scavenge combustion gas, the intake port 23 and the scavenging port 26a, 26b being open to the cylinder bore 21. The piston 30 has a peripheral surface 31 including a piston groove 32 to guide leading air from the intake port 23 to the scavenging port 26a, 26b, and the piston groove 32 has a recess 44 near the intake port 23.

2. 发明授权

EP1774150B1 A CRANKCASE SCAVENGED TWO-STROKE INTERNAL COMBUSTION ENGINE HAVING AN ADDITIONAL AIR SUPPLY. 失效
标题翻译：与曲轴箱冲洗，额外的空气供应二冲程内燃机
公开(公告)号：EP1774150B1
公开(公告)日：2014-11-05
申请号：EP04749173.3
申请日：2004-07-16
申请人： Husqvarna AB
发明人： JÄRNLAND, Per-Arne , STEEN, Stefan , BERNEKLEV, Joel
IPC分类号： F02B25/22
CPC分类号： F02M35/1019 , F02B25/14 , F02B25/22 , F02M35/108

3. 发明公开

EP2568153A4 AIR CLEANER OF TWO-CYCLE ENGINE 有权转让
标题翻译：空气滤清器的两冲程发动机
公开(公告)号：EP2568153A4
公开(公告)日：2014-07-09
申请号：EP11777428
申请日：2011-04-25
申请人： MITSUBISHI HEAVY IND LTD
发明人： UENOYAMA KAZUYUKI , KIMURA TAKAHIRO
IPC分类号： F02M35/024 , F02B25/22 , F02B75/02 , F02M1/02 , F02M17/34 , F02M35/04
CPC分类号： F02M1/02 , F02B25/22 , F02B2075/025 , F02M17/34 , F02M35/024
摘要： An air cleaner in a two-stroke engine having an air supply passage that is connected midway of a scavenging passage communicating a scavenging port provided in a side portion of a cylinder with a crank chamber and that supplies leading air from the air cleaner to the scavenging passage, and an air/fuel mixture supply passage supplying air/fuel mixture created in a carburetor to the crank chamber. The air cleaner includes: a first air passage and a second air passage arranged in parallel, the first air passage being communicated with the air supply passage and the second air passage being communicated with the air/fuel mixture supply passage; and a choke valve opening and closing both of the first air passage and the second air passage of the air cleaner. The choke valve has a pivot axis and a pivotable valve member pivoting about the pivot axis to open and close respective inlet openings of the first air passage and the second air passage. One of the first air passage and the second air passage that is located closer to the pivot axis has an inlet opening flattened along a pivoting edge of the valve member.

4. 发明授权

EP2536932B1 TWO-STROKE ENGINE WITH LOW CONSUMPTION AND LOW EMISSIONS 有权
标题翻译：消耗和排放ARMS二冲程发动机
公开(公告)号：EP2536932B1
公开(公告)日：2014-03-19
申请号：EP10711737.6
申请日：2010-02-17
申请人： Primavis S.r.l.
发明人： BALDINI, Piero
IPC分类号： F02B33/20 , F02B33/30 , F02B33/44 , F02B25/20 , F02B25/22 , F02D9/04 , F02D9/16 , F02D13/02
CPC分类号： F02B33/20 , F02B23/101 , F02B25/14 , F02B25/20 , F02B29/083 , F02B33/30 , F02B33/44 , F02B2075/025 , F02D9/16 , F02D13/0284 , Y02T10/125 , Y02T10/146 , Y02T10/18

5. 发明公开

EP1566527A3 Stratified air scavenged two-cycle engine with air flow 审中-公开
标题翻译：与分层净化空气流二冲程发动机
公开(公告)号：EP1566527A3
公开(公告)日：2013-01-16
申请号：EP05075079.3
申请日：2005-01-17
申请人： Husqvarna Consumer Outdoor Products N.A., Inc.
发明人： Warfel, Paul , Perryman, Roy M. , Tynes, Rodney
IPC分类号： F02B25/14 , F02B25/22 , F02B25/24
CPC分类号： F02B25/14 , F02B25/22 , F02B25/24
摘要： An SAS two-cycle engine (10) has a cylinder block (12) that has a bore (14) with at least one scavenging port (32) and at least one fresh air port (62, 64) therein. The bore (14) extends to a crankcase (20). A piston (50) of the engine (10) is located within the bore (14) and separates a combustion chamber (52) of the bore (14) from the crank area (22) and is movable between a first position, in closest proximity to the crank area (22), and a second position. The air port (62, 64) and the piston (50) are configured such that air may flow from the air port (62, 64) into the combustion chamber (52) of the cylinder when the piston (50) is at the first position. In one example, the scavenging port (32) and the air port (62, 64) have edges that are selectively revealed upon movement of the piston (50). The air port (62, 64) includes an upper edge (66, 68), which may be contoured such that only a portion of the upper edge (66, 68) is exposed when the piston (50) is at the first position.

6. 发明公开

EP2536932A1 TWO-STROKE ENGINE WITH LOW CONSUMPTION AND LOW EMISSIONS 有权
标题翻译：消耗和排放ARMS二冲程发动机
公开(公告)号：EP2536932A1
公开(公告)日：2012-12-26
申请号：EP10711737.6
申请日：2010-02-17
申请人： Primavis S.r.l.
发明人： BALDINI, Piero
IPC分类号： F02B33/20 , F02B33/30 , F02B33/44 , F02B25/20 , F02B25/22 , F02D9/04 , F02D9/16 , F02D13/02
CPC分类号： F02B33/20 , F02B23/101 , F02B25/14 , F02B25/20 , F02B29/083 , F02B33/30 , F02B33/44 , F02B2075/025 , F02D9/16 , F02D13/0284 , Y02T10/125 , Y02T10/146 , Y02T10/18
摘要： Two-stroke engine (10) including an engine cylinder (18), a piston (20) sliding in the engine cylinder (18), an air pump (9), a main pipe (32) connected to the air pump (9) that communicates with the engine cylinder (18) through a plurality of scavenging pipes (28) opening into the cylinder immediately above the piston (20) in its bottom dead center position, an exhaust pipe also opening into the cylinder (18) immediately above the piston (20) in its bottom dead center position, an auxiliary pipe (29) branching from the main pipe (32) and opening into the cylinder (18) at a level higher than the scavenging pipes (28) and exhaust pipes (33), and a valve (30) capable of selectively opening and closing the auxiliary pipe (29) and configured to supercharge and decompress the cylinder (18) during the engine start-up phase.

7. 发明授权

EP1992804B1 TWO-CYCLE ENGINE 有权转让
标题翻译：二冲程发动机
公开(公告)号：EP1992804B1
公开(公告)日：2012-10-10
申请号：EP07715150.4
申请日：2007-03-02
申请人： Husqvarna Zenoah Co., Ltd.
发明人： WADA, Shinichi , KOBAYASHI, Buhei
IPC分类号： F02B25/22 , F02B25/20
CPC分类号： F02B25/14 , F02B25/22 , F02D9/16

8. 发明公开

EP2469055A1 CARBURETOR 有权
标题翻译：化油器
公开(公告)号：EP2469055A1
公开(公告)日：2012-06-27
申请号：EP09848490.0
申请日：2009-08-20
申请人： Husqvarna Zenoah Co., Ltd.
发明人： SUGISHITA Yuu , OHNIWA Takashi
IPC分类号： F02B25/22 , F02M19/00
CPC分类号： F02M1/02 , F02B25/22 , F02B63/02 , F02B2075/025 , F02D9/1045 , F02M19/08 , F02M19/081
摘要： In a carburetor (1) including a choke valve (7) on the upstream side inside an aspiration passage (3) and a throttle valve (8) on the downstream side, the valves (7) and (8) are disposed at positions such that the valves adjacently oppose each other when having been turned to be in the fully open state, a bulging part (11) that bulges toward the region (Al) between the adjacently opposing valves (7) and (8) is integrally provided inside a venturi (9), and the aspiration passage (3) is divided into an air-fuel mixture passage (4) located on the side where a main jet (10) is provided and an air passage (5) through which leading air circulates by the bulging part and the valves (7) and (8), both of which are in the fully open condition.
摘要翻译：在吸气通路（3）内的上游侧具有节流阀（7），在下游侧具有节流阀（8）的化油器（1）中，阀（7），（8）（7）和（8）之间的区域（A1）凸出的凸出部分（11）一体地设置在一个凸出部分（11）内部，该凸出部分（11）在转动到完全打开状态时彼此相邻地相对，文丘里管9和抽吸通道3分成位于设有主喷嘴10的一侧的空气 - 燃料混合物通道4和引导空气通过其循环的空气通道5，鼓出部分和阀门（7）和（8）都处于完全打开状态。

9. 发明公开

EP1992804A4 TWO-CYCLE ENGINE 有权转让
标题翻译：二冲程发动机
公开(公告)号：EP1992804A4
公开(公告)日：2011-08-03
申请号：EP07715150
申请日：2007-03-02
申请人： HUSQVARNA ZENOAH CO LTD
发明人： WADA SHINICHI , KOBAYASHI BUHEI
IPC分类号： F02B25/22 , F02B25/20
CPC分类号： F02B25/14 , F02B25/22 , F02D9/16

10. 发明公开

EP2017446A4 LAMINAR-SCAVENGING TWO-CYCLE ENGINE 有权
标题翻译： ZWEITAKTMOTOR MITSCHICHTSPÜLUNG
公开(公告)号：EP2017446A4
公开(公告)日：2009-07-15
申请号：EP07743063
申请日：2007-05-10
申请人： NIKKO TANAKA ENGINEERING CO LT
发明人： ISHIDA SHIGETOSHI
IPC分类号： F02B25/16 , F02B25/22
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).
摘要翻译：本发明提供一种层流扫气式二冲程发动机，其可以具有比现有技术的层流扫气式二冲程发动机更高的层流清除效果，并且可以期望对燃烧稳定性和防止窜漏。层流扫气式二冲程发动机的特征在于，扫气通道（4）构成为包括沿着曲轴箱（9）延伸的部分（或曲轴箱侧部分（4a））和沿着曲轴箱（9）延伸的部分（或气缸侧部分（10）的长度大于气缸（10）的直径和行程的总和的长度（4b）），用于将先导空气引入扫气装置的环境空气引入通道（11）通路4与扫气通路4的中间部连通，在活塞8为开放状态时，用于在扫气口7的开口部朝向曲轴箱9侧打开扫气口7的切口部8a，在上止点附近形成在活塞（8）中。

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