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1210 条记录 (耗时 0.025 秒)

    Two-stroke engine
    1.
    发明授权
    Two-stroke engine 有权

    公开(公告)号：US11952937B2

    公开(公告)日：2024-04-09

    申请号：US18334193

    申请日：2023-06-13

    申请人： Andreas Stihl AG & Co. KG

    发明人： Michael Grether ,  Robert Koehli ,  Richard Wirt ,  Bernd Engel

    IPC分类号： F02B25/00 ,  F02B33/02 ,  F02B75/02

    CPC分类号： F02B33/02 ,  F02B75/02 ,  F02B2075/025

    摘要： A two-stroke engine possesses a cylinder, in the cylinder bore of which a combustion chamber is formed. The combustion chamber is bounded by a reciprocating piston, which drives a crankshaft rotatably mounted in a crankcase. A crankcase interior is fluidically connected to the combustion chamber across at least one transfer channel in at least one position of the piston. The at least one transfer channel emerges with a discharge opening in the crankcase interior and with at least one transfer window on the cylinder bore. It is proposed that all transfer channels have an average length as measured from the discharge opening to the transfer window, the average length being at least 1.5 in relation to the stroke, and that the volume of the crankcase interior including all transfer channels is at most 3.1 in relation to the piston displacement.

    Apparatus to convert linear motion to rotary motion
    3.
    发明授权
    Apparatus to convert linear motion to rotary motion 有权

    公开(公告)号：US11261947B2

    公开(公告)日：2022-03-01

    申请号：US16501938

    申请日：2019-07-08

    申请人： John Richardson ,  Evan Collins ,  Aaron Grigg

    发明人： John Richardson ,  Evan Collins ,  Aaron Grigg

    IPC分类号： F02B25/00 ,  F16H25/12

    摘要： An apparatus to convert linear motion to rotary motion comprising a linear reciprocating member including a track drive member to be coupled to an input device and a rotatable track member including a track to be coupled to an output device wherein the track drive member is disposed to engage the track such that when the input device moves the linear reciprocating member back and forth the track drive member moves along the track rotating the rotatable track member to convert the linear motion imparted to the linear reciprocating member by the input device to the rotary motion of the rotatable track member to operate or drive the output device.

    Helical follower internal combustion engine
    5.
    发明授权
    Helical follower internal combustion engine 有权

    公开(公告)号：US10344671B2

    公开(公告)日：2019-07-09

    申请号：US15237513

    申请日：2016-08-15

    申请人： Evan John Collins ,  John Michael Richardson

    发明人： Evan John Collins ,  John Michael Richardson

    IPC分类号： F02B25/00 ,  F02B75/32 ,  F01L1/14 ,  F01L1/02 ,  F01L1/053 ,  F01B3/04 ,  F01B3/10 ,  F02B75/26 ,  F02B75/02 ,  F01L1/047

    摘要： The present invention is helical follower internal combustion engine. The present invention has a smooth, cylindrical follower orthogonally attached to a piston rod. The follower fits into two connected half-cylindrical, helical grooves formed by a two-piece cylindrical sleeve. The two-piece cylindrical sleeve is attached to a rotating cylindrical hub. Reciprocal motion of the piston causes rotation of the rotating cylindrical hub. The present invention has a feature that prevents the piston from rotating. The present invention can create electricity by connecting a rotor coil to the rotating cylindrical hub and placing a stator coil in near proximity. In an alternative embodiment, the present invention has an external drive shaft attached to the rotating cylindrical hub.

    Rotary carburetor for two-stroke internal combustion engine
    6.
    发明授权
    Rotary carburetor for two-stroke internal combustion engine 有权

    公开(公告)号：US10024224B2

    公开(公告)日：2018-07-17

    申请号：US15346745

    申请日：2016-11-09

    申请人： YAMABIKO CORPORATION

    发明人： Takahiro Yamazaki ,  Shirou Yamaguchi ,  Takamasa Otsuji ,  Hidekazu Tsunoda

    IPC分类号： F02B25/00 ,  F02B25/22 ,  F02B75/02 ,  F02M9/08 ,  F02M35/10 ,  F02M35/108 ,  F02B25/14 ,  F02B33/04

    摘要： To allow an intake negative pressure to directly act on a fuel outlet formed on a nozzle tube, and to guide a fuel discharged from the fuel outlet in the nozzle tube to the fuel-air mixture passage. A rotary carburetor (200) has a guide plate member (42) downstream of a fuel outlet (30) located in a through-hole (14). The guide plate member (42) has both side edges (42b) away from an inner wall surface (14a) of the through-hole (14). The through-hole (14) is divided by the guide plate member (42) into a first passage portion (44) and a second passage portion (46). The first passage portion (44) communicates through a piston groove with a scavenging passage of a cylinder. The fuel discharged from the fuel outlet (30) is guided by the guide plate member (42) to the second passage portion (46) and is supplied through the second passage portion (46) to a fuel-air mixture passage (24) of an engine intake system.

    Stratified scavenging two-stroke engine
    9.
    发明授权
    Stratified scavenging two-stroke engine 有权

    公开(公告)号：US09726070B2

    公开(公告)日：2017-08-08

    申请号：US14261945

    申请日：2014-04-25

    申请人： MAKITA CORPORATION

    发明人： Kenji Imafuku ,  Yoshifumi Watanabe ,  Hideaki Hirano ,  Junichi Masuda

    IPC分类号： F02B25/00 ,  F02B29/00 ,  F02M35/10 ,  F02B25/22 ,  F02B25/14 ,  F02F7/00 ,  F02B63/02 ,  F02B75/02

    CPC分类号： F02B29/00 ,  F02B25/14 ,  F02B25/22 ,  F02B63/02 ,  F02B2075/025 ,  F02F7/0036 ,  F02M35/1019

    摘要： An air-leading type, stratified scavenging two-stroke engine. The engine including a cylinder member and a crankcase joined therewith has an intake passage, an exhaust passage, first and second scavenging passages, a communicating portion and an air passage. The intake passage, the exhaust passage and the air passage are formed in the cylinder member. The first and the second scavenging passages each has a cylinder member-side passage and a crankcase-side passage. The cylinder member-side passages of both of the first and the second scavenging passages communicate with each other via the communicating portion. The air passage is connected to the cylinder member-side passage of the first scavenging passage. In the engine, air for pre-scavenging is introduced from the air passage through a check valve into the cylinder member-side passage of the first scavenging passage, and a part of the introduced air flows into the second scavenging passage through the communicating portion.

    ADJUSTMENT OF IGNITION TIMING AT CUT OUT
    10.
    发明申请
    ADJUSTMENT OF IGNITION TIMING AT CUT OUT 有权
    点火时间的调整

    公开(公告)号：US20160237977A1

    公开(公告)日：2016-08-18

    申请号：US15028223

    申请日：2014-09-22

    申请人： HUSQVARNA AB

    发明人： Johan Assargård ,  Ricky Sundkvist ,  Stefan Wixe ,  Martin Axelsson

    IPC分类号： F02P9/00 ,  F02B25/00 ,  F02B63/02

    CPC分类号： F02P9/005 ,  F02B25/00 ,  F02B25/16 ,  F02B63/02 ,  F02B2075/025 ,  F02D41/1497 ,  F02D41/22 ,  F02D2400/06 ,  F02M17/04 ,  F02P5/145 ,  F02P5/1502 ,  Y02T10/46

    摘要： An internal combustion engine (1) may include a combustion chamber (41) into which a mixture (40) of fuel and air is supplied, a spark plug (50) disposed proximate to the combustion chamber (41) to ignite the mixture (40) by generating a spark such that ignition of the mixture drives a piston (6) operably coupled to a crank portion (12) of the engine (1), a speed sensor (102) configured to determine engine speed, and an electronic control unit (100) configured to control operation of the spark plug (50). The electronic control unit (100) may be configured to initiate a speed limitation operation in response to engine speed reaching a cut out speed threshold and to control ignition timing within an operating band (320) of ignition angles prior to engine speed reaching the cut out speed threshold. The speed limitation operation may include skipping application of sparks. The electronic control unit (100) is further configured to apply a changed ignition angle (330) relative to the operating band (320) for first at least one spark initiated after the speed limitation operation.

    摘要翻译： 内燃机（1）可以包括燃烧室（41），燃料和空气的混合物（40）被供应到燃烧室中，靠近燃烧室设置的火花塞，以点燃混合物（40） ），使得混合物的点火驱动可操作地联接到发动机（1）的曲柄部分（12）的活塞（6），配置成确定发动机转速的速度传感器（102）和电子控制单元 （100），其被配置为控制所述火花塞（50）的操作。 电子控制单元（100）可以被配置为响应于发动机速度达到切断速度阈值而启动速度限制操作，并且在发动机速度达到切断之前控制点火角度的工作频带（320）内的点火正时 速度阈值。 速度限制操作可以包括跳过火花的应用。 电子控制单元（100）还被配置为相对于工作带（320）施加改变的点火角（330），用于在速度限制操作之后首先启动至少一个火花。