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公开(公告)号：US4558566A
公开(公告)日：1985-12-17
申请号：US505240
申请日：1983-06-17
申请人： Masaru Shirakura
发明人： Masaru Shirakura
CPC分类号： F01N1/02 , F01N1/16 , F01N1/163 , F02B27/06 , Y02T10/146
摘要： An apparatus for controlling an exhaust system of an internal-combustion engine includes a resonance chamber having its terminating end closed and communicating with an intermediate portion of an exhaust passage of the engine, and a stop valve provided at the inlet of the resonance chamber for opening or closing the inlet in a predetermined operation region of the engine. The stop valve is actuated to effect its opening/closing operation in accordance with a predetermined operation region of the engine by means of a governor mechanism actuated in response to the rotation of a crankshaft of the engine. Through the opening/closing control effected by the stop valve, the natural frequency of the exhaust system is controlled in accordance with the operating conditions of the engine, thereby allowing the intake efficiency of the engine to be raised over a wide operation range, from low speed to high speed. Accordingly, a high output is maintained at all times.
摘要翻译： 一种用于控制内燃机的排气系统的装置，其特征在于，具有其终端封闭且与所述发动机的排气通路的中间部连通的共鸣室，以及设置在所述共鸣室的入口处的开闭阀 或者在发动机的预定操作区域中关闭入口。 通过响应于发动机的曲轴的旋转而致动的调速器机构，致动止动阀以根据发动机的预定操作区域来实现其打开/关闭操作。 通过由截止阀进行的打开/关闭控制，根据发动机的运行条件来控制排气系统的固有频率，从而使发动机的进气效率从较低的运行范围提升 速度高速。 因此，始终保持高输出。
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公开(公告)号：US4285311A
公开(公告)日：1981-08-25
申请号：US61514
申请日：1979-07-27
申请人： Toshimitsu Iio
发明人： Toshimitsu Iio
CPC分类号： F02D13/0284 , F02B25/14 , F02D9/04 , F02B2075/025 , F02B61/02 , Y02T10/18
摘要： Two stroke engine having an exhaust port provided with a rotary type timing control valve at the upper portion thereof. The control valve is connected with a centrifugal actuator which is responsive to the engine speed so that the exhaust port is wide open under a high speed engine operation but covered at the upper portion by said control valve under a low speed operation to change the exhaust port timing.
摘要翻译： 具有排气口的二冲程发动机在其上部设置有旋转式正时控制阀。 控制阀与离心致动器连接，该离心致动器响应于发动机转速，使得排气口在高速发动机操作下是敞开的，但是在低速操作下由所述控制阀在上部被上部覆盖以改变排气口 定时。
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公开(公告)号：US4191138A
公开(公告)日：1980-03-04
申请号：US929231
申请日：1978-07-31
申请人： Eric Jaulmes
发明人： Eric Jaulmes
CPC分类号： F01L5/02 , F02B25/20 , F02B33/18 , F02F1/22 , F02B2075/025
摘要： A two-cycle internal combustion engine, comprising a first cylinder wherein an engine piston moves and a second cylinder wherein a movable balancing device moves, the internal faces of the engine piston and the movable balancing device delimiting the chamber of a crankcase pump, the outer face of the engine piston delimiting a combustion chamber and the outer face of the movable balancing device delimiting an auxiliary compression chamber.
摘要翻译： 一种双循环内燃机，包括发动机活塞移动的第一气缸和可移动平衡装置移动的第二气缸，发动机活塞的内表面和限定曲轴箱泵室的可动平衡装置，外部 限定燃烧室的发动机活塞的表面和限定辅助压缩室的可动平衡装置的外表面。
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公开(公告)号：US3817227A
公开(公告)日：1974-06-18
申请号：US23232572
申请日：1972-02-22
申请人： ONISHI S
发明人： ONISHI S
CPC分类号： F02B25/14 , F02B2075/025 , F02D9/00
摘要： A two-cycle internal combustion engine having an electric ignition system and characterized in that a suitably shaped recess is disposed inside the cylinder head, thereby forming a combustion chamber. A device for controlling the quantity of fuel supply and a device for controlling the flow of exhaust gas are operated relatively to each other in such a way that the flow of exhaust gas is increased or decreased in response to increase or decrease in the supply of fuel.
摘要翻译： 一种具有电点火系统的双循环内燃机，其特征在于，在气缸盖内设置适当形状的凹部，由此形成燃烧室。 用于控制燃料供应量的装置和用于控制废气流量的装置相互运行，使得废气流量响应于燃料供应的增加或减少而增加或减少 。
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公开(公告)号：US3190271A
公开(公告)日：1965-06-22
申请号：US34039064
申请日：1964-01-27
申请人： MCCULLOCH CORP
发明人： AUSTIN GUDMUNDSEN
CPC分类号： F02M69/10 , F02B25/20 , F02B33/04 , F02B2075/025 , F02M59/107 , F02M69/08 , Y10S123/05
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公开(公告)号：US11280254B2
公开(公告)日：2022-03-22
申请号：US16328385
申请日：2017-08-30
申请人： Cesar Mercier
发明人： Cesar Mercier
摘要： A two-stroke engine with valves near bottom dead center that are adapted to prevent intake charge from exiting exhaust ports, wherein the valves are actuated by air pressure difference.
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公开(公告)号：US20190257240A1
公开(公告)日：2019-08-22
申请号：US16308018
申请日：2017-05-30
申请人： EMAK S.P.A.
发明人： Marco FERRARI , Vincenzo GAGLIARDI
摘要： A two-stroke internal combustion engine includes: a piston-cylinder group defining a combustion and a pumping chamber, the piston mobile in the cylinder between a bottom dead center where the combustion chamber's volume is maximum and the pumping chamber's volume is minimum, and a top dead center, where the combustion chamber's volume is minimum and the pumping chamber's volume is maximum. The engine also includes an intake conduit communicating with the pumping chamber, an exhaust conduit communicating with the combustion chamber, at least a pair of transfer conduits allowing communication between the pumping and combustion chambers, and at least two primary channels in the piston, individually provided with an inlet facing onto the exhaust conduit and an outlet facing on a respective transfer conduit at least when the piston is at the top dead center. A lateral surface of the piston includes a lowering where the primary channels inlets are located.
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公开(公告)号：US10260411B2
公开(公告)日：2019-04-16
申请号：US14915164
申请日：2014-08-27
申请人： NEWLENOIR LIMITED
发明人： Ryan Bowen
摘要： A piston arrangement comprising a cylinder, a piston head movable along a piston axis within the cylinder, a con rod, and a track having a path; wherein the con rod has a first end which is coupled to the piston head and a second end which is coupled to the track; wherein the track is adapted to be moved relative to the cylinder and is shaped such that, as the track moves relative to the cylinder, the piston head moves in reciprocating motion along the piston axis in accordance with the path of the track; wherein the path of the track is shaped such that piston head displacement is non simple harmonic with respect to displacement of the track relative to the cylinder. Also an internal combustion engine including the piston arrangement.
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公开(公告)号：US09988971B2
公开(公告)日：2018-06-05
申请号：US14961910
申请日：2015-12-08
申请人： Yamabiko Corporation
IPC分类号： F02B25/00 , F02B25/20 , F02B25/14 , F02M1/02 , F02M17/02 , F02B25/02 , F02B75/02 , F02M19/06 , F02M35/10
CPC分类号： F02B25/20 , F02B25/02 , F02B25/14 , F02B75/02 , F02B2075/025 , F02M1/02 , F02M17/02 , F02M19/06 , F02M35/10275
摘要： An amount of air taken into an air leading type two-stroke engine is increased to enhance an engine output, and gas emission characteristic deterioration caused by blow-back is inhibited. An inhibition member 16 is disposed between a choke valve 4 in a full open position and a throttle valve 6 in a full open position. The inhibition member 16 includes, for example, a mesh member like a metal mesh. Mixed fuel containing oil is supplied to the air-fuel mixture channel 14. Numerous pores of the inhibition member 16 (mesh member) are occluded by a membrane of oil components of the mixed fuel. Consequently, entry of a blow-back flow of an air-fuel mixture from the air-fuel mixture channel 14 into the air channel 12 through the numerous pores of the flow inhibition member 16 (mesh member) can be inhibited.
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公开(公告)号：US09702318B2
公开(公告)日：2017-07-11
申请号：US14850559
申请日：2015-09-10
发明人： Werner Geyer
CPC分类号： F02F7/0039 , F02B25/14 , F02B25/20 , F02B75/02 , F02F1/22
摘要： A two-stroke engine has a cylinder with a combustion chamber formed therein. The combustion chamber is delimited by a piston. The cylinder has a base on which extends a partition plane whereat the cylinder is separated from a crankcase. The combustion chamber is, in at least one piston position, connected via at least one transfer channel to the crankcase interior. The transfer channel passes from the cylinder into the crankcase at at least one opening. A side wall of the transfer channel has, in the cylinder, a first region wherein the wall encloses an angle of 90° with the cylinder longitudinal axis. Between the first region and the opening as viewed in the cylinder circumferential direction is arranged a second wall region. The second region has a spacing, measured parallel to the cylinder longitudinal axis, to the partition plane. The spacing is greater than the spacing in the first region.
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