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27 条记录 (耗时 0.023 秒)

    Stratified scavenged two-stroke engine
    21.
    发明授权
    Stratified scavenged two-stroke engine 失效
    分层清扫二冲程发动机

    公开(公告)号：US07210433B2

    公开(公告)日：2007-05-01

    申请号：US11506334

    申请日：2006-08-18

    申请人： Nagesh S. Mavinahally ,  Jay S. Veerathappa

    发明人： Nagesh S. Mavinahally ,  Jay S. Veerathappa

    IPC分类号： F02B33/04 ,  F02B25/00

    CPC分类号： F02B25/22 ,  F01L7/06 ,  F02B17/00 ,  F02B25/14 ,  F02B33/04 ,  F02B2075/025 ,  F02D9/16

    摘要： A two-stroke internal combustion engine includes dual transfer passages in gaseous communication between a crankcase chamber and a combustion chamber of the engine, an air passage through the crankcase to the crankcase chamber and in gaseous communication with a carburetor of the engine. A rotatable circular disk or crank-web is rotatably connected to a crankshaft. A piston may be used to open and close a top end of the passages. An air inlet port to the transfer passage for stratified scavenging is opened and closed by the crank-web that has passages and cutouts. The rotary valve replaces the one-way reed valve used in stratified scavenged and charged two-stroke engines. The air passes from lower ends of the transfer passages to top ends and into the crankcase through a piston passage, through the adjacent transfer passages directly, or through a passage in the piston into the crankcase.

    摘要翻译： 二冲程内燃机包括在曲轴箱室和发动机的燃烧室之间气态连通的双重传送通道，通过曲轴箱的空气通道到曲轴箱室并与发动机的化油器气态连通。 可旋转的圆盘或曲柄腹板可旋转地连接到曲轴。 可以使用活塞来打开和关闭通道的顶端。 用于分层清扫的输送通道的进气口由具有通道和切口的曲柄腹板打开和关闭。 旋转阀代替分层清扫充电二冲程发动机中使用的单向簧片阀。 空气从传送通道的下端通过活塞通道，直接通过相邻传送通道，或通过活塞中的通道进入曲轴箱，从传送通道的下端传递到顶端并进入曲轴箱。

    Performance improvement design for two-stroke engines
    22.
    发明授权
    Performance improvement design for two-stroke engines 失效
    二冲程发动机的性能改进设计

    公开(公告)号：US5425346A

    公开(公告)日：1995-06-20

    申请号：US120545

    申请日：1993-09-14

    申请人： Nagesh S. Mavinahally

    发明人： Nagesh S. Mavinahally

    IPC分类号： F01L7/12 ,  F01L7/18 ,  F01P1/04 ,  F02B25/14 ,  F02B25/22 ,  F02B75/02 ,  F02M25/07

    CPC分类号： F01P1/04 ,  F01L7/12 ,  F01L7/18 ,  F02B25/14 ,  F02B25/22 ,  F02M26/37 ,  F02M26/41 ,  F02B2075/025 ,  F02M2026/009

    摘要： A two stroke engine having a variable inlet port timing device in conjunction with a piston port controlled timing apparatus for filling the top of transfer passages, that connect the crankcase chamber to the combustion chamber of the engine, with buffer gas such as exhaust gas or secondary air for the reduction of pollutants, improvement of performance, and delivery ratio of an internal combustion two-stroke engine and the like. Piston port controlled timing is provided by buffer air passages having a movable portion with inlet and outlet ports disposed through the piston. In another embodiment piston controlled selective exhaust gas recirculation is provided and a rotary valve in the exhaust gas recirculation passage is fitted to improve the performance of the engine. The pressure in the crankcase may be controlled by a rotary valve comprises a pair of rotary disc plates.

    摘要翻译： 具有可变入口端口正时装置的二冲程发动机与活塞端口控制的定时装置结合，用于填充将曲轴箱室连接到发动机的燃烧室的传送通道的顶部，具有缓冲气体，例如废气或二次 用于减少污染物的空气，性能提高和内燃二冲程发动机的输送比等。 活塞端口控制定时由具有可移动部分的缓冲空气通道提供，其中入口和出口设置穿过活塞。 在另一个实施例中，提供活塞控制的选择性排气再循环，并且装配排气再循环通道中的旋转阀以改善发动机的性能。 曲轴箱中的压力可以由包括一对旋转盘板的旋转阀来控制。

    Continuously variable volume scavenging passage for two-stroke engines
    23.
    发明授权
    Continuously variable volume scavenging passage for two-stroke engines 失效
    二冲程发动机连续可变容积扫气通道

    公开(公告)号：US5379732A

    公开(公告)日：1995-01-10

    申请号：US151177

    申请日：1993-11-12

    申请人： Nagesh S. Mavinahally ,  Pushpalatha S. Mavinahally

    发明人： Nagesh S. Mavinahally ,  Pushpalatha S. Mavinahally

    IPC分类号： F01P1/04 ,  F02B25/22 ,  F02B75/02 ,  F02D9/02 ,  F02F1/22

    CPC分类号： F02B25/22 ,  F01P1/04 ,  F02F1/22 ,  F02B2075/025 ,  F02D2009/0291

    摘要： A variable volume transfer duct for maintaining an optimum volume of buffer gas in the transfer duct of a two-stroke engine during operation in order to minimize short circuit loss of fresh charge at all load levels during engine operation. The variable volume transfer duct that has two pieces, a top and a bottom duct wherein the bottom duct is aligned with and slidably disposed within the upper duct. Control means are provided for raising and lowering of the bottom duct to vary the transfer duct volume accordingly. A control means controls recirculates exhaust gas, or the secondary air, as buffer gas that fills the top of the transfer passage and regulates the buffer gas according to engine load conditions such that it provides a larger amount at higher loads and a lesser quantity at lighter loads.

    摘要翻译： 一种可变体积输送管道，用于在运行期间保持二冲程发动机的输送管道中缓冲气体的最佳体积，以便在发动机运转期间使所有负载水平下的新鲜电荷的短路损失最小化。 具有两个部件的可变体积传送管道，一个顶部管道和一个底部管道，其中底部管道与上部管道对齐并且可滑动地设置在上部管道内。 提供控制装置用于升高和降低底部管道以相应地改变输送管道体积。 控制装置控制再循环废气或二次空气作为填充输送通道顶部的缓冲气体，并根据发动机负载条件调节缓冲气体，使得其在较高负载下提供较大量，在较轻的位置提供较少的量 负载

    Two-stroke engine with fuel injection
    27.
    发明授权
    Two-stroke engine with fuel injection 失效
    二冲程发动机燃油喷射

    公开(公告)号：US07331315B2

    公开(公告)日：2008-02-19

    申请号：US11351318

    申请日：2006-02-09

    申请人： Nagesh S. Mavinahally

    发明人： Nagesh S. Mavinahally

    IPC分类号： F02B25/16

    CPC分类号： F02B25/00

    摘要： A two-stroke internal combustion engine is provided with a fuel injector. The two-stroke internal combustion engine may have at least one transfer passage, an air channel, and a fuel injector. The transfer passage is between a crankcase and a combustion chamber of the engine. The air channel is in gaseous communication with a top portion of the transfer channel. The fuel injector is in gaseous communication with the air channel and injects fuel into the air channel. The two-stroke engine may be used on hand-held, lawn and garden equipment.

    摘要翻译： 二冲程内燃机设置有燃料喷射器。 二冲程内燃机可以具有至少一个输送通道，空气通道和燃料喷射器。 传送通道位于发动机的曲轴箱和燃烧室之间。 空气通道与传送通道的顶部部分气态连通。 燃料喷射器与空气通道气体连通并将燃料喷射到空气通道中。 二冲程发动机可用于手持式草坪和花园设备。