Fuel injection arrangement
    11.
    发明授权
    Fuel injection arrangement 失效
    燃油喷射装置

    公开(公告)号:US4932370A

    公开(公告)日:1990-06-12

    申请号:US407338

    申请日:1989-09-14

    摘要: Fuel injection arrangements having pneumatically driven injection pumps utilize the fluctuating crankcase pressure whereby the injection time point is fixed by the system. The injection time point can be fixed so as to depart from the course of the pressure in the crankcase if the crankcase pressure is applied to the injection pump via an opening controlled by the piston and if the pressure drop is directed to the combustion chamber via a relief opening. However, it has been shown that this kind of control produces considerable problems with respect to fast-running two-stroke engines. Accordingly, it is a feature of the invention to provide a check valve in the connection between the relief opening and the injection pump and to position this check valve so that it opens in the flow direction toward the combustion chamber. In this way, high pressures which occur as a consequence of incomplete or irregular combustions in the combustion chamber cannot have a feedback effect on the injection pump and the quantity injected is not increased in a disadvantageous manner for the next cycle.

    摘要翻译: 具有气动喷射泵的燃料喷射装置利用波动的曲轴箱压力,由此喷射时间点被系统固定。 如果通过由活塞控制的开口将曲轴箱的压力施加到喷射泵上,并且如果压降经由燃烧室被引导到燃烧室,喷射时间点可以被固定以便脱离曲轴箱内的压力的过程 救济开放。 然而,已经表明,这种控制对于快速行驶的二冲程发动机产生相当大的问题。 因此,本发明的一个特征是提供一种止回阀,该止回阀位于该释放开口和该注射泵之间的连接中,并将该止回阀定位成使得其朝向燃烧室的流动方向开口。 以这种方式,由于燃烧室中不完全或不规则的燃烧而发生的高压不能对注射泵产生反馈效应,并且在下一循环中不利的方式不会增加注入的量。

    Fuel injection pump for a two-stroke engine
    12.
    发明授权
    Fuel injection pump for a two-stroke engine 失效
    二冲程发动机燃油喷射泵

    公开(公告)号:US4846119A

    公开(公告)日:1989-07-11

    申请号:US231892

    申请日:1988-08-12

    摘要: A pneumatically operated fuel injection pump has a work chamber which is partitioned by a membrane into a pulse chamber and a return chamber. The pulse chamber is charged with crankcase pressure from a two-stroke engine while a counterforce is built up in the return chamber which varies with rotational speed. A counterforce is developed by means of a precise pressure control in the return chamber which makes possible a highly precise injection adapted to rotational speed. For this purpose, the return chamber is connected with an adjusting volume via a throttled flow path. In addition, a leaf spring is mounted in the return chamber and is utilized as a return spring for the membrane.

    摘要翻译: 气动燃料喷射泵具有工作室,该工作室由隔膜分隔成脉冲室和返回室。 脉冲室由二冲程发动机充满曲轴箱压力,而反作用力在回转室中建立,随着转速变化。 通过在返回室中的精确的压力控制来开发反作用力,这使得可以进行适应于转速的高精度喷射。 为此,回流室通过节流流路连接调节体积。 另外,一个板簧安装在返回室中,并被用作膜的复位弹簧。

    Two-stroke engine
    13.
    发明授权
    Two-stroke engine 失效
    二冲程发动机

    公开(公告)号:US4876999A

    公开(公告)日:1989-10-31

    申请号:US261779

    申请日:1988-10-24

    摘要: The invention relates to a two-stroke engine having an overflow channel through which an air/fuel mixture is supplied. The overflow channel is provided with a vaporization chamber having a hot wall against which fuel is injected and vaporized. The vaporized fuel is stored in the vaporization chamber and is carried into the combustion chamber of the engine by fresh air flowing in from the crankcase when the overflow channel is opened. Even at high rotational speed, a good mixture preparation is asssured.

    摘要翻译: 本发明涉及一种具有溢流通道的二冲程发动机,空气/燃料混合物通过该溢流通道供应。 溢流通道设置有具有热壁的蒸发室,燃料被喷射和蒸发。 蒸发的燃料储存在蒸发室中,并且当溢流通道打开时,通过从曲轴箱流入的新鲜空气将其运送到发动机的燃烧室中。 即使在高转速下,也可以确定良好的混合物制备。

    Hand-held working tool
    14.
    发明授权
    Hand-held working tool 失效
    手持式工具

    公开(公告)号:US06314922B1

    公开(公告)日:2001-11-13

    申请号:US09360107

    申请日:1999-07-23

    IPC分类号: F01P704

    摘要: A hand-held working tool has a housing and an internal combustion engine arranged in the housing and comprising a crankshaft and an air filter. A tool is driven by the crankshaft of the internal combustion engine. A fan housing is attached to the engine housing and has an air inlet. A fan wheel is arranged in the fan housing and is driven by the crankshaft of the internal combustion engine to supply cooling air, sucked in through the air inlet, to the internal combustion engine. The fan housing has a bottom extending radially to the crankshaft. The bottom and a side of the fan wheel facing the bottom define a chamber in the fan housing. The bottom has a combustion air outlet. A combustion air channel is connected to the combustion air outlet and to the air filter. The combustion air outlet is axially supplying combustion air from the chamber through the combustion air channel into the air filter of internal combustion engine. The fan housing has a channel wall having a bottom portion connected to the face of the bottom remote from the fan wheel and covering the bottom partially to form a double-walled bottom. The end face portion of the combustion air channel is defined by the bottom and the bottom portion of the channel wall. In an alternative embodiment the combustion air channel is provided in a hollow beam of a support that supports the drive unit of the working tool.

    摘要翻译: 一种手持式工具具有壳体和布置在壳体中的内燃机,包括曲轴和空气过滤器。 工具由内燃机的曲轴驱动。 风扇壳体附接到发动机壳体并具有进气口。 风扇轴设置在风扇壳体中,并由内燃机的曲轴驱动,以将通过空气入口吸入的冷却空气供给到内燃机。 风扇壳体具有径向延伸到曲轴的底部。 风扇轮的底部和面向底部的一侧限定了风扇壳体中的室。 底部有一个燃烧空气出口。 燃烧空气通道连接到燃烧空气出口和空气过滤器。 燃烧空气出口轴向地将来自腔室的燃烧空气通过燃烧空气通道供应到内燃机的空气过滤器中。 风扇壳体具有通道壁,该通道壁的底部连接到远离风扇叶的底部的表面,并部分地覆盖底部以形成双壁底部。 燃烧空气通道的端面部分由通道壁的底部和底部限定。 在替代实施例中,燃烧空气通道设置在支撑工作工具的驱动单元的支撑件的中空梁中。

    Tensioning arrangement for a saw chain of a motor-driven chain saw
    15.
    发明授权
    Tensioning arrangement for a saw chain of a motor-driven chain saw 失效
    电动链锯锯链的张紧布置

    公开(公告)号:US5522143A

    公开(公告)日:1996-06-04

    申请号:US338874

    申请日:1994-11-14

    IPC分类号: B23D57/02 B27B17/14

    CPC分类号: B27B17/14

    摘要: The invention is directed to a tensioning arrangement for saw chains of motor-driven chain saws which include a device for longitudinally displacing the guide bar. The clamped guide bar is released so that the adjusting arrangement can be actuated for the longitudinal displacement of the guide bar. By rotating a disc having a spiral slot, a slide piece, which is coupled to the guide bar, is displaced in the longitudinal direction. Assembly is simplified and handling facilitated when the tension in the saw chain is adjusted. This is achieved by making the slide piece on the spiral disc so that it is not released therefrom but instead is held so as to be rotationally and longitudinally displaceable. The slide piece is fixedly connected to the guide bar by using appropriate attachment devices.

    摘要翻译: 本发明涉及一种用于电动链锯的锯链的张紧装置,其包括用于纵向移位导向杆的装置。 夹紧的导杆被释放,使得调节装置可以被致动以引导杆的纵向位移。 通过旋转具有螺旋槽的盘,联接到导杆的滑动件在纵向方向上移位。 当锯链中的张力被调整时,装配被简化和处理。 这是通过将滑动片制成螺旋盘而使其不被释放而是被保持为可旋转和纵向移位的。 滑块通过使用适当的附接装置固定地连接到导杆。

    Tensioning arrangement for a saw chain
    16.
    发明授权
    Tensioning arrangement for a saw chain 失效
    锯链的张紧布置

    公开(公告)号:US5491899A

    公开(公告)日:1996-02-20

    申请号:US296153

    申请日:1994-08-29

    IPC分类号: B27B17/14

    CPC分类号: B27B17/14 Y10T83/7239

    摘要: The invention is directed to a tensioning arrangement for a saw chain of a motor-driven chain saw. The saw chain runs on a guide bar mounted on the motor housing of the chain saw. The tensioning arrangement includes a rotatable disc having a spirally-shaped guide slot in which a lug of a slide piece engages. The longitudinal displacement of the guide bar is provided by rotating the disc. The guide slot in the disc extends over a rotational angle of at least 270.degree.. A still lesser slope of the guide slot is provided with a rotational angle in the range of 360.degree. to 450.degree.. The tensioning arrangement is especially suitable for adjusting the guide bar in motor-driven chain saws thereby adjusting the tension in the saw chain.

    摘要翻译: 本发明涉及一种用于电动链锯锯锯的张紧装置。 锯链在安装在链锯的马达壳体上的导杆上运行。 张紧装置包括具有螺旋状导向槽的可旋转盘,其中滑块的凸耳接合在其中。 通过旋转盘来提供导杆的纵向位移。 盘中的引导槽在至少270°的旋转角度上延伸。 引导槽的较小的斜面设置有360°至450°范围内的旋转角度。 张紧装置特别适用于调整电动链锯中的导杆,从而调节锯链中的张力。

    Two-stroke engine, sand core for producing a two-stroke engine, and method for operating a two-stroke engine
    18.
    发明授权
    Two-stroke engine, sand core for producing a two-stroke engine, and method for operating a two-stroke engine 有权
    用于生产二冲程发动机的二冲程发动机,砂芯和用于操作二冲程发动机的方法

    公开(公告)号:US09175598B2

    公开(公告)日:2015-11-03

    申请号:US12968298

    申请日:2010-12-15

    摘要: A two-stroke engine has a cylinder with a combustion chamber and a reciprocating piston for driving a crankshaft. Transfer passages connect the crankcase in at least one position of the piston with the combustion chamber and open by piston-controlled transfer ports into the combustion chamber. An inlet opens into the crankcase and an outlet is provided at the combustion chamber. The engine is dividable into four sectors parallel to a longitudinal cylinder axis. The transfer port of a first transfer passage is arranged in the first sector, the outlet is arranged in the second sector, the transfer port of a second transfer passage is provided in the third sector, and the inlet is arranged in the fourth sector. Within the cylinder the first and second transfer passages, at a spacing from a separation plane between cylinder and crankcase, pass together into one of the second and fourth sectors.

    摘要翻译: 二冲程发动机具有带燃烧室的气缸和用于驱动曲轴的往复活塞。 输送通道将曲轴箱在活塞的至少一个位置与燃烧室连接,并由活塞控制的输送口打开到燃烧室中。 入口通向曲轴箱,在燃烧室设有出口。 发动机可分为平行于纵向气缸轴线的四个扇区。 第一传送通道的传送口设置在第一扇区中,出口布置在第二扇区中,第二传送通道的传送端口设置在第三扇区中,并且入口布置在第四扇区中。 在气缸内,在与气缸和曲轴箱之间的分离平面的间隔处的第一和第二传送通道一起进入第二和第四扇区中的一个。

    COMPUTER SYSTEM AND METHOD FOR SENTIMENT-BASED RECOMMENDATIONS OF DISCUSSION TOPICS IN SOCIAL MEDIA
    20.
    发明申请
    COMPUTER SYSTEM AND METHOD FOR SENTIMENT-BASED RECOMMENDATIONS OF DISCUSSION TOPICS IN SOCIAL MEDIA 审中-公开
    社会媒体讨论主题的基于推荐的推荐计算机系统与方法

    公开(公告)号:US20120179751A1

    公开(公告)日:2012-07-12

    申请号:US13080939

    申请日:2011-04-06

    IPC分类号: G06F15/16

    CPC分类号: G06Q30/0282 G06Q50/01

    摘要: An online discussion recommendation system ranks and presents to users of a social media site discussions of interest preferably calculated through interest-matching. The discussion has many online posts. The system and method determine which post to present to the user as a sample snippet from such discussion using sentiment analysis. The sentiment of the snippet may be most polarized, sentiment matching the user's current mood, typical user sentiment, or others.

    摘要翻译: 在线讨论推荐系统对社交媒体网站的用户进行排名和呈现,最好是通过兴趣匹配来计算兴趣。 讨论有很多在线帖子。 系统和方法通过使用情绪分析来确定向用户呈现哪个帖子作为样本片段。 片段的情绪可能最多极化,情绪匹配用户当前的心情,典型的用户情绪或其他。