Muffler arrangement for an internal combustion engine
    1.
    发明授权
    Muffler arrangement for an internal combustion engine 有权
    用于内燃机的消声器装置

    公开(公告)号:US06910550B2

    公开(公告)日:2005-06-28

    申请号:US10251866

    申请日:2002-09-23

    摘要: A muffler arrangement includes an exhaust-gas muffler, which is subdivided into an inlet space and an outlet space. An exhaust-gas stub of an internal combustion engine opens into the inlet space. Exhaust gas is conducted from the outlet space into an air channel via an exhaust-gas outlet. The air channel is formed between the housing of the exhaust-gas muffler and an outer cover and extends along a side of the exhaust-gas muffler. A cooling-air component flow is branched from a cooling-air flow of a cooling-air blower and enters at a first end of the air channel. The cooling-air component flow exits again at the second end of the air channel. In order to reduce the discharge temperature of the exhaust gas (especially with the arrangement of a catalytic converter), it is provided that the exhaust-gas jet is conducted in the air channel in spaced relationship to the air channel walls and is essentially surrounded on its path to the air channel outlet window by the supplied cooling-air component flow so that the exhaust-gas jet forms a core flow and the cooling-air component flow forms a cover flow surrounding the core flow.

    摘要翻译: 消声器装置包括废气消声器,废气消声器被细分成入口空间和出口空间。 内燃机的排气短路通向入口空间。 废气通过排气出口从出口空间传送到空气通道。 空气通道形成在排气消声器的外壳和外盖之间,并且沿废气消声器的一侧延伸。 冷却空气组分流从冷却风鼓风机的冷却气流分支,并进入空气通道的第一端。 冷却空气组分流在空气通道的第二端再次离开。 为了降低废气的排放温度(特别是在催化转化器的排列方面),排气气体在空气通道中以与空气通道壁隔开的关系传导,并且基本上被包围在 其通过所提供的冷却空气组分流动到空气通道出口窗口的路径,使得废气喷射形成芯流,并且冷却空气组分流形成围绕芯流的覆盖流。

    Intake system for the combustion air of an internal combustion engine in a portable handheld work apparatus
    2.
    发明授权
    Intake system for the combustion air of an internal combustion engine in a portable handheld work apparatus 有权
    用于便携式手持式工作装置中的内燃机的燃烧空气的进气系统

    公开(公告)号:US06681726B2

    公开(公告)日:2004-01-27

    申请号:US10162898

    申请日:2002-06-06

    IPC分类号: F01P704

    摘要: The invention relates to an intake system (1) for the combustion air (2) of an internal combustion engine (3) in a portable handheld work apparatus (4). The intake system (19) includes a filter housing (5) having an air filter (6) for purifying the combustion air (2). The clean space (8) of the air filter (6) is fluidly connected to an outlet opening (10) of the filter housing (5). The outlet opening (10) communicates with a carburetor (7) of the engine (3). A centrifugal-force separator (13) is mounted forward of the air filter (6) for separating large amounts of dust in the inducted combustion air (2). The separator (13) is so positioned ahead of the filter housing (5) that a central core flow (14) of the separator has a lower particle density (15) and is supplied to the filter (6). A tangential flow (16) surrounds the central core flow (14) in the interior of the separator (13). The tangential flow (16) has a great amount of dust or dirt and is conducted away via the suction side (11) of a blower (12), especially of a cooling-air blower (19) of the engine (3) having vanes on the back side thereof.

    摘要翻译: 本发明涉及一种用于便携式手持式工作装置(4)中的内燃机(3)的燃烧空气(2)的进气系统(1)。 进气系统(19)包括具有用于净化燃烧空气(2)的空气过滤器(6)的过滤器壳体(5)。 空气过滤器(6)的清洁空间(8)流体地连接到过滤器壳体(5)的出口(10)。 出口(10)与发动机(3)的化油器(7)连通。 离心力分离器(13)安装在空气过滤器(6)的前方,用于分离引入的燃烧空气(2)中的大量灰尘。 分离器(13)位于过滤器壳体(5)的前方,使得分离器的中心芯流(14)具有较低的颗粒密度(15)并且被供应到过滤器(6)。 切向流(16)包围分离器(13)内部的中心芯流(14)。 切向流(16)具有大量的灰尘或污垢,并且经由鼓风机12的吸入侧(11),特别是发动机(3)的冷却风扇(19)的吸入侧(11)导出,该鼓风机具有叶片 在其背面。

    Cleaning arrangement for the combustion air of an internal combustion engine
    3.
    发明授权
    Cleaning arrangement for the combustion air of an internal combustion engine 有权
    用于内燃机的燃烧空气的清洁装置

    公开(公告)号:US06758186B2

    公开(公告)日:2004-07-06

    申请号:US10162902

    申请日:2002-06-06

    申请人: Uwe Janoske

    发明人: Uwe Janoske

    IPC分类号: F01P102

    CPC分类号: B01D50/002

    摘要: The cleaning arrangement (1) is provided for the combustion air (2) of an internal combustion engine (3) in a portable handheld work apparatus such as a cutoff machine. The cleaning arrangement is formed from a filter housing (4) which contains an air filter (5) in order to ensure a disturbance-free operation especially for a dust-laden ambient air of the work apparatus. The air filter (5) partitions the filter housing (4) into a contaminant space (7) and a clean space (8). The clean space side (8) is connected to a carburetor (9) of the engine (3). To minimize the dust deposit on the contaminant space side of the air filter (5), a centrifugal-force separator (11) is arranged in the filter housing (4) and is charged with combustion air (2) which is supplied under pressure by a cooling air fan (30) via a feed channel (24) to the separator (11). In the centrifugal-force separator (11), the combustion air (2), which is laden with dust (33), is divided into a tangential flow (14) having a higher particle density (15) and a core flow (12) having a low particle density (13). The core flow (12) is supplied to the contaminant chamber (7) of the filter housing (4).

    摘要翻译: 在便携式手持式工作装置(例如切断机)中,为内燃机(3)的燃烧空气(2)提供清洁装置(1)。 清洁装置由包含空气过滤器(5)的过滤器壳体(4)形成,以便确保无扰动操作,特别是对于工作装置的灰尘环境空气。 空气过滤器(5)将过滤器壳体(4)分隔成污染空间(7)和清洁空间(8)。 清洁空间侧(8)连接到发动机(3)的化油器(9)。 为了最小化空气过滤器(5)的污染空间侧的灰尘沉积物,在过滤器壳体(4)中布置有离心力分离器(11),并且在空气过滤器(5)的空气过滤器(5) 冷却风扇(30)经由供给通道(24)到达分离器(11)。 在离心力分离器(11)中,具有灰尘(33)的燃烧空气(2)被分成具有较高颗粒密度(15)和芯流(12)的切向流(14) 具有低的颗粒密度(13)。 芯流(12)被供应到过滤器壳体(4)的污染室(7)。