公开(公告)号：US07325528B2

公开(公告)日：2008-02-05

申请号：US11333278

申请日：2006-01-18

申请人： Eberhard Schieber ,  Heinrich Leufen ,  Mohamed Abou-Aly ,  Hans Nickel ,  Heiko Rosskamp ,  Jörg Schlossarczyk ,  Klaus Geyer

发明人： Eberhard Schieber ,  Heinrich Leufen ,  Mohamed Abou-Aly ,  Hans Nickel ,  Heiko Rosskamp ,  Jörg Schlossarczyk ,  Klaus Geyer

IPC分类号： F02B75/02 ,  F02B61/02 ,  F02P5/00

CPC分类号： F02B25/14 ,  F02D37/02 ,  F02D41/061 ,  F02D41/08 ,  F02D41/1497 ,  F02D41/22 ,  F02D41/3058 ,  F02D2200/1012 ,  F02D2200/1015 ,  F02D2400/04 ,  F02D2400/06 ,  F02P5/045

摘要： The invention is directed to a method for operating a two-stroke engine having a cylinder in which a combustion chamber is formed and which includes devices for metering fuel and supplying combustion air as well as an ignition device for igniting a mixture in the combustion chamber. In the method, fuel and combustion air are supplied to the engine and the mixture in the combustion chamber is ignited. The combustion chamber is delimited by a piston which drives a crankshaft rotatably journalled in a crankcase. A control is provided which controls the metering of fuel and the ignition of the mixture in the combustion chamber. In the method, the two-stroke engine is controlled in at least one operating state so that the number of combustions is less than the number of revolutions of the crankshaft in the same time interval.

摘要翻译： 本发明涉及一种用于操作具有气缸的二冲程发动机的方法，其中形成有燃烧室，并且包括用于计量燃料和供应燃烧空气的装置以及用于点燃燃烧室中的混合物的点火装置。 在该方法中，将燃料和燃烧空气供给到发动机，并且燃烧室中的混合物被点燃。 燃烧室由活塞驱动，该曲轴可旋转地轴颈安装在曲轴箱中。 提供控制燃料的燃料计量和燃烧室中的混合物点燃的控制。 在该方法中，二冲程发动机被控制在至少一个操作状态，使得燃烧次数小于曲轴在同一时间间隔内的转数。

公开(公告)号：US06851403B2

公开(公告)日：2005-02-08

申请号：US09945230

申请日：2001-08-31

申请人： Bernhard Dürr ,  Bruhns Imke ,  Jürgen Häberlein ,  Harald Schliemann ,  Jörg Schlossarczyk ,  Manfred Rabis

发明人： Bernhard Dürr ,  Bruhns Imke ,  Jürgen Häberlein ,  Harald Schliemann ,  Jörg Schlossarczyk ,  Manfred Rabis

IPC分类号： F01L1/12 ,  F01L1/18 ,  F01L1/20 ,  F02B63/02 ,  F02B75/02 ,  F02B75/16

CPC分类号： F02B75/16 ,  F01L1/18 ,  F01L1/20 ,  F02B63/02 ,  F02B2075/027 ,  F02B2275/34

摘要： A valve drive having a rocker arm mounted on a cylinder head is provided. One end of the rocker arm is actuated by a push rod to actuate a valve stem of a poppet valve that engages the other end of the rocker arm, which is pivotably held between its ends on a support pin that extends into the cylinder head, with a spherical mounting being provided between the support pin and the rocker arm. Provided on that side of the rocker arm remote from the cylinder head is a bolt head for adjusting the bearing spacing between the rocker arm and the cylinder head for adjusting valve play. To prevent unintended adjustment of the bolt head, the latter cooperates with a rotation preventing element that has an arresting portion that engages the bolt head, and a support portion that conveys the adjustment moment away.

摘要翻译： 提供具有安装在气缸盖上的摇臂的阀驱动器。 摇臂的一端由推杆致动，以启动提升阀的阀杆，其接合摇臂的另一端，摇臂的另一端可枢转地保持在其端部之间延伸到气缸盖中的支撑销上， 在支撑销和摇臂之间设置有球面安装件。 在靠近气缸盖的摇臂的那一侧设置有用于调节摇臂和气缸盖之间的轴承间距的螺栓头，用于调节阀的游隙。 为了防止螺栓头的意外调整，后者与具有接合螺栓头的止动部分的旋转阻止元件和传递调节力矩的支撑部分配合。

公开(公告)号：US06736240B2

公开(公告)日：2004-05-18

申请号：US09944764

申请日：2001-08-31

申请人： Bernhard Dürr ,  Harald Schliemann ,  Manfred Rabis ,  Jörg Schlossarczyk

发明人： Bernhard Dürr ,  Harald Schliemann ,  Manfred Rabis ,  Jörg Schlossarczyk

IPC分类号： F01M100

CPC分类号： F01M9/10 ,  F01M3/00

摘要： A cam drive is provided for a valve control of a mixture-lubricated internal combustion engine that has a cylinder, and a cylinder head in which is disposed a poppet valve which is actuated by a pivotable rocker arm. Mounted in a cam chamber is a control cam that is driven by the crankshaft of the engine and on the cam path of which rests a drag lever that transfers the cam lift to the rocker arm. To achieve a reliable mixture lubrication, a flow guidance element is disposed in the annular chamber between the peripheral wall of the cam chamber and the maximum diameter of the path of a cam nose. The flow guidance element is provided with a flow edge that is disposed adjacent to the drag lever in the vicinity of the path diameter of the cam nose.

摘要翻译： 提供一种凸轮驱动器，用于具有气缸的混合物润滑的内燃机的阀控制，以及气缸盖，其中设置有由可枢转的摇臂驱动的提升阀。 安装在凸轮室中的是由发动机的曲轴驱动的控制凸轮，并且在其凸轮路径上设有将凸轮升程转移到摇臂的牵引杆。 为了实现可靠的混合润滑，流动引导元件设置在凸轮室的周壁和凸轮鼻的路径的最大直径之间的环形室中。 流动引导元件设置有在靠近凸轮鼻的路径直径附近设置在牵引杆附近的流动边缘。

公开(公告)号：US06715212B2

公开(公告)日：2004-04-06

申请号：US10162906

申请日：2002-06-06

申请人： Bernhard Dürr ,  Harald Schliemann ,  Jörg Schlossarczyk ,  Manfred Rabis

发明人： Bernhard Dürr ,  Harald Schliemann ,  Jörg Schlossarczyk ,  Manfred Rabis

IPC分类号： F01P102

CPC分类号： F02M35/1017 ,  B27B17/08 ,  F02B63/02 ,  F02B75/16 ,  F02B2075/027 ,  F02M35/024

摘要： A portable handheld work apparatus such as a motor-driven chain saw includes a housing (6) of a drive unit (2). The following are mounted in the housing (6): an internal combustion engine (3), a carburetor (4) for fuel metering and an air filter (5) as well as a fuel tank (8). The air filter (5) is mounted ahead of the carburetor in the flow direction of the fresh air flow. A largest possible filter action is obtained with a compact configuration in that a housing (10) of the air filter (5) lies at least partially in a space between the carburetor (4) and the fuel tank (8).

摘要翻译： 诸如电动链锯的便携式手持式工作装置包括驱动单元（2）的壳体（6）。 以下安装在壳体（6）中：内燃机（3），用于燃料计量的化油器（4）和空气过滤器（5）以及燃料箱（8）。 空气过滤器（5）在新鲜空气流的流动方向上安装在化油器的前面。 通过紧凑的结构获得最大可能的过滤作用，其中空气过滤器（5）的壳体（10）至少部分位于化油器（4）和燃料箱（8）之间的空间中。

公开(公告)号：US06681726B2

公开(公告)日：2004-01-27

申请号：US10162898

申请日：2002-06-06

申请人： Peter Linsbauer ,  Jörg Schlossarczyk ,  Uwe Janoske

发明人： Peter Linsbauer ,  Jörg Schlossarczyk ,  Uwe Janoske

IPC分类号： F01P704

CPC分类号： F02M35/022 ,  F01P5/02 ,  F01P11/12 ,  F02B63/02 ,  Y10S55/28

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。