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    Working apparatus and a method for operating same
    4.
    发明授权
    Working apparatus and a method for operating same 有权
    工作装置及其操作方法

    公开(公告)号：US09109569B2

    公开(公告)日：2015-08-18

    申请号：US13474965

    申请日：2012-05-18

    申请人： Niels Kunert ,  Jürgen Aupperle ,  Michael Grether

    发明人： Niels Kunert ,  Jürgen Aupperle ,  Michael Grether

    IPC分类号： F02P5/00 ,  F02P5/15 ,  F02P5/02 ,  F02P5/04 ,  F02P3/055 ,  F02B63/02

    CPC分类号： F02P5/1508 ,  F02B63/02 ,  F02D2400/06 ,  F02P3/055 ,  F02P5/02 ,  F02P5/04 ,  F02P5/1504 ,  F02P5/1506 ,  Y02T10/46

    摘要： A working apparatus has an internal combustion engine which drives at least one tool via a clutch. The clutch starts the coupling process at an initial engagement speed when the internal combustion engine is accelerated. The internal combustion engine has a piston, an ignition device and an ignition timing control device. The control device provides a first ignition timing for idling and a second ignition timing for full load operation, which is earlier than the first ignition timing. A method for operating the working apparatus provides that the ignition timing is adjusted toward “late,” with respect to the first ignition timing, when the engine speed drops in a first speed range above the idling speed and below the initial engagement speed.

    摘要翻译： 工作装置具有通过离合器驱动至少一个工具的内燃机。 当内燃机加速时，离合器以初始接合速度开始联接过程。 内燃机具有活塞，点火装置和点火正时控制装置。 控制装置为空载运行提供第一点火正时和提供比第一点火正时更早的满载运行的第二点火正时。 一种操作该加工装置的方法，其特征在于，当所述发动机转速在空转速度以上且低于初始接合速度的第一速度范围内时，相对于所述第一点火正时，向所述“点火时刻”调整所述点火正时。

    Hand-held power tool
    5.
    发明授权
    Hand-held power tool 有权
    手持电动工具

    公开(公告)号：US08863705B2

    公开(公告)日：2014-10-21

    申请号：US13225789

    申请日：2011-09-06

    申请人： Niels Kunert ,  Michael Grether

    发明人： Niels Kunert ,  Michael Grether

    IPC分类号： F02B25/00 ,  F02B33/04 ,  F02B25/14 ,  F02B25/22 ,  F02B75/02 ,  F02B63/02

    CPC分类号： F02B25/14 ,  F02B25/22 ,  F02B33/04 ,  F02B63/02 ,  F02B2075/025

    摘要： A hand-held power tool has a two-stroke engine with a cylinder with combustion chamber and a piston disposed therein that drives a crankshaft supported in a crankcase. In at least one piston position, crankcase and combustion chamber are connected by a transfer passage. An air passage supplies in at least one piston position combustion air to the transfer passage. A mixture passage for fuel/air mixture is provided. Air and mixture passages in operation are at least partially connected to each other. Part of the mixture passage is formed in a carburetor where a fuel port opens into the mixture passage. The mixture passage opens into the crankcase with a piston-controlled mixture inlet having a width in circumferential direction of the cylinder. Upon upward piston stroke the mixture inlet is connected to the crankcase with a portion of the width before a connection of air passage and transfer passage is established.

    摘要翻译： 手持式电动工具具有二冲程发动机，其具有带有燃烧室的气缸和设置在其中的活塞，其驱动支撑在曲轴箱中的曲轴。 在至少一个活塞位置，曲轴箱和燃烧室通过传送通道连接。 空气通道在至少一个活塞位置供应燃烧空气到输送通道。 提供了用于燃料/空气混合物的混合通道。 运行中的空气和混合物通道至少部分地彼此连接。 混合物通道的一部分形成在燃料口通向混合通道的化油器中。 混合物通道通过活塞控制的混合物入口打开到曲轴箱中，该入口具有圆柱体的圆周方向的宽度。 在向上活塞冲程时，混合物入口在空气通道和输送通道的连接建立之前与宽度的一部分连接。

    Two-stroke engine
    6.
    发明授权
    Two-stroke engine 失效
    二冲程发动机

    公开(公告)号：US08667933B2

    公开(公告)日：2014-03-11

    申请号：US13327054

    申请日：2011-12-15

    申请人： Michael Grether ,  Robert Köhli ,  Stefan Kummermehr

    发明人： Michael Grether ,  Robert Köhli ,  Stefan Kummermehr

    IPC分类号： F02B33/04 ,  F02B25/22 ,  F02B25/14 ,  F02B25/00

    CPC分类号： F02B25/22 ,  F02B25/00 ,  F02B25/14 ,  F02M13/04 ,  F02M29/04 ,  F02M35/10085 ,  F02M35/1019 ,  F02M35/10196 ,  F02M35/10321 ,  F02M35/108

    摘要： A two-stroke engine, comprising: a crankcase; a cylinder connected to said crankcase; a combustion chamber defined by a reciprocally mounted piston within said cylinder; a crankshaft mounted rotatably in said crankcase and drivingly connected with said piston; at least one overflow passage connecting the crankcase and the combustion chamber when the piston is positioned in the lower dead center region; a connecting stub attached to said cylinder which contains an intake passage that opens into the crankcase and supplies fuel and combustion air, said intake passage including therein an air-fuel mixture passage, wherein said connecting stub contains at least one section of the mixture passage; at least one fuel opening for supplying fuel into said mixture passage; and a guiding rib positioned within said connecting stub and oriented longitudinally in the mixture passage and protruding into the mixture passage.

    摘要翻译： 一种二冲程发动机，包括：曲轴箱; 连接到所述曲轴箱的气缸; 由所述气缸内的往复安装的活塞限定的燃烧室; 曲轴，可旋转地安装在所述曲轴箱中并与所述活塞驱动连接; 至少一个溢流通道，当活塞位于下死点区域时，连接曲轴箱和燃烧室; 安装在所述气缸上的连接短柱，该连接短柱包含通向所述曲轴箱并供给燃料和燃烧空气的进气通道，所述进气通道包括空气 - 燃料混合物通道，其中所述连接短管包含所述混合通道的至少一个部分; 至少一个用于向所述混合物通道供应燃料的燃料开口; 以及引导肋，其定位在所述连接短管内并在混合通道中纵向定向并突出到混合通道中。

    Two-stroke engine
    7.
    发明授权
    Two-stroke engine 有权
    二冲程发动机

    公开(公告)号：US09353675B2

    公开(公告)日：2016-05-31

    申请号：US13326974

    申请日：2011-12-15

    申请人： Michael Grether ,  Robert Köhli ,  Stefan Kummermehr

    发明人： Michael Grether ,  Robert Köhli ,  Stefan Kummermehr

    IPC分类号： F02B25/00 ,  F02B33/04

    CPC分类号： F02B33/04

    摘要： A two-stroke engine has a cylinder with a combustion chamber which is bounded by a piston which drives a crankshaft which rotates in a crankcase. The crankcase is connected to the combustion chamber via an overflow passage in the lower dead center region of the piston. The two stroke engine has an intake passage. A carburetor forms a section of the intake passage. The intake passage is partially divided into an air passage, which supplies combustion air into an overflow passage, and a mixture passage which opens into the crankcase. A throttle valve mounted pivotably in the carburetor controls the combustion air quantity supplied to the air and mixture passages. An air-guiding element arranged on the passage wall of the air passage guides the combustion air passing between the throttle valve and passage wall in the idling position of the throttle valve in the direction of the mixture passage.

    摘要翻译： 二冲程发动机具有带有燃烧室的气缸，燃烧室由驱动在曲轴箱中旋转的曲轴的活塞限定。 曲轴箱通过活塞下死点中的溢流通道连接到燃烧室。 两冲程发动机具有进气通道。 化油器形成进气通道的一部分。 进气通道部分地分成空气通道，其将燃烧空气供应到溢流通道中，以及通向通向曲轴箱的混合通道。 可转动地安装在化油器中的节流阀控制供应到空气和混合通道的燃烧空气量。 布置在空气通道的通道壁上的空气引导元件沿着混合通道的方向引导在节流阀和通道壁之间通过节流阀的空转位置的燃烧空气。

    Hand-Held Power Tool
    8.
    发明申请
    Hand-Held Power Tool 有权
    手持式电动工具

    公开(公告)号：US20120060381A1

    公开(公告)日：2012-03-15

    申请号：US13225789

    申请日：2011-09-06

    申请人： Niels Kunert ,  Michael Grether

    发明人： Niels Kunert ,  Michael Grether

    IPC分类号： B27B17/00 ,  F02B33/04

    CPC分类号： F02B25/14 ,  F02B25/22 ,  F02B33/04 ,  F02B63/02 ,  F02B2075/025

    摘要： A hand-held power tool has a two-stroke engine with a cylinder with combustion chamber and a piston disposed therein that drives a crankshaft supported in a crankcase. In at least one piston position, crankcase and combustion chamber are connected by a transfer passage. An air passage supplies in at least one piston position combustion air to the transfer passage. A mixture passage for fuel/air mixture is provided. Air and mixture passages in operation are at least partially connected to each other. Part of the mixture passage is formed in a carburetor where a fuel port opens into the mixture passage. The mixture passage opens into the crankcase with a piston-controlled mixture inlet having a width in circumferential direction of the cylinder. Upon upward piston stroke the mixture inlet is connected to the crankcase with a portion of the width before a connection of air passage and transfer passage is established.

    摘要翻译： 手持式电动工具具有二冲程发动机，其具有带有燃烧室的气缸和设置在其中的活塞，其驱动支撑在曲轴箱中的曲轴。 在至少一个活塞位置，曲轴箱和燃烧室通过传送通道连接。 空气通道在至少一个活塞位置供应燃烧空气到输送通道。 提供了用于燃料/空气混合物的混合通道。 运行中的空气和混合物通道至少部分地彼此连接。 混合物通道的一部分形成在燃料口通向混合通道的化油器中。 混合物通道通过活塞控制的混合物入口打开到曲轴箱中，该入口具有圆柱体的圆周方向的宽度。 在向上活塞冲程时，混合物入口在空气通道和输送通道的连接建立之前与宽度的一部分连接。

    Two-stroke engine
    9.
    发明授权
    Two-stroke engine 有权
    二冲程发动机

    公开(公告)号：US08967099B2

    公开(公告)日：2015-03-03

    申请号：US13327020

    申请日：2011-12-15

    申请人： Michael Grether ,  Niels Kunert ,  Tommy Roitsch ,  Klaus Geyer

    发明人： Michael Grether ,  Niels Kunert ,  Tommy Roitsch ,  Klaus Geyer

    IPC分类号： F02B25/00 ,  F02B25/20 ,  F02M3/14 ,  F02M35/10 ,  F02B25/14 ,  F02M3/08 ,  F02M29/04 ,  F02M33/04 ,  F02B75/02 ,  F02B33/04 ,  E02D7/12 ,  F02B61/04 ,  F02F1/22

    CPC分类号： F02B25/20 ,  E02D7/125 ,  F02B25/14 ,  F02B33/04 ,  F02B61/045 ,  F02B2075/025 ,  F02F1/22 ,  F02M3/08 ,  F02M3/14 ,  F02M29/04 ,  F02M33/046 ,  F02M35/10321 ,  Y02T10/126

    摘要： A two stroke engine comprises a cylinder, in which a combustion chamber bounded by a piston is formed, and an intake passage. A carburetor forms a section of the intake passage, within which a throttle element is mounted pivotably, and at least one main fuel opening and at least one idling fuel opening open into the intake passage, which is divided downstream of the carburetor into an air passage and a mixture passage. The idling fuel opening feeds a secondary passage arranged within the mixture passage. In the idling position, the throttle element may be arranged adjacent to the upstream entry opening in the secondary passage, and the throttle element may have an opening which, in the idling position of the throttle element, is arranged in the region of the entry opening and connects the secondary passage to that region of the intake passage located upstream of the throttle element.

    摘要翻译： 二冲程发动机包括形成有由活塞界定的燃烧室的气缸和进气通道。 化油器形成进气通道的一部分，其中节流元件可枢转地安装在其中，并且至少一个主燃料开口和至少一个空转燃料开口通向进气通道，该进气通道在化油器的下游分配成空气通道 和混合物通道。 空转燃料开口供给布置在混合通道内的次级通道。 在怠速位置，节气门元件可以布置成与次级通道中的上游入口相邻，并且节流元件可以具有在节流元件的空转位置处布置在入口开口的区域中的开口 并且将次级通道连接到位于节流元件上游的进气通道的区域。