公开(公告)号：US5209196A

公开(公告)日：1993-05-11

申请号：US884206

申请日：1992-05-18

申请人： Hans Nickel ,  Michael Wissmann

发明人： Hans Nickel ,  Michael Wissmann

IPC分类号： B27B17/08 ,  F02B77/08 ,  F02D9/02 ,  F02D11/02 ,  F02M1/02 ,  F02P9/00 ,  F02P11/04

CPC分类号： F02P11/04 ,  F02D11/02 ,  F02M1/02 ,  F02D2009/0254 ,  F02D2009/0294

摘要： The invention relates to an operating-mode position selector arrangement for an internal combustion engine in a portable handheld tool such as a motor-driven chain saw. The engine includes an electrical ignition system and is supplied with a fuel mixture by a carburetor. In a start position of the operating-mode position selector, the position selector holds the choke flap and the throttle flap of the carburetor in pregiven start positions. In an operating position of the operating-mode position selector, the throttle flap is released for actuation via a throttle lever and the choke flap is fully opened. In a stop position of the operating-mode position selector, an electric contact is closed between a terminal of the electric ignition system and ground. The different positions of the operating-mode position selector are detected electrically. This is achieved in that for the operating position of the operating-mode position selector, the terminal of the electric ignition system is connected to ground via a further electric contact and a resistor. In this way, the operating position of the operating-mode position selector can be distinguished from the stop position and the start position because of the different voltages which adjust in each position.

摘要翻译： 本发明涉及一种用于诸如电动链锯的便携式手持工具中的内燃机的操作模式位置选择器装置。 发动机包括电气点火系统，并由化油器供应燃料混合物。 在操作模式位置选择器的起始位置，位置选择器保持化油器的扼流圈和节气门瓣处于预先启动的位置。 在操作模式位置选择器的操作位置，节流阀被释放以通过节流杆进行致动，扼流圈完全打开。 在操作模式位置选择器的停止位置，电触点在电点火系统的端子和地之间闭合。 操作模式位置选择器的不同位置被电检测。 实现这一点，对于操作模式位置选择器的操作位置，电点火系统的端子经由另外的电触点和电阻器连接到地。 以这种方式，由于在每个位置调节的不同电压，操作模式位置选择器的操作位置可以与停止位置和起始位置区分开。

公开(公告)号：US4610229A

公开(公告)日：1986-09-09

申请号：US762103

申请日：1985-08-02

申请人： Michael Wissmann ,  Hans Nickel ,  Reinhold Fink ,  Michael Leuchte

发明人： Michael Wissmann ,  Hans Nickel ,  Reinhold Fink ,  Michael Leuchte

IPC分类号： F02F7/00 ,  B27B17/00 ,  F02B63/02 ,  F02B75/02 ,  F02F1/00

CPC分类号： B27B17/00 ,  F02B63/02 ,  F02F1/002 ,  F02B2075/025

摘要： A portable tool such as a motor-driven chain saw is disclosed which includes a cylinder, a piston, a connecting rod and a crankshaft. The crankshaft is rotatably journalled in crankshaft bearings and a crankcase made of plastic is provided. The bearing shells of the crankshaft bearings are releasably connected only to the cylinder and independently of the plastic crankcase. The plastic crankcase is likewise attached to the cylinder in such a manner that a housing arrangement is provided which is free of transmitted forces and is fully independent of the crankshaft bearings.

摘要翻译： 公开了一种诸如电动链锯的便携式工具，其包括气缸，活塞，连杆和曲轴。 曲轴可旋转地支承在曲轴轴承中，并提供由塑料制成的曲轴箱。 曲轴轴承的轴承壳体可释放地仅连接到气缸并且独立于塑料曲轴箱。 塑料曲轴箱同样地附接到缸体上，使得提供了一个没有传递力并且完全独立于曲轴轴承的壳体装置。

公开(公告)号：US4597371A

公开(公告)日：1986-07-01

申请号：US704082

申请日：1985-02-21

申请人： Michael Wissmann ,  Hans Nickel

发明人： Michael Wissmann ,  Hans Nickel

IPC分类号： F02M59/02 ,  F02B63/02 ,  F02B75/02 ,  F02M39/00 ,  F02M59/10 ,  F02M59/14 ,  F02M59/30

CPC分类号： F02B63/02 ,  F02M39/005 ,  F02M59/102 ,  F02M59/14 ,  F02M59/30 ,  F02B2075/025

摘要： The invention is directed to a fuel injection apparatus for two-stroke engines and is especially for small engines of high-speed tools such as motor-driven chain saws, for example. It provides for the valve-controlled input of fuel into a pressure chamber of a housing and includes a spring-loaded pump piston journalled for reciprocatory movement in a bore to supply the fuel. The pump piston is sealed by an annular seal. For fuel induction, the pump piston has a passageway opening into the pressure chamber and a valve seat. The valve seat of the pump piston cooperates with a substantially free-flying sealing body for opening and closing the valve.

摘要翻译： 本发明涉及一种用于二冲程发动机的燃料喷射装置，特别适用于例如电动链锯等高速工具的小型发动机。 它提供了阀控制的输入到壳体的压力室中的燃料，并且包括一个弹簧加载的泵活塞，用于在孔中往复运动以供应燃料。 泵活塞由环形密封件密封。 对于燃料感应，泵活塞具有通向压力室的通道和阀座。 泵活塞的阀座与用于打开和关闭阀的基本上自由飞行的密封体配合。