Andreas Stihl Ag Co. Kg

Markus Weinig

Claus Naegele

Christian Eberle

Harald Mang

Georg Heinzelmann

Jonas Lank

Benjamin Frey

Martin Failenschmid

Simon Jug

Mark Reichler

A power saw system has a power saw with housing; guide bar; and saw chain driven about the guide bar by an electric drive motor. A battery is arranged outside of the housing. A power cable is connected with its first end through an electrical connection to the battery and with the second end to the drive motor to supply the drive motor with power. An elastic securing element is connected by a fastening element to the housing. A connecting device connects by a mechanical connection the securing element to an operator of the power saw. The connecting device has an overload protection separating the mechanical connection between securing element and operator when a maximum pulling force is surpassed. Securing element and power cable form a cable assembly. A pull-out force for separating the electrical connection is smaller than the maximum pulling force.

Power saw system and cable assembly for a power saw

An internal combustion engine has an intake channel which opens via a first valve into a crankcase of the engine. The first valve opens at a first frequency (f). The engine has a second valve, which controls the quantity of fuel supplied into the intake channel. The quantity of fuel is controlled by controlling the time interval during which the second valve is open during each engine cycle (x). A control device is provided to control the quantity of fuel supplied. In a first operating state, the second valve is opened at a second frequency (f, f, f) which is coordinated with the first frequency (f). In a second operating state, the second valve is opened independently of the first frequency (f).

Method for operating an internal combustion engine

A work implement has an internal combustion engine that drives a tool of the work implement via a clutch. The clutch has at least one driving element which is operatively connected to the internal combustion engine and at least one output element which is operatively connected to the tool. The internal combustion engine has a starting device with a starting position and an operating position. To avoid unintentional rotation of the output element when starting the internal combustion engine, the work implement has a blocking device with a detent pawl. In an actuated position, the detent pawl projects into the movement path of the output element, limiting the rotation of the output element. In an unactuated position, the detent pawl releases the output element. The starting device has an actuating device which, in the starting position, keeps the detent pawl in the actuated position.

Work implement with an internal combustion engine

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Winnenden, Germany

Markus Weinig