Andreas Stihl Ag Co. Kg

Christian Renz

Johannes Menzel

Harald Mang

Gernot Liebhard

Rene Wichert

René Wichert

David Kraetzig

David Hampe

Markus Maier

Jochen Luz

Jens Kloeker

Arne Untermann

Jochen Oerding

Ante Hamersmit

Ina Schneider

Jens Klöker

An electric motor in a work apparatus has a power characteristic line which runs between a lower rotational speed of the electric motor and an upper rotational speed of the electric motor. The power characteristic line has a power characteristic with a pronounced maximum (M) and an operating plateau (AP) which lies in a working rotational speed range (AD) of the work apparatus. A method for operating the electric motor provides for configuring the position of the operating plateau (AP) to be variable with respect to the rotational speed of the electric motor to achieve stable operating points over a wide rotational speed range.

Method for operating a work apparatus having an electric motor

The invention relates to a portable work apparatus having a housing and a work tool which is driven by an electric motor via a gear assembly. A flywheel which rotates about a rotational axis is arranged in the drive train between the electric motor and the gear assembly, which flywheel is connected fixedly to an output shaft so as to rotate with it, which output shaft protrudes into a gear assembly space and has a drive pinion. The output, shaft and the flywheel are mounted in the housing by two bearing locations, the rotational axis of the flywheel and a motor shaft of the electric motor lying coaxially with respect to one another, and the motor shaft of the electric motor being connected fixedly to the flywheel so as to rotate with it. The electric motor is fixed in the housing exclusively via a torque support.

Portable, electric work apparatus

Growing community of inventors

Biberach, Germany

Christian Renz