Andreas Stihl Ag Co. Kg

Michael Schmid

Andreas Lingen

Jörg Amann

Predag Ostojic

Jürgen Mornhinweg

A handheld work apparatus has an internal combustion engine (&#x2033;) and a starter device (). The internal combustion engine has a piston (&#x2033;) which has at least one piston ring (). In order to avoid a delay when starting the engine, at least one recess is provided in the cylinder bore () which bridges the at least one piston ring () in at least one position of the piston (') and which has a distance (n, o, p) to all function openings of the engine (&#x2033;) configured in the cylinder bore (). To reduce the compression in the combustion chamber (), the piston (&#x2032;) has only one piston ring () or two piston rings () are provided having respective piston ring gaps () defining an angle (&#x3b2;) which is up to approximately 45&#xb0;.

Handheld work apparatus

A portable handheld work apparatus has at least one work tool which is driven by an internal combustion engine (). The engine () has a crankcase () which is formed, at least in part, by a crankcase sump (). The work apparatus has a housing component () of plastic. The crankcase sump () is made of metal and is injection molded into the housing component () of the work apparatus. The engine () has an ignition unit which includes an ignition module (). A simple configuration of the work apparatus results when the ignition module () is fixed directly and electrically conductively to the metal crankcase sump (). For making the work apparatus, at least one attachment element for attaching a work tool carrier is fixed on the crankcase sump () before the crankcase sump () is injection molded therearound by the material of the housing component ().

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Korb, Germany

Michael Schmid