Handheld work apparatus

A handheld work apparatus has an internal combustion engine (9, 9', 9'') and a starter device (8). The internal combustion engine has a piston (10, 10'') which has at least one piston ring (37, 38). In order to avoid a delay when starting the engine, at least one recess is p...

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Bibliographische Detailangaben
Hauptverfasser:	AMANN JOERG, LINGEN ANDREAS, SCHMID MICHAEL, OSTOJIC PREDAG
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES BLASTING COMBUSTION ENGINES CYLINDERS CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING PISTONS SEALINGS STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDEDFOR STARTING OF COMBUSTION ENGINES THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A handheld work apparatus has an internal combustion engine (9, 9', 9'') and a starter device (8). The internal combustion engine has a piston (10, 10'') which has at least one piston ring (37, 38). In order to avoid a delay when starting the engine, at least one recess is provided in the cylinder bore (26) which bridges the at least one piston ring (37, 38) in at least one position of the piston (10, 10') and which has a distance (n, o, p) to all function openings of the engine (9, 9', 9'') configured in the cylinder bore (26). To reduce the compression in the combustion chamber (25), the piston (10') has only one piston ring (37) or two piston rings (37, 38) are provided having respective piston ring gaps (39, 40) defining an angle (beta) which is up to approximately 45°.