发明名称 Handheld work apparatus
摘要 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°.
申请公布号 US8662047(B2) 申请公布日期 2014.03.04
申请号 US20080149622 申请日期 2008.05.06
申请人 OSTOJIC PREDAG;LINGEN ANDREAS;SCHMID MICHAEL;AMANN JOERG;ANDREAS STIHL AG & CO. KG 发明人 OSTOJIC PREDAG;LINGEN ANDREAS;SCHMID MICHAEL;AMANN JOERG
分类号 F02F1/22;F02F3/24;F02N19/00;F16J9/22 主分类号 F02F1/22
代理机构 代理人
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