| 摘要 |
The invention relates to a parting-off grinder with an internal combusti on engine (1) with a cylinder (2) having a combustion chamber (3) with an exhaust gas port (10). The combustion chamber (3) is delimited by a piston (5) which drives a crankshaft (7) which is mounted in a crankcase (4) in such a manner that it is able to rotate via a connecting rod (6). On both sides of a cylinder centre plane are positioned transfer passages (12, 15) which connect the crankcase (4) to the combustion chamber (3). A first end of a transfer passage (12, 15) is connected via an inlet window (13, 16) to the combustion chamber, while the second end of the transfer passage is open to the crankcase (4). The transfer passages are connected to an air duct (20) which supplies essentially fuel-free combustion air via a control organ (21). The air duct (20) supplying fuel-free air from an air filter (19 ) is formed by a duct section (29) in a housing wall (23) which is positioned between a carburettor (8) and the cylinder (2) of the internal combustion engine (1).
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