Hand-operated equipment`s e.g. engine chain saw, drive arrangement, has pipe section outer surface spaced, in sections along entire outer circumference of pipe section, from exhaust duct inner surface by air gap

摘要

The arrangement has an internal combustion engine with a cylinder wall (8) for guiding an exhaust duct (4) with exhaust duct inner surface (4a) from an internal combustion chamber (3) to an exhaust duct opening (11). A pipe section has a pipe section outer surface, where the pipe section is arranged in a section of the exhaust duct. The pipe section outer surface is spaced, in sections along an entire outer circumference of the pipe section, from the exhaust duct inner surface by an air gap (13).