Device for noise and temperature insulation of an exhaust gas outlet on a portable engine powered tool

摘要

The claimed invention illustrates a solution that will make it possible to lead exhaust gas from a combustion engine (10) through a noise insulating cover (11) without reducing the noise insulating effect of the cover (11). This is possible by leading the exhaust gas through an expansion chamber (15) made of a material that insulates the cover (11) from the high temperature exhaust gas. The expansion chamber (15) is shaped so that the exhaust gas is lead through a curved channel in order to prevent the noise from spreading outside the cover (11).