maximum design speed for two-stroke engines, in particular for portable equipment such as power chain saws

摘要

With silencers 8 provided with a catalyst, 24, it is necessary to prevent, in the case of portable equipment such as working truncators 1, that the exhaust gases 15 coming out of the silencer and containing the fuel, greatly superheated because of the exothermic reaction in the catalyst does not ignite. For this purpose, the catalyst can constitute, in a silencer at least partially welded, the connection between the chambers separated and the silencer may be placed directly at the output of the motor.