Based on the absorption-chamber principle. Some engines require very low exhaust back pressures for maximum engine performance. Many turbocharged engines and some naturally aspirated engines fall into this category. For these engines, absorption-chamber reactive silencers are available to provide adequate silencing in a wide frequency range while imposing negligible restriction on the flow of exhaust gas.
Operating locations exist where fire hazards and safety codes require removal of sparks from exhaust gases. LUHE spark arrestor silencers are engineered to perform the dual function of spark arrestment and silencing for all internal combustion engines.
Based on the reflexion and resonator principle.
For the majority of engines and operating conditions this multi-chamber type silencers provide sufficient noise attenuation within acceptable back pressure limits. Most naturally aspirated and supercharged engines need this type of silencer. Many turbocharged engines are best silenced with this design also.
Exhaust silencers for ship's engines
