GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K 13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M 35/00; protecting against, or damping, noise in general G10K 11/16)
| Subclass | Title |
|---|---|
| 1/00 | Silencing apparatus characterised by method of silencing |
| 1/02 | Silencing apparatus characterised by method of silencing by using resonance |
| 1/04 | Silencing apparatus characterised by method of silencing by using resonance having sound-absorbing materials in resonance chambers |
| 1/06 | Silencing apparatus characterised by method of silencing by using interference effect |
| 1/08 | Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling |
