| 摘要 |
This invented muffler includes a high-voltage and high-speed direct-current motor (1.1) supplied from the vehicle battery and fixed externally on the specially manufactured exhaust pipe (3) of the engine; a drive system resistant to high speeds and temperatures, composed of a pulley (1.3) driven through a V-belt (1.4) by another pulley (1.2) fastened on the engine shaft; a shaft (2.3) driven by this system and a bearing system (2.4) resistant to high speeds and temperatures, centering the shaft; a double- stage, high-flow air pump (axial fan) (2) containing hubs (2.1 and 2.2) and vanes (2.3 and 2.4); or alternatively, a double-stage air pump (2.1, 2.3 and 2.2, 2.4) driven directly by a high-voltage direct-current electric motor (1.7) contained in a specially manufactured exhaust pipe (3); or alternatively, a reaction turbine (8.7, 9.7, 9.8) located on a specially manufactured exhaust pipe (8.1, 8.2, 8.3, 8.4) that operates with high- flow compressed air (8.5, 8.6) obtained from the vehicle, a double-stage and high-speed air pump (axial fan) (9.1, 9.2, 9.3, 9.4, 9.5, 9.6) fixed on this turbine, the two rotating together, and an expansion chamber (10.1, 10.2, 10.3) into which the compressed air rotating the turbine expands and therefrom mixes into the exhaust pipe, a specially manufactured exhaust pipe (3) fixing and centering the electric motor externally and internally and the air pump internally; an active noise control system casing (4) positioned so as to cause minimum pressure losses; a venturi composed of two nozzles (5.1 and 5.3) connected mutually at the narrowest ends to a narrow cylinder perforated with inclined holes, which creates vacuum in its throat (5.2) according to Bernoulli Equation for gases; and a muffler and vacuum chamber (6) surrounding the venturi (5) and having mechanical sound absorption and frequency interference features, into which, exhaust gases (7) from the engine open and expand.
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