Devices for regulating pressure and flow pulses

Details Devices for regulating pressure and flow pulses Devices for regulating pressure and flow pulses

2004-07-14

2010-02-16

Enad, Elvin G (Department: 2832)

Acoustics

Sound-modifying means

Muffler, fluid conducting type

C181S278000, C181S279000

Reexamination Certificate

active

07661509

ABSTRACT:
Devices are provided for regulating the pressure pulses and flow pulses that are emitted in the exhausts of apparatus and equipment such as internal combustion engines, compressors and poppet valves. The pressure pulses are reflected from a reflecting member to their source as expansion waves that create a reduced pressure zone that allows subsequently emitted flow pulses to be more easily emitted, thereby enhancing the operational efficiency of the apparatus and equipment. Flow pulses that contain exhaust products such as the products of combustion from an internal combustion engine are regulated so that the exhaust flow they generate is not unduly restricted within the device and an undesirable back pressure that resists the emission of flow pulses from their source created. In regulating the pressure and flow pulses, the devices attenuate the noise generated by the pressure and flow pulses.

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