Patent ID: 8046989

Claim:
An exhaust system for an engine, the exhaust system comprising: (a) an exhaust pipe having an inlet end in fluid communication with the engine for receiving exhaust gases produced by the engine and a discharge end for discharging exhaust gases received from the engine; (b) an air amplifier located external to the exhaust pipe, the air amplifier comprising: (i) a body having a passageway extending therethrough, a first end of the passageway defining an air amplifier inlet, a second end of the passageway defining an air amplifier outlet, the air amplifier outlet being located external to the section of pipe; (ii) a compressed air inlet extending at least part way through the body to receive a flow of compressed air and to direct the flow of the compressed air to an annular chamber formed in the body and surrounding the passageway, the annular chamber being in fluid communication with the passageway, wherein the flow of compressed air is supplied to the passageway from the annular chamber, the flow of compressed air entraining ambient air into the air amplifier inlet so that discharge air comprising the flow of compressed air and the entrained ambient air is discharged from the air amplifier outlet; and (c) a conduit extending through a wall of the exhaust pipe, a first end of the conduit being coupled to the air amplifier outlet to receive the discharge from the air amplifier, a second end of the conduit being located in an interior portion of the exhaust pipe.