Sound modification apparatus for a turbocharged engine
AssigneeFord Global Technologies, LLC
InventorDerek Ballou
Life of this patent
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Abstract
An apparatus, a system, and a method are disclosed for enhancing a sound of an engine having a turbocharger. The apparatus is used with a vehicle having a turbocharger that includes a recirculation hose that is disconnected from the system. A short section of hose is assembled to a blow-off valve and a sound modification apparatus that includes a horn end and an attachment portion. The attachment portion is connected to an outlet end of the short section of hose. The horn end has a conical end through which a first tone is emitted when vented gases pass inside the horn and a plurality of arcuate opening through which a second tone is emitted.
Claims18
A sound modification apparatus for a turbocharged engine
- comprising:
- a hose attachment portion adapted to be connected to a hose that receives vented gases from a blow-off valve of the turbocharged engine;
- a central horn having a bell-shaped end through which a first tone is emitted when the vented gases pass inside the central horn;
- and
- a plurality of arcuate openings defined by the hose attachment portion through which the vented gases pass between a plurality of spaced fixed ribs that that extend longitudinally and support the central horn within the hose attachment portion and are connected to an outer surface of the central horn, wherein the vented gases are directed toward the outer surface of the central horn, and wherein a second tone that differs from the first tone is emitted when the vented gases pass through the arcuate openings.
A system for enhancing a sound of an engine having a turbocharger comprising:
- a hose receiving vented gases flowing from a charge pipe to a blow-off valve;
- a sound modification apparatus connected to an outlet end of the hose, wherein the sound modification apparatus includes a hose attachment portion adapted to be connected to the hose that receives vented gases, and wherein the sound modification apparatus includes a horn having a conical end through which a first tone is emitted when vented gases pass inside the horn;
- and
- a plurality of arcuate openings defined by the hose attachment portion through which vented gases pass between a plurality of spaced ribs that that connect the attachment portion to an outer surface of the central horn, wherein the vented gases are directed toward the outer surface of the horn, wherein a second tone is emitted when the vented gases flow around the horn.
A method of enhancing a sound of an engine having a turbocharger and a blow-off valve that receives vented gases from the turbocharger, the method comprising:
- disconnecting an end of a recirculation hose from an air intake port and the blow-off valve;
- plugging the air intake port with a cap;
- and
- attaching one end of a hose to a sound modification apparatus, the sound modification apparatus includes a hose attachment portion adapted to be connected to the short hose that receives vented gases, a horn having a conical end through which a first tone is emitted when a first portion of the vented gases pass inside the horn, and a plurality of arcuate openings defined by the hose attachment portion and a plurality of stationary ribs that connect the hose attachment portion to an outer surface of the horn, wherein a second portion of the vented gases pass through the plurality of arcuate openings and are directed toward anthe outer surface of the horn, wherein a second tone is emitted when the vented gases pass outside the horn.
Dependencies are inferred from the claim text.