초록

The invention is an adjustable exhaust system and an adjustable insert for an exhaust system. The exhaust system includes a header flange, at least one conduit coupled to the header flange, a collector coupled to the conduit, and an adjustable insert for tuning engine performance.

대표청구항 ▼

1. An exhaust system for an internal combustion engine, the exhaust system comprising:an exhaust header flange for coupling to an engine;a conduit coupled to the header flange;a collector coupled to the conduit wherein the collector has an attachment member; andan adjustable insert disposed within a

1. An exhaust system for an internal combustion engine, the exhaust system comprising:an exhaust header flange for coupling to an engine;a conduit coupled to the header flange;a collector coupled to the conduit wherein the collector has an attachment member; andan adjustable insert disposed within and removeably coupled to the attachment member of the collector, the adjustable insert having a straight section configured to have a non-circular lateral cross-section along an entire length of the straight section. 2. The exhaust system of claim 1 wherein the adjustable insert is permanently coupleable to the collector. 3. An exhaust system for an internal combustion engine, the exhaust system comprising:an exhaust header flange for coupling to an engine;a conduit coupled to the header flange;a collector coupled to the conduit wherein the collector has an attachment member; andan adjustable insert disposed within and removeably coupled to the attachment member of the collector, wherein the conduit, the collector, and the adjustable insert have a non-circular lateral cross-section. 4. The exhaust system of claim 3 wherein the conduit, the collector, and the adjustable insert have a parallelogram-shaped lateral cross-section. 5. The exhaust system of claim 1 wherein the attachment member is a plurality of openings in a wall of the collector. 6. The exhaust system of claim 1 wherein the adjustable insert further comprises:a funnel section sized to fit within the, collector funnel section coupled to the straight section. 7. The exhaust system of claim 6 wherein the straight section has a lateral cross-section smaller than a lateral cross-section of the funnel section. 8. The exhaust system of claim 6 wherein the straight section has a lateral cross-section smaller than a lateral cross-section of the collector. 9. The exhaust system of claim 1 wherein the straight section has a parallelogram-shaped lateral cross-section. 10. The exhaust system of claim 6 wherein the straight section has a coupling member, the coupling member being removably coupleable with the attachment member. 11. The exhaust system of claim 10 wherein the coupling member comprises at least one opening defined by a wall of the straight section. 12. The exhaust system of claim 6 wherein the adjustable insert includes a plurality of holes on one or more surfaces of the straight section. 13. A method for adjusting the performance of an internal combustion engine, the method comprising:providing an exhaust system for the internal combustion engine, the exhaust system having a distal end;inserting an adjustable insert, having a funnel section sized to fit within the distal end of the exhaust system and a straight section disposed distal to the funnel section, longitudinally into the distal end of the exhaust system, the straight section having a non-circular lateral cross-section along an entire length of the straight section; andcoupling the adjustable insert to the exhaust system;wherein the position of the adjustable insert within the distal end of the exhaust system controls the power and torque output from the internal combustion engine. 14. The method of claim 13 wherein the adjustable insert is releasably coupled to the exhaust system. 15. The method of claim 13 wherein the adjustable insert is permanently coupled to the exhaust system. 16. The method of claim 13 further comprising moving the insert toward the distal end of the exhaust system to increase the power output from the internal combustion engine. 17. The method of claim 13 further comprising moving the insert toward a proximal end of the exhaust system to increase the torque output from the internal combustion engine. 18. An exhaust system for an internal combustion engine, the exhaust system comprising:an exhaust header flange for coupling to an engine;a conduit coupled to the header flange;a collector coupled to the conduit wherein the collector has an attachment member; andan adjustable insert dispos ed within and removeably coupled to the attachment member of the collector, the adjustable insert comprising a straight section having a non-circular lateral cross-section along an entire length of the straight section.