초록 ▼

An exhaust system for a vehicle, such as a motorcycle or other straddle-type vehicle, that achieves miniaturization while providing advantageous noise reduction characteristics. The exhaust system is associated with an engine of a vehicle and includes an exhaust pipe connected to the engine and a si

An exhaust system for a vehicle, such as a motorcycle or other straddle-type vehicle, that achieves miniaturization while providing advantageous noise reduction characteristics. The exhaust system is associated with an engine of a vehicle and includes an exhaust pipe connected to the engine and a silencer. A conical member is positioned within the silencer and includes an upstream end and a downstream end. At least a portion of a side wall of the conical member includes a plurality of through-holes. The conical member is oriented such that a radial dimension of the conical member increases in a direction from the upstream end to the downstream end.

대표청구항 ▼

What is claimed is: 1. An exhaust system, comprising: an exhaust pipe that is connectable to an engine of an associated vehicle; a silencer connected to the exhaust pipe, the silencer comprising an outer housing and an inner core extending within the outer housing, the inner core directly connected

What is claimed is: 1. An exhaust system, comprising: an exhaust pipe that is connectable to an engine of an associated vehicle; a silencer connected to the exhaust pipe, the silencer comprising an outer housing and an inner core extending within the outer housing, the inner core directly connected to the exhaust pipe such that exhaust gas entering the outer housing of the silencer is delivered directly into the inner core; a tail pipe connected to the silencer; and at least one conical member positioned within the silencer and including an upstream end and a downstream end, at least a portion of a side wall of the conical member being formed with a plurality of through-holes; wherein the at least one conical member is located at least partially within the inner core and oriented such that a radial dimension of the conical member increases in a direction from the upstream end toward the downstream end, and such that exhaust gas entering the silencer and traveling in a direction substantially aligned with a longitudinal axis of the inner core impinges the at least one conical member at an oblique angle; and a largest radial dimension of the at least one conical member is spaced from an inner surface of the inner core to define a gap between the at least one conical member and the inner core. 2. The exhaust system of claim 1, wherein the at least one conical member is positioned proximate a junction between the exhaust pipe and the silencer. 3. The exhaust system of claim 1, wherein the at least one conical member is positioned towards an upstream end of the silencer. 4. The exhaust system of claim 1, wherein the at least one conical member is mounted to the inner core of the silencer. 5. The exhaust system of claim 1, wherein the at least one conical member comprises a plurality of conical members. 6. The exhaust system of claim 5, wherein the at least one conical member comprises a first conical member secured to the tail pipe and a second conical member secured to the inner core. 7. The exhaust system of claim 6, wherein at least one of the first conical member and the second conical member defines an opening at an upstream end. 8. The exhaust system of claim 6, wherein the second conical member is arranged to overlap at least an upstream end portion of the first conical member. 9. The exhaust system of claim 6, wherein the first conical member is positioned towards an upstream end of the silencer and the second conical member is positioned proximate a junction between the exhaust pipe and the silencer. 10. A straddle-type vehicle, comprising: an engine comprising at least one combustion chamber; an exhaust pipe that is connectable to the at least one combustion chamber; a silencer connected to the exhaust pipe, the silencer comprising an outer housing and an inner core extending within the outer housing, the inner core directly connected to the exhaust pipe such that exhaust gas entering the outer housing of the silencer is delivered directly into the inner core; a tail pipe connected to the silencer; and at least one conical member positioned within the silencer and including an upstream end and a downstream end, at least a portion of a side wall of the conical member being formed with a plurality of through-holes; wherein the at least one conical member is located at least partially within the inner core and oriented such that a radial dimension of the conical member increases in a direction from the upstream end toward the downstream end, and such that exhaust gas entering the silencer and traveling in a direction substantially aligned with a longitudinal axis of the inner core impinges the at least one conical member at an oblique angle; and a largest radial dimension of the at least one conical member is spaced from an inner surface of the inner core to define a gap between the at least one conical member and the inner core. 11. The straddle-type vehicle of claim 10, wherein a downstream end of the silencer is positioned forward of an axis of an axle of a rear wheel provided on the straddle-type vehicle. 12. The straddle-type vehicle of claim 10, wherein said engine operates on a four-stroke principle. 13. The straddle-type vehicle of claim 10, wherein the straddle-type vehicle is an off-road motorcycle. 14. The straddle-type vehicle of claim 10, wherein the at least one conical member is positioned proximate a junction between the exhaust pipe and the silencer. 15. The straddle-type vehicle of claim 10, wherein the at least one conical member is positioned towards an upstream end of the silencer. 16. The straddle-type vehicle of claim 10, wherein the at least one conical member is mounted to the inner core of the silencer. 17. The straddle-type vehicle of claim 10, wherein the at least one conical member comprises a plurality of conical members. 18. The straddle-type vehicle of claim 17, wherein the at least one conical member comprises a first conical member secured to the tail pipe and a second conical member secured to the inner cylinder. 19. The straddle-type vehicle of claim 18, wherein at least one of the first conical member and the second conical member defines an opening at an upstream end. 20. The straddle-type vehicle of claim 18, wherein the second conical member is arranged to overlap at least an upstream end portion of the first conical member. 21. The exhaust system of claim 1, wherein the inner core extends completely through the outer housing. 22. The straddle-type vehicle of claim 10, wherein the inner core extends completely through the outer housing.