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Muffler and saddle type vehicle

A technology for ride-on vehicles and mufflers, which can be used in the fields of mufflers, machines/engines, exhaust treatment, etc., and can solve problems such as not being able to fully reduce the influence of the main catalyst

Active Publication Date: 2014-06-04
YAMAHA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the muffler structure of JP-A-2007-23865, the main catalyst is directly supported by the first separator and the second separator, and therefore, the impact of heat generated by the main catalyst on the first separator and the second separator cannot be sufficiently reduced. The impact of the board

Method used

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  • Muffler and saddle type vehicle
  • Muffler and saddle type vehicle
  • Muffler and saddle type vehicle

Examples

Experimental program
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Embodiment Construction

[0050] Hereinafter, the saddle-ride vehicle 10 including the muffler 44 according to one embodiment of the present invention will be described with reference to the drawings.

[0051] figure 1 is a side view showing the straddle-type vehicle 10, figure 2 It is a side view showing the structure of the main part of the saddle type vehicle 10 .

[0052] refer to figure 1 and figure 2 , the saddle type vehicle 10 as a motorcycle includes: a frame 12 , an engine 14 , an air cleaner 16 , an intake unit 18 and an exhaust unit 20 . The frame 12 includes a head pipe 22 , a main frame portion 24 and a seat frame portion 26 .

[0053] refer to figure 1 , the steering shaft 28 is rotatably inserted into the head pipe 22 . A handlebar 30 is attached to the upper end of the steering shaft 28 , and a front fork 32 is attached to the lower end of the steering shaft 28 . The front wheel 34 is rotatably supported by the lower end of the front fork 32 .

[0054] refer to figure 1 and ...

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Abstract

There is provided a muffler which is capable of sufficiently reducing influence from heat generated in a catalyst. There is also provided a saddle type vehicle including the muffler. A saddle type vehicle 10 includes an engine 14 and a muffler 44. The muffler 44 includes an exhaust pipe 46, a silencer 48 and a catalyst 52. The silencer 48 includes a main body portion 68, a first separator 70 and a second separator 72. Inside the main body portion, a first expansion chamber X1 is on a rearward side of the second separator, a second expansion chamber X2 is on a forward side of the first separator, and a third expansion chamber X3 is between the first separator and the second separator. The catalyst is held by the exhaust pipe inside the second expansion chamber. The exhaust pipe passes through a through-hole 70a without making contact with the first separator, and is supported by the second separator. Exhaust gas from the engine flows through the exhaust pipe, the first expansion chamber, the second expansion chamber and the third expansion chamber in this order, and then is released from the main body portion.

Description

technical field [0001] The present invention relates to mufflers and ride-on vehicles, and more particularly to a muffler with a catalyst and a ride-on vehicle including the muffler. Background technique [0002] Conventionally, a muffler having a catalyst for purifying exhaust gas from an engine is known. [0003] For example, in the muffler structure described in Japanese Patent Application Laid-Open No. 2007-23866, the interior of the muffler main body is partitioned into a first expansion chamber, a second expansion chamber, and a third expansion chamber by a first partition and a second partition. The second partition is supported by the muffler main body so as to be movable along the axial direction of the muffler main body. The first expansion chamber is disposed sandwiched by the second expansion chamber and the third expansion chamber. [0004] The engine and the first expansion chamber communicate through an exhaust pipe. The first expansion chamber and the seco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N1/08F01N3/28
CPCF01N2590/04F01N2260/10F01N1/083F01N1/02F01N1/084F01N1/089F01N3/08F01N2230/04
Inventor 藤中崇
Owner YAMAHA MOTOR CO LTD
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