Exhaust system of saddle-ride type vehicle

Patent metadata

Field	Value
Publication number	US-9815521-B2
Application number	US-201514860838-A
Country	US
Kind code	B2
Filing date	Sep 22, 2015
Priority date	Sep 25, 2014
Publication date	Nov 14, 2017
Grant date	Nov 14, 2017

Abstract

An exhaust system of a saddle-ride type vehicle includes an exhaust pipe portion, a chamber portion, and a silencer. The exhaust pipe portion is coupled to an engine supported by a frame. The exhaust pipe portion is configured to guide exhaust air. The chamber portion is coupled to the exhaust pipe portion. A cross section of the chamber portion is formed larger than the exhaust pipe portion. The silencer is coupled to the chamber portion. The chamber portion includes: a main body portion disposed below the frame, and a fixing bracket projecting upward from the main body portion. The fixing bracket is secured to the frame. The frame and the fixing bracket have a fixed position. The fixed position is positioned above a lower end of the frame.

First claim

What is claimed is:

1. An exhaust system of a saddle-ride type vehicle, comprising:
an exhaust pipe portion coupled to an engine supported by a frame, the exhaust pipe portion being configured to guide exhaust air;
a chamber portion coupled to the exhaust pipe portion, the chamber portion whose cross section being formed larger than the exhaust pipe portion; and
a silencer coupled to the chamber portion, wherein
the chamber portion comprises:
a main body portion disposed below the frame, and
a fixing bracket projecting upward from the main body portion, the fixing bracket being secured to the frame,

the frame and the fixing bracket have a fixed position, the fixed position being positioned above a lower end of the frame, and
the main body portion has a convex portion on either end, which bulges more upward than a center of the main body in the vehicle-width direction, formed at a top surface on the edge portion in the vehicle-width direction, and the fixing bracket is joined to the top surface of the convex portion.

2. The exhaust system of the saddle-ride type vehicle according to claim 1 , wherein
the convex portion is positioned rearward with respect to a pivot shaft and upward with respect to a lower end of the frame, the pivot shaft supporting a swing arm.

3. The exhaust system of the saddle-ride type vehicle according to claim 1 , wherein
in a vehicle side view, the fixing bracket or the convex portion overlaps a part of a rear wheel suspension device, and
the fixed position is positioned above a mounting position of the frame and the rear wheel suspension device.

4. The exhaust system of the saddle-ride type vehicle according to claim 1 , wherein
the fixing bracket has two fixing brackets joined to the main body portion separately to a right and left, and
the two fixing brackets are tightened together and secured to the frame with a tightening member.

5. The exhaust system of the saddle-ride type vehicle according to claim 1 , wherein
the main body portion has a hollow portion in the top surface at the center in the vehicle-width direction and has a pair of the convex portion at the right side and the left side sandwiching the hollow portion in the vehicle-width direction, and
the fixing bracket has a pair of the fixing bracket joined to a top surface of the pair of the convex portion, respectively.

6. The exhaust system of the saddle-ride type vehicle according to claim 5 , wherein
a rear wheel suspension device is disposed on an upper side of the hollow portion.

7. The exhaust system of the saddle-ride type vehicle according to claim 5 , wherein
the silencer is coupled to one side of the chamber portion in the vehicle-width direction, and
a top surface of the one side of the pair of the convex portion, in which the silencer is jointed, is positioned upward more than a top surface of the other side of the pair of the convex portion, in which the silencer is not jointed.

Assignees

• Suzuki Motor Corp

Inventors

• Inayama Yoshisato

Classifications

• B62M7/04 Primary

  below the frame · CPC title

• F01N13/1822

  for fixing exhaust pipes or devices to vehicle body · CPC title

• F01N2590/04

  for motorcycles · CPC title

• F01N2340/04

  Arrangement of the exhaust system relative to a vehicle or parts thereof · CPC title

• F01N13/08

  Other arrangements or adaptations of exhaust conduits {(pipes, joints or supports therefor in general F16L; collecting or removing exhaust gases of vehicle engines in workshops B08B15/00, on highways E01C1/005)} · CPC title