Layout structure of secondary air feeding device for motor cycle
A technology for two-wheeled motor vehicles and secondary air, which is applied in the directions of motor vehicles, exhaust devices, mufflers, etc., can solve the problems of limited degree of freedom, troublesome operation, increase the installation time of the secondary air pipe 8, etc., so as to improve the operation. Efficiency, easy installation effect
Inactive Publication Date: 2007-08-08
HONDA MOTOR CO LTD
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[0008] In addition, since the secondary air pipe 8 passes through a narrow space, the degree of freedom of design is limited, and at the same time, when installing the pipe 8, the handling is troublesome, and the installation man-hours of the secondary air pipe 8 are increased.
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[0034] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the drawings are viewed from the direction of the symbols, front, rear, left, and right from the direction seen by the driver.
[0035] Fig. 1 is a side view of a motorized two-wheeled vehicle related to the present invention, a motorized two-wheeled vehicle 20 extends a main frame 22 backward from a head pipe 21, extends a downpipe 23 obliquely downward from the head pipe 21, and clamps an engine 24 to the main vehicle Mounted between frame 22 and downpipe 23, exhaust pipe 26 extends from engine 24 around crankcase 25 of engine 24, and seat rail 28 extends from rear 27 of main frame 22 and supports the seat. The support pipe 29 of the rail bar 28 installs the fuel tank 31 on the main frame 22, and installs the double-connected seat 32 on the seat rail 28, installs the side cover 33 along the double-connected seat, and uses the side cover 33 The front part o...
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Provided is an arrangement structure of a secondary air supply device wherein the secondary air supply device including a secondary air valve is not influenced from the forward and installation of a secondary air pipe is facilitated. Left and right metal tubes 82, 92 which are a main part of the secondary air pipe are made to run above an exhaust pipe 26. Attaching / detaching operation of the metal tubes 82, 92 to a cylinder head 85 is facilitated as shown in the drawings. Also, although a plurality of the metal tubes 82, 92 are bent and formed, tube layout and piping design of the metal tubes 82, 92 become easy. Also, since the secondary air supply device 50 including a secondary air control valve 60 is arranged behind a front face of a downtube 23, the downtube 23 serves as a protector for the secondary air supply device 50. As a result of that, trouble such as deformation of the secondary air supply device 50 caused by external force from the forward can be prevented.
Description
technical field [0001] The present invention relates to an arrangement improvement technology of a secondary air supply device for a two-wheeled motor vehicle. Background technique [0002] The arrangement improvement technology of the secondary air supply device for a motorcycle is well known (for example, refer to Patent Document 1) [0003] [Patent Document 1] Japanese Unexamined Patent Publication No. 8-218859 (Fig. 1, Fig. 2) [0004] 12 is a reproduced view of FIG. 1 in Patent Document 1, showing a structure in which a secondary air valve 11 is arranged in front of the cylinder 2 and a secondary air pipe 8 passes between the exhaust pipe 6 and the cylinder 2 . [0005] It can be seen from the figure that the gap between the exhaust pipe 6 and the cylinder 2 is narrow. [0006] In addition, it can be seen from the figure that the secondary air valve 11 protrudes a part forward from the downcomer 9 . In addition, the oil cooler 10 is located below the downcomer 9 when...
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IPC IPC(8): F01N3/34B62M7/02F02P15/00
Inventor 荻巣纪之
Owner HONDA MOTOR CO LTD