Straddle type vehicle

Abstract

A straddle type vehicle (1) comprises the components of a vehicle body frame (2), a swingable power unit (3), an exhaust pipe (6) and a catalytic device (7). The swingable power unit is provided witha cylinder (42) which has a cylinder axis (X) that frontwards inclines to approximate horizontal, and furthermore the swingable power unit is supported on the vehicle body frame in a singable manner through a connecting rod component (24). The exhaust pipe is connected with the swingable power unit. The catalytic device is inserted into the exhaust pipe and furthermore a protective board (8) is arranged below a crankshaft case (30). The lower end (7b) of the catalytic device is above the lower end (8b) of the protective board. The configuration can ensure a ground height when a large-diametercatalytic device is inserted into the exhaust pipe and protects the bottom surface of a crankshaft case. Even an exhaust pipe protective board is not singly arranged, the vehicle can protect the exhaust pipe and the catalytic device from outer damage factors such as flying stones, and steps or road shoulders on a road.

Description

technical field [0001] The present invention relates to a straddle vehicle including a catalytic device in the exhaust pipe of the engine. Background technique [0002] For example, the following Patent Document 1 describes, in a straddle type vehicle including a swingable power unit, a structure of an oil pan unit having a central guard guide and right and left guard guides formed in an engine crankcase. [0003] In the structure described in Patent Document 1, the exhaust pipe is located below with respect to the corresponding guard guide, and an exhaust pipe guard plate is provided to protect the exhaust pipe. [0004] Since the exhaust pipe is located below the guard guide located below the crankcase in the structure disclosed in Patent Document 1, it is necessary to provide an exhaust pipe guard plate to protect the exhaust pipe, resulting in an increase in the number of parts. [0005] Furthermore, in the case of providing the catalytic device in the exhaust pipe, sin...

AI Technical Summary

Problems solved by technology

[0004] Since in the structure disclosed in Patent Document 1, the exhaust pipe is located below the guard guide located below the crankcase, it is necessary to provide an exhaust pipe guard plate to protect the exhaust pipe, resulting in an increase in the number of parts.

Images