straddle vehicle

Abstract

A straddle vehicle (1), comprising: 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 with a cylinder (42) having a cylinder axis (X) inclined forward to be substantially horizontal, and the swingable power unit is supported on the body frame in a swingable manner through a link member (24). superior. The exhaust pipe is connected to the swingable power unit. A catalytic device is inserted in the exhaust pipe, and a protective plate (8) is attached below the crankcase (30). The lower end (7b) of the catalytic device is positioned upwardly relative to the lowermost end (8b) of the protective plate. The above-described arrangement secures the ground level even when a large-diameter catalytic device is inserted in the exhaust pipe, and protects the bottom surface of the crankcase. Even without a separate tailpipe protection plate, the vehicle can protect the tailpipe and catalytic device from external damaging factors such as flying stones and steps or shoulders on the 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.

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