Fuel pipeline structure of vehicle

Abstract

The purpose of the invention is to compact a vehicle by reducing vibration amount of a fuel pipe, to reduce the rigidity of a pipe mounting part by reducing an operation force to the fuel pipe mounting part, and to miniaturize and lighten the vehicle. In the vehicle, a power unit having an internal combustion engine body is swing-ably mounted on a vehicle body frame with a cylinder head directed to the front side of the vehicle body, a fuel pump is connected to a fuel tank mounted on the vehicle body frame, a fuel injection valve is disposed in an air intake passage of the internal combustion engine body, and the fuel pump is connected to the fuel injection valve through the fuel pipe. A second hose 84 of the fuel pipe is provided with at least a head cover side extension section 125 extended in the swing direction around the internal combustion engine body including a head cover 51. Part of the head cover side extension section 125 is supported by a first supporting member 97 and a second supporting member 98 which are disposed in the internal combustion engine body 56.

Description

technical field [0001] The invention relates to a vehicle fuel pipeline structure. Background technique [0002] As a conventional fuel line structure for a vehicle, a fuel line extending from a fuel tank provided under a running board to an engine disposed behind the fuel tank is known (for example, refer to Patent Document 1). [0003] Patent Document 1: Japanese Patent Application Laid-Open No. 2003-120450. [0004] FIG. 2 of Patent Document 1 will now be explained with reference to FIG. 9 below. Also, the symbols are relabeled. [0005] 9 is a plan view showing a conventional vehicle fuel pipeline structure. An engine 202 and a fuel tank 203 arranged in front of the engine 202 are installed on a body frame 201. A fuel supply assembly 204 is integrally installed on the fuel tank 203. The engine 202 A fuel injection valve (not shown) is installed on the cylinder part 206 of the fuel supply assembly 204 through a fuel connector 207, and the fuel output pipe 208 provided ...

AI Technical Summary

Problems solved by technology

In addition, around the fuel pipe 212, especially in the vertical direction, it is necessary to provide a space for the fuel pipe 212 to vibrate. Such a space makes the vehicle larger.

Especially in small vehicles, it is difficult to guarantee this kind of space

[0007] In addition, if the fuel pipe 212 is too long, its weight will increase, and when the fuel pipe 212 vibrates, a large force will act on the mounting part of the fuel pipe 212. In order to support this force, the rigidity of the above-mentioned mounting part must be increased. , resulting in an increase in size and weight

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