Oil passage structure

An oil circuit and oil technology, applied in the directions of lubricating parts, lubricant conduit devices, etc., can solve the problems of increased man-hours, increased man-hours and costs, and easily enlarged dimensions in the manufacture of communication passages, and achieves improved layout freedom, simplicity and ease of use. Compact arrangement, reducing the effect of coiling

Inactive Publication Date: 2008-04-02
HONDA MOTOR CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

This has the following problems, that is, since another oil passage needs to be fixed, the engine becomes complicated, and at the same time, the size tends to increase, and the man-hours for producing the communication passage also increase.
In addition, there is also a problem that two seals need to be used to seal the separated surfaces, and thus the man-hours and costs of assembly are increased.

Method used

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Embodiment Construction

[0036] An embodiment of the present invention will be described below with reference to the drawings. In the following description, directions such as front, rear, left, and right are the same as those indicated in terms of a vehicle, if not particularly specified. In the figure, the arrow FR points to the front of the vehicle, the arrow LH points to the left side of the vehicle, and the arrow UP points to the top of the vehicle.

[0037]The scooter 1 shown in FIG. 1 is a low-pedal vehicle, wherein a head pipe (head pipe) 13 is provided at the front end of the vehicle frame F, and a front fork 11 and a steering handle of the front wheel WF are journalled. 12 is guideably supported by a head pipe 13 . An integral swing type power unit (hereinafter referred to as a swing unit) U is set on the underside of the rear portion of the vehicle frame F, an engine E is set as a power unit of the motorcycle 1 at the front portion of the swing unit U, and At the rear of the unit U, a sha...

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Abstract

To provide oil passage structure where a manhour and a cost for assembly is reduced, securing the sealing performance of each oil passage on a division plane of a crankcase and each oil passage can be easily made to communicate, avoiding the large-sizing of an engine. An oil outflow passage 72 and a main oil passage 76 respectively extended across the division plane of the crankcase substantially in parallel with a crankshaft are provided, a communicating groove 75 that connects the oil outflow passage 72 and the main oil gallery 76 is formed on the division plane of at least one divided body (a left case half 21a) of the crankcase, and an endless sealing member 78 that integrally surrounds the peripheries of the followings is provided to the oil outflow passage 72, the main oil gallery 76 and the communicating groove 75 each half of which is mutually opposite on the division plane.

Description

technical field [0001] The present invention relates to the oil circuit structure of the engine of motorcycles and other vehicles. Background technique [0002] In an oil passage structure in a general form, when each oil passage divided on a boundary plane of the crankcase is connected to each other, the oil passages are hermetically connected through a sleeve and a seal (for example, see Patent Document 1). [0003] [Patent Document 1] JP-A No. 2001-342816 [0004] When there are two separate oil passages on the boundary plane of the crankcase, it is necessary to separately form a communication passage to communicate the two oil passages. This poses a problem that the engine becomes complicated because another oil passage needs to be fixed, and at the same time, the size tends to increase, and the man-hours for producing the communication passage also increase. In addition, there is also a problem in that two seals need to be used to seal the separated surfaces, and thus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01M11/02
Inventor 新妻桂一郎
Owner HONDA MOTOR CO LTD
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