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Cover structure of internal combustion engine

A technology for internal combustion engines and cover parts, which is applied to the lubrication of mechanical equipment, engine components, and valve accessories. It can solve problems such as lubricating oil retention, and achieve the effect of preventing interference and inhibiting retention

Active Publication Date: 2015-09-09
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, if protrusions such as the central fastening portion and the coupling portion are provided, the lubricating oil flowing along the inner surface of the chain case may stagnate on the upper surface of the protrusions, etc.

Method used

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  • Cover structure of internal combustion engine
  • Cover structure of internal combustion engine
  • Cover structure of internal combustion engine

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Experimental program
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Embodiment Construction

[0085] Embodiments of the present invention will be described in detail with reference to the drawings. In the description, the same reference numerals are assigned to the same elements, and overlapping descriptions are omitted. In this embodiment, a case where the present invention is applied to an engine of a motor vehicle will be described as an example. Also, when specifying directions, based on figure 1 The front, rear, up, down, left, and right sides of the illustrated vehicle are described.

[0086] In addition, in the present embodiment, the vertical direction coincides with the vertical direction, and the cylinder axis direction is a direction inclined at a predetermined angle to the front side with respect to the vertical direction (vertical direction). Also, the axial direction is a direction parallel to the rotation centers of the crankshaft and the camshaft. Also, the orthogonal direction is a direction perpendicular to the cylinder axis direction when viewed f...

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PUM

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Abstract

A cover structure, for an internal combustion engine, that can inhibit lubricating oil from remaining at a protrusion portion is provided. The cover structure for an engine includes a chain case that covers a timing train mechanism, and a timing train chamber is formed between the chain case and the engine main body. The chain case includes bolt insertion holes provided at side marginal portions and directed toward the engine main body, a variable-valve boss portion and a second-oil-path boss portion that protrude from a wall portion toward the engine main body and form a recessed portion where lubricating oil for lubricating the timing train mechanism remains, and a first rib that is protruding from the wall portion toward the engine main body and provided upper than at least the recessed portion.

Description

technical field [0001] The present invention relates to a cover structure for an internal combustion engine. Background technique [0002] Generally, a protrusion protruding toward the engine body is provided on an inner surface (back surface) of a chain case covering a timing chain for transmitting rotation of a crankshaft of the engine to a camshaft. [0003] For example, Patent Document 1 discloses an invention including a connecting portion and a plurality of central fastening portions protruding from the inner surface of the transmission chain case, abutting against the engine main body and fastened by bolts. The fastening part protrudes from the inner surface of the transmission chain case and connects the central fastening parts, and the connecting part abuts against the engine main body. [0004] Patent Document 1: Japanese Patent Laid-Open No. 2002-130051 [0005] However, when protruding parts such as the central fastening part and the connecting part are provide...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02F7/00F01L1/34F01M9/10
CPCF02B77/00F02F7/0073
Inventor 小岩洋二郎
Owner HONDA MOTOR CO LTD