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Lubricating oil supplying structure of cylinder cover

A technology for lubricating oil and cylinder head, applied in the field of lubricating oil supply structure, can solve the problems of insufficient supply of lubricating oil, inability to sufficiently suppress wear, insufficient lubricating oil, etc., to reduce processing itself, promote friction reduction, Easy to process effect

Active Publication Date: 2015-03-04
MITSUBISHI MOTORS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, as in the technique of Patent Document 1, in the structure in which the oil drip hole for supplying the chain is provided on the end wall of the cylinder head, the lubricating oil cannot be supplied sufficiently.
Especially when the engine is rotating at high speed, the stage where the timing chain is going down still results in insufficient lubricating oil
Therefore, friction is increased due to the sliding contact portion between the timing chain and the chain guide that is in contact with it, so that wear cannot be sufficiently suppressed

Method used

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  • Lubricating oil supplying structure of cylinder cover
  • Lubricating oil supplying structure of cylinder cover
  • Lubricating oil supplying structure of cylinder cover

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Embodiment Construction

[0020] Hereinafter, an embodiment of the present invention will be described. Figure 1A ~ Figure 3 It is a figure for demonstrating the lubricating oil supply structure of the cylinder head concerning one embodiment of this invention, and it demonstrates based on these figures. Such as figure 2 As shown, the engine 2 according to this embodiment is configured to include a cylinder block 4 , a cylinder head 6 coupled to the upper portion of the cylinder block 4 , and an oil pan 8 coupled to the lower portion of the cylinder block 4 . A plurality of cylinders (not shown) are arranged in parallel in the upper part of the cylinder block 4 , and pistons (not shown) reciprocate in each cylinder according to the stroke of the cylinder. A crankshaft (not shown) connected to a piston rod (not shown) of the above-mentioned piston is provided at a lower portion inside the cylinder block 4 , and rotates according to the reciprocating motion of the piston.

[0021] In addition, an unil...

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Abstract

The invention provides a lubricating oil supplying structure of a cylinder cover. A timing chain (16) adjacent to the outside of an end wall part (10) and winding on a chain wheel is installed on a generator. Engine oil in the cylinder cover (6) of the generator is provided as lubricating oil to a lubricating oil supplying position (P) of the timing chain (16). The end wall part (10) is provided with a cut (26) formed by cutting an upper edge. The cut (26) takes a part corresponding to the lubricating oil supplying position (P) as the lowest portion (26a). Thus, the lubricating oil can be supplied to the timing chain abundantly.

Description

technical field [0001] The present invention relates to a lubricating oil supply structure for a cylinder head lubricating a timing chart. Background technique [0002] A cylinder head of an engine (internal combustion engine) is equipped with a valve system that drives an intake valve and an exhaust valve. This valve system is configured to operate synchronously with the crankshaft via a timing chain. The timing chain is hung on a crank sprocket coupled to one end of a crankshaft and a cam sprocket coupled to one end of a camshaft or a shaft interlocked with the camshaft. [0003] In most engines, a camshaft to which a cam sprocket is attached and the like are supported and equipped on upper edges of end wall portions erected at both ends of the crankshaft of the cylinder head. For example, as described in Patent Document 1, cam bearings are provided on upper portions of end wall portions at both axial ends of the cylinder head, and the camshaft is supported by these cam ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01M9/10F02B67/06
Inventor 吉贺大辅村田真一
Owner MITSUBISHI MOTORS CORP