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Air-exchanging structure of crank case of four-stroke engine

A four-stroke engine and crankcase technology, applied in engine components, crankcase ventilation, machine/engine, etc., can solve the problems of complex structure, difficult to achieve lightweight, etc., to ensure lightweight, good space efficiency, good oil return effect of effect

Active Publication Date: 2006-08-16
WUXI KIPOR POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of structure needs to increase parts, the structure is complex, and it is not easy to achieve light weight

Method used

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  • Air-exchanging structure of crank case of four-stroke engine
  • Air-exchanging structure of crank case of four-stroke engine
  • Air-exchanging structure of crank case of four-stroke engine

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Experimental program
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Effect test

Embodiment Construction

[0013] Below the present invention will be further described in conjunction with the embodiment in the accompanying drawing:

[0014] The present invention mainly consists of engine body 1, crankcase cover 2, cylinder head cover 3, crankshaft 4, valve control chamber 5, crankcase 6, engine casing 7, cylinder liner 8, cylinder head 9, piston 10, connecting rod 11 , connecting rod cover 12, oil needle 13, ball bearings 15, 16, air inlet 17, exhaust port 18, combustion chamber 19, suction system 20, air filter 21, carburetor 22, oil and gas Separation chamber 23, screw 24, partition 25, oil-gas separation chamber 26, one-way valve 27, one-way valve hole 28, valve seat 29, plastic ball 30, cylindrical pin 31, sealing ring 32, cylinder head cover channel 33, return Oil hole 34, lubricating oil 35, labyrinth forming wall 36, channel 37, inclined hole 38, plug 39, hollow positioning pin 40, cylinder head communication passage 41, intake pipe 14 etc. are formed.

[0015] The present ...

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Abstract

In the invention, an oil-gas separating cavity disposed on the top of a cylinder cover is interlinked with a valve control cabin via a through channel. The oil-gas separating cavity is connected with a division plate to form an oil-gas separating chamber. A one-way valve is set on the top of the oil-gas separating chamber. An interlinked channel is located on the top of the one-way valve. A tilt hole is set on the interlinked channel. An oil return hole is disposed between the interlinked channel tilt hole and the oil-gas separating chamber.

Description

technical field [0001] The invention relates to a crankcase ventilation structure of a four-stroke engine. Specifically, when the engine is running, it can effectively prevent lubricating oil from entering the air intake system, and at the same time achieve a good oil mist separation effect, belonging to a power device technology field. Background technique [0002] When the engine is working, part of the mixed gas and exhaust gas in the cylinder leaks into the crankcase through the gap between the piston ring and the cylinder wall. The condensation of the fuel vapor will make the engine oil thinner and shorten the service life of the engine oil. The exhaust gas will damage the parts. The strong corrosion effect will cause the wear of the parts, and the increase of the pressure will cause the engine oil leakage; in order to prolong the service life of the engine oil, reduce the wear of the parts, and prevent the engine oil leakage, the exhaust gas must be discharged by the g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01M13/00
CPCF01M13/0416F01M2013/0461F01M2013/0488
Inventor 肖亨琳
Owner WUXI KIPOR POWER CO LTD
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