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Crankcase ventilation system for engine

A crankcase ventilation and engine technology, which is applied in the field of ventilation systems, can solve the problems of unsatisfactory oil-gas separation effect and increase the difficulty of layout, etc., and achieve the effects of compact structure, less connecting pipelines and reliable performance

Inactive Publication Date: 2011-08-10
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the defect of the current forced ventilation system is that the ventilation system is connected by several separate components such as the oil-gas separator and the PCV valve, and is arranged around the engine.

Method used

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  • Crankcase ventilation system for engine
  • Crankcase ventilation system for engine
  • Crankcase ventilation system for engine

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Experimental program
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Embodiment Construction

[0015] Such as Figure 1-5 As shown, it includes a valve chamber cover body 3, which is characterized in that a ventilation system is integrated on the valve chamber cover body 3, and the ventilation system is composed of a labyrinth oil-gas separator 4, an integrated PCV valve 5, and an air windshield 7. The adsorbent 8, the upper support plate 11 and the lower support plate 12 are formed. The valve chamber cover body 3 is injection molded with plastic materials. The valve chamber cover body 3 is provided with an oil discharge port and a ventilation pipe port 6. The sealing ring 2 is installed and placed on the oil port cover 1, and the labyrinth oil-gas separator 4, the integrated PCV valve 5 and the valve chamber cover body 3 are assembled together by friction welding. Install the upper support plate 11 and the lower support plate 12 downwards in turn, the upper support plate 11 and the valve chamber cover body 3 form a closed cavity, the oil return passage 13 is formed bet...

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PUM

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Abstract

The invention discloses a crankcase ventilation system for an engine. A valve cover body (3) is molded through injection; a labyrinth oil-gas separator (4), an integrated PCV (Pollution Control Valve) (5) and the valve cover body (3) are combined together by adopting a frictional welding way; the bottom of the valve cover body (3) is provided with an upper support plate (11) and a lower support plate (12); the upper support plate (11) and the valve cover body (3) form a sealed cavity; the upper support plate (11) and the lower support plate (12) form an oil return duct (13); an air wind shield (7) is arranged in the sealed cavity formed by the upper support plate (11) and the valve cover body (3); and an adsorbate is arranged on the air wind shield (7). The crankcase ventilation system disclosed by the invention is integrated in a valve cover, and thus, the pipeline connection is reduced, the configuration is optimized, the structure is compact, the operation is reliable, and mixed oil and gas in the engine can be effectively separated.

Description

technical field [0001] The invention relates to a ventilation system, in particular to an engine crankcase ventilation system. Background technique [0002] When the engine is working, part of the combustible mixture and exhaust gas leak into the crankcase through the piston ring. Gasoline vapors that leak into the crankcase condense and dilute the oil. At the same time, the high temperature of the exhaust gas and the acidic substances and water vapor in the exhaust gas will corrode the parts and deteriorate the performance of the lubricating oil. In addition, due to the mixed gas and exhaust gas entering the crankcase, the pressure in the crankcase increases and the temperature rises, which makes it easy for the oil to leak from the oil seals, gaskets, etc. to the outside. For this reason, general automobile engines have a crankcase ventilation device, so that the mixed gas and exhaust gas entering the crankcase are extracted in time, so that fresh gas enters the crankcas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01M13/04
Inventor 常绿
Owner HUAIYIN INSTITUTE OF TECHNOLOGY