Optimizing Crankcase Ventilation System of Gasoline Engine

Abstract:

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Based on the design goals of the gasoline engine crankcase ventilation system, the features and the layout were described on the gasoline engine crankcase ventilation system, the working model was established on the gasoline engine crankcase ventilation system; using the fluid properties and the mathematical calculation method, the optimizing strategy was proposed on the piston gas leakage, the influencing factors were analyzed on the gasoline engine crankcase vacuum, the design strategy of the flow characteristics was developed on the PCV valve. Using analog control test platform of the gasoline engine, the tests were made on the piston gas leakage, the crankcase vacuum and PCV valve flow characteristics of the gasoline engine crankcase ventilation system. The test result showed that the optimized maximum piston leakage flow was 14L/min; the increasing rates of the optimized intake pipe and crankcase vacuum average were according 5.6% and 8.0%. This could indicate that the working model on the gasoline engine crankcase ventilation system was correct; the proposed strategies on the piston gas leakage, the crankcase vacuum and PCV valve flow characteristics were feasible in the gasoline engine crankcase ventilation system.

Info:

Periodical:

Edited by:

Qi Luo

Pages:

171-176

DOI:

10.4028/www.scientific.net/AMM.58-60.171

Citation:

M. J. Hu "Optimizing Crankcase Ventilation System of Gasoline Engine", Applied Mechanics and Materials, Vols. 58-60, pp. 171-176, 2011

Online since:

June 2011

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Price:

$35.00

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