Indicators Power Increase of Gasoline Engine by Optimizing Its Exhaust System
Abstract
This article presents the results of a VAZ-21126 engine exhaust system calculation using the FlowVision software. The influence of wave processes in the exhaust system on cylinder exhaust gas purification is examined. A modified exhaust manifold (4-2-1) was calculated and designed using empirical relationships. Wave processes have a positive effect on the residual gas coefficient in the cylinder. The study resulted in a 6.7% reduction in pressure after the exhaust valve. The results of the calculation of the filling coefficient (ηv) based on the external speed characteristic (from 1000 min-1 to 4000 min-1) are presented; it increased from 2.5 to 4%. Thus, engine power can be increased solely by changing the shape of the exhaust manifold. The economic effect of using this system is also calculated.
About the Authors
Eduard A. Savastenko
MADI
Russian Federation
Russian Federation
Candidate of Sciences (Technical), associate professor, MADI
Aleksander S. Stryapunin
MADI
Russian Federation
Russian Federation
postgraduate
Roman V. Skobelev
MADI
Russian Federation
Russian Federation
student
References
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Review
Рецензент: В.В. Синявский, канд. техн. наук, доц., МАДИ
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