The Influence Mechanism of Intake Structure on Scavenging Performance
In order to explore the influence of various inset structures on scavenging performance,the orthogonal test of inset structure is carried out based on four inset structural parameters,namely,inlet wall thickness,inlet shape,inlet offset and number of inlets.The test results show that:the intake structure of a uniflow scavenging opposed-piston two-stroke diesel engine affects the overall performance of engine by influencing the swirl strength and flow resistance of intake air.The swirl intensity of the intake stream is adjusted by changing the inclination angle,the length and width of inclined plane of the intake structure.The total inlet contact surface affects the flow resistance by changing the intake angle of intake structure.The scavenging performance can be adjusted by changing the inlet flow intensity,and the exhaust gas backflow can be inhibited by changing the inlet flow resistance.It is found that the inlet wall thickness is a significant factor for regulating the scavenging performance of a opposed-piston two-stroke diesel engine.
two-stroke diesel enginescavenging performanceintake structureorthogonal test
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