Improving the Performance of a Crankcase-Scavenged Two-Stroke Engine with a Fluid Diode
1982; SAGE Publishing; Volume: 196; Issue: 1 Linguagem: Inglês
10.1243/pime_proc_1982_196_004_02
ISSN2058-1203
Autores Tópico(s)Vehicle emissions and performance
ResumoA fluid diode was installed at the inlet port of a crankcase-scavenged two-stroke engine. Experiments on the fired engine showed that the engine torque was significantly improved at low engine speeds. A theoretical model to simulate the gas exchange process, including the flow inside the diode, was developed. The model equations were solved numerically. Theoretical analysis showed that with the diode, backflow was prevented, the delivery ratio was increased and the scavenging mechanism and efficiency were improved. It was concluded that a further improvement in engine performance may be achieved by installing an additional fluid diode at the scavenge port.
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