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Supercharging by Pressure Wave Generation
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1992 by SAE International in United States
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Pressure waves in the inlet manifold of internal combustion engines have a significant effect on volumetric efficiency. This paper considers the possibility of generating further pressure waves as a method of increasing volumetric efficiency. A theoretical and experimental investigation, the former based on a novel linear model for supercharging, has revealed that actuators driven by the waves present in the waves, “passive” actuators, are able to significantly alter the volumetric efficiency; with ±15% changes demonstrated experimentally. Further improvement with energising or “active” actuators, however, requires more potent actuators than are in general use at present: to provide significant benefit, the power introduced by the actuator must be comparable to that of the natural excitation of the manifold by the induction stroke. A few possible classes of active actuators are discussed.
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CitationRoussopoulos, K., "Supercharging by Pressure Wave Generation," SAE Technical Paper 920684, 1992, https://doi.org/10.4271/920684.
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