May 6, 2006 Antonov will demonstrate an innovative two speed supercharger at the Engine Expo in Stuttgart (Germany) next week and at Zandvoort race circuit in the Netherlands the following week using a Mercedes and Ford Mustang fitted with the high performance add-on. The Mustang will then be shipped to North America to feature in the Hot Rod Power Tour. The two speed drive enables a Rotrex centrifugal pump supercharger to be better matched to any engine. By driving the supercharger faster at low engine speeds, higher boost ratio can be obtained to provide additional low speed engine torque. As engine speed rises the unit automatically changes up to enable the supercharger to continue to operate effectively at higher engine speeds. The ability of the mechanism to operate as a passive device without the need for additional external control or hydraulics offers low cost, high efficiency and simplicity of application. The compact Antonov drive system - essentially a tiny automatic gearbox - extends the engine torque curve delivered by a centrifugal pump supercharger. This type of supercharger is in itself more compact, less complex and less expensive than a positive displacement supercharger, but in comparison cannot offer the same torque output at low engine revs. The addition of an Antonov drive system, however, extends the engine torque curve available to exceed even the performance of a positive displacement blower. In addition, the torque curve can be tuned so that a smaller displacement engine matches exactly the performance of a much larger naturally aspirated unit.
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