Antonov two speed supercharger


May 5, 2006

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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.

Antonov anticipates demand for the drive system will come from carmakers needing to downsize engines in pursuit of better fuel efficiency and reduced CO2 emissions. The trouble with smaller displacement engines is the loss of low end torque; hence the need to compensate through forced induction to restore the driveability of the vehicle and its engine performance characteristics. Many industry pundits consider the trend to smaller engines unavoidable in pursuit of improved powertrain efficiency and the ultimate market potential therefore could be as high as 100 million engines annually reflecting global vehicle production forecasts over the next 10 to 20 years.

A pure research and development company, Antonov expects to licence the technology to high volume clients either directly or through their Tier 1 suppliers. Antonov can manage the initial manufacture and supply of up to 10,000 units annually through its production supply partner Neue ZWL Zahnradwerk. However the plan is for much lower preliminary sales growing to around 4,000 units over the next three years. Located near Leipzig, Neue ZWL, has a history of 100 years in the manufacture of transmissions and gearbox components.

About Antonov

Antonov is a technology exploitation company originally created to develop the inventions of its founder, Roumen Antonov. It holds a broad intellectual property portfolio in mechanical power transmission. Though focused principally on technology for the automotive industry, due to the potential for high product volumes applications in other sectors are also being explored.

About the Author
Mike Hanlon Mike grew up thinking he would become a mathematician, accidentally started motorcycle racing, got a job writing road tests for a motorcycle magazine while at university, and became a writer. As a travelling photojournalist during his early career, his work was published in a dozen languages across 20+ countries. He went on to edit or manage over 50 print publications, with target audiences ranging from pensioners to plumbers, many different sports, many car and motorcycle magazines, with many more in the fields of communication - narrow subject magazines on topics such as advertising, marketing, visual communications, design, presentation and direct marketing. Then came the internet and Mike managed internet projects for Australia's largest multimedia company, (Australia's largest Telco), (Australia's largest employment site),,, and a dozen other internet start-ups before founding Gizmag in 2002. Now he writes and thinks. All articles by Mike Hanlon
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