2-stage supercharger-Here we go again
05-05-2006, 06:29 PM
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The Lady's Man
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2-stage supercharger-Here we go again
Two-speed supercharger promises best of both worlds
Transmission maker Antonov will demonstrate its two-speed supercharger at the Engine Expo exhibition at Stuttgart in Germany next week. The two-speed design addresses a common problem with superchargers — while they provide better drivability than turbochargers, obtaining good torque at low engine speeds leads to inefficient operation at high engine speeds. The company plans to demonstrate a Mustang fitted with the system.
The solution is to attach a tiny gearbox to the supercharger and use gearing to provide a 1.4:1 step up at lower engine speeds. The graph below shows the effect the system has on torque (see shaded area).
The two-speed supercharger will first appear in the aftermarket for upgrade kits. The initial release of the device into the buoyant US tuner market exposes the first production units to a tough performance engine environment and, in many instances, aggressive track racing conditions.
Commenting on this strategy, Brad Shantry, product development manager of Wheel-to-Wheel Powertrain, Antonov’s North American distributor, said:
“The forced induction market is unquestionably growing. I feel that a centrifugal supercharger with a step-up drive will quickly become the icon product of the performance industry.”
John Moore, chief executive of Antonov, said:
“Our tactic of selling to the world’s largest market for tuner products is strategically important, particularly while we are in discussion with vehicle manufacturers and tier 1 suppliers interested in high volume applications. It shows OEMs that we are confident enough to launch the variable drive into the industry’s toughest marketplace to prove this is fully developed and readily available technology. We have experienced strong interest and have already supplied units to OEM clients for assessment and development trials.”
Transmission maker Antonov will demonstrate its two-speed supercharger at the Engine Expo exhibition at Stuttgart in Germany next week. The two-speed design addresses a common problem with superchargers — while they provide better drivability than turbochargers, obtaining good torque at low engine speeds leads to inefficient operation at high engine speeds. The company plans to demonstrate a Mustang fitted with the system.
The solution is to attach a tiny gearbox to the supercharger and use gearing to provide a 1.4:1 step up at lower engine speeds. The graph below shows the effect the system has on torque (see shaded area).
The two-speed supercharger will first appear in the aftermarket for upgrade kits. The initial release of the device into the buoyant US tuner market exposes the first production units to a tough performance engine environment and, in many instances, aggressive track racing conditions.
Commenting on this strategy, Brad Shantry, product development manager of Wheel-to-Wheel Powertrain, Antonov’s North American distributor, said:
“The forced induction market is unquestionably growing. I feel that a centrifugal supercharger with a step-up drive will quickly become the icon product of the performance industry.”
John Moore, chief executive of Antonov, said:
“Our tactic of selling to the world’s largest market for tuner products is strategically important, particularly while we are in discussion with vehicle manufacturers and tier 1 suppliers interested in high volume applications. It shows OEMs that we are confident enough to launch the variable drive into the industry’s toughest marketplace to prove this is fully developed and readily available technology. We have experienced strong interest and have already supplied units to OEM clients for assessment and development trials.”
05-05-2006, 06:33 PM
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05-05-2006, 07:03 PM
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Try as they all may wish, it will never surpass the raw power potential of the gas driven turbine/compressor setup. A neat idea, but will it outperfom the turbocharger? Doubt it.
Drivability? That's a bull**** statement about SC cars having an advantage there. At least when you drop the hammer in the turbo car you get what you asked for. More gears, more moving parts...I have to agree with Hacker on this one...
Drivability? That's a bull**** statement about SC cars having an advantage there. At least when you drop the hammer in the turbo car you get what you asked for. More gears, more moving parts...I have to agree with Hacker on this one...
05-05-2006, 08:42 PM
#6
I agree.... O **** head for the hills...
The 997 turbo has a variable vane feature... VTG?
I think it is on the exhaust side
This months porshe excellence....
Also this month has an excellent article on the developement of the 928 engine and driveline.
LO
I think it is on the exhaust side
This months porshe excellence....
Also this month has an excellent article on the developement of the 928 engine and driveline.
LO
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05-06-2006, 10:23 PM
#9
Drifting
Once again, I don't doubt your TT 32v 5.0 will run with the big dogs. Just don't put superchargers down until you have some actual experience to speak from. I play with turbos every day but have actual experience with superchargers too.
BTW, that POS 10psi CS'd 89' auto is still running perfectly with all those pesky belts and moving parts in harmony and has actually needed absolutely 0 maintenance for the last 9 months. Not even a belt tension and it's daily driven...
BTW, that POS 10psi CS'd 89' auto is still running perfectly with all those pesky belts and moving parts in harmony and has actually needed absolutely 0 maintenance for the last 9 months. Not even a belt tension and it's daily driven...
