Fallbrook Technologies

Welcome to Power & Economy with NuVinci^®

A continuously variable accessory drive (CVAD) is a device that helps the accessories on a car or truck engine (alternator, air conditioning compressor, water pump, etc.) run more efficiently by continuously optimizing their speed, regardless of what the engine is doing. These belt-driven accessories have always been connected directly to the engine, so their speeds are tied to engine RPM. They have to be sized to meet worst case load conditions at low engine speeds, such as idle, which results in more parasitic losses than necessary and wasted energy at high engine speeds because of excess capacity.

In cars, trucks and buses, a NuVinci® CVAD can improve both accessory performance and vehicle fuel economy by allowing accessories to be operated at their optimal speeds, regardless of engine speed.

Accessories reduce an average car’s fuel economy significantly. Air conditioning use alone is responsible for more than 9% of the imported oil used in the US each year.

For example, at low engine speeds, the accessories can be sped up, providing increased performance cooling the car better on hot day while stuck in traffic, for example.. At higher engine speeds, a NuVinci-based CVAD improves fuel economy by reducing accessory speed. This allows accessories to consume less power as they run at lower, more efficient operating speeds.

Click here to read the NuVinci Development Briefing: A Continuously Variable Accessory Drive for Alternators and Other Engine-Driven Accessories

The NuVinci CVP provides numerous options for accessory drives. Current application areas include:

	CVAD AC Compressor: provides increased compressor output at low speeds and optimizes compressor performance during cruise and acceleration.
	CVAD Alternator: extracts additional power from the alternator to produce maximum current at engine idle. Fallbrook has demonstrated that CVAD-equipped alternators can produce up to 75% more power at idle. NuVinci® CVAD - Alternator Model: 43CVP-A01 U-Drive Now Available for Beta Fleet Tests
	CVAD Crankshaft: optimizes the performance of belt-driven engine accessories to improve fuel economy.
	CVAD Supercharger: provides increased boost at low RPM by enabling high supercharger speeds at low engine speeds.

Fallbrook Technologies Inc. announces agreement with Chengdu Bus Company. Chinese company to implement Fallbrook’s NuVinci® technology to improve bus fuel economy

Fallbrook Technologies Inc. and Hodyon Sign Joint Development Agreement for AC Compressor

Fallbrook Technologies Inc. and Hydro-Gear Sign Manufacturing License Agreement

SAE 2010
October 5-6, 2010
Rosemont, Illinois

CVT2010
November 17-19, 2010
Helmond, The Netherlands

For sales and service information and customer support, contact:
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  support@fallbrooktech.com
  +1 888-NuVinci (USA Toll Free)
  +1 512-279-6200 (Outside USA)
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  europe@fallbrooktech.com

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