Actuator for an Electronically Controlled CVT
- Summary
- The CVT market is dominated by transmissions where the shift profile is adjusted by mechanical means such as flyweights, springs, and hydraulics. Researchers at Purdue University have developed a novel system that fully integrates the adjustment actuator within the CVT. This technology allows the shift profile to be adjusted electronically using software changes, which has several advantages over current electronic continuously variable transmission (ECVT) technology, including reductions in the cost of the CVT motor assembly, in the number of moving parts, in the proliferation of overall hardware, and in the time to market of the product.
- Technology Benefits
- Reduced load on the electrical system when changing gear ratiosReduction in size compared to mechanically actuated CVTs Increased reliability through a reduction in the number of moving parts Reduced time to market when engineering specific applications
- Technology Application
- MotorsFuel IndustryManufacturing
- Detailed Technology Description
- John StarkeyPurdue Mechanical Engineering
- Countries
- United States
- Application No.
- 7,980,973
- *Abstract
-
- *Background
- Continuously variable transmissions (CVTs) have been shown to improve fuel economy between 5 and 10 percent when compared to conventional transmissions with planetary gears. CVTs have become more popular in recent years due to developments in hybrid vehicles and rising fossil fuel prices.
- *IP Issue Date
- Jul 19, 2011
- *IP Type
- Utility
- *Stage of Development
- Prototype Testing
- *Web Links
- Purdue Office of Technology CommercializationPurdueInnovation and EntrepreneurshipJohn StarkeyPurdue Mechanical Engineering
- Country/Region
- USA
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