Finally, a Continuously Variable Transmission that will Makes Sense

Monday, December 19th, 2016 - autos, Featured, mobile, technology, transmissions

Finally, a Continuously Variable Transmission that will Makes Sense

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No, we’re not talking about a continuously variable transmission (CVT) that will transmits power to the drive wheels, nevertheless rather one working a compressor to improve engine performance. Indeed, the British transmission specialist Torotrak has cleverly inserted a CVT in series using a conventional planetary gearset to drive a centrifugal compressor at sufficient speed to boost the intake pressure in both gasoline along with diesel engines.

Weighing only 13.2 pounds inside the illustrated experimental configuration, Torotrak’s V-Charge compressor is usually spun by a belt connected to the engine’s accessory drive system. The toroidal CVT, consisting of specially shaped driving along with driven discs spinning without direct contact, is usually located just behind the input drive pulley. An electromechanical servo can switch the CVT drive through its full 10-to-1 ratio spread in only 0.4 second. Next in line inside the V-Charge housing is usually a fixed planetary gearset, which multiplies shaft speed by a factor of nine. At the end of the shaft, a centrifugal compressor wheel is usually surrounded by a housing that will admits filtered air at atmospheric pressure along with delivers This kind of at boosted pressure to the engine’s intake manifold.

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Quieter than a Roots-type supercharger along with cooler than any turbocharger, V-Charge spins between 10,000 along with 100,000 rpm. The servo controller needs only 10 watts of electrical power to operate, so, unlike electrically powered superchargers, a 48-volt electrical system is usually not required.

Backed by the British government along with in collaboration with both the University of Bath along with the Ford Motor Company, Torotrak spent more than a year developing This kind of booster. Instead of manufacturing This kind of in-house, Torotrak would certainly prefer to license its V-Charge technology either to a carmaker or some auto industry supplier.

Finally, a Continuously Variable Transmission that will Makes Sense

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