Browse Publications Technical Papers 2009-01-1541
2009-04-20

Torque Converter-type High Fuel Economy CVT for Small Passenger Vehicles 2009-01-1541

A newly developed 1.3L, 1.5 L class CVT with a torque converter was mounted in the second generation FIT, which is aimed at realizing both higher fuel economy and exhilarating acceleration performance. As the main technologies used in the new CVT, a torque converter was used for a start-off method, an oil pump driven with small radius rotors via a chain and a structure with the bearing was mounted on the drive pulley cover. Particularly, as a type of fuel economy enhancement technology, the distance between two pulleys was increased, thus reducing friction torque. Also, creep control was used to enhance idling fuel economy, and start-off lockup clutch control was used to enhance launch fuel economy. As a result of these technologies, the transmission efficiency was 1.7% higher than that of the previous FIT CVT, and torque amplification effect of the torque converter during launch enabled achievement of higher fuel economy and exhilarating acceleration performance.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.
X