Vane Pump for New Generation CVT

JATCO has launched its new belt-type continuously variable transmission (CVT) for 2 - 2.5L class cars in November 2004. JATCO has been planning to deploy this continuously variable transmission, as the new CVT2 model replacing the existing Hyper-CVT, for 2 - 2.5L front-wheel-drive cars around the world, starting in Japan. This paper describes the engineering contents of the oil pump, which has been developed to improve the principal concepts of CVT2: fuel economy improvement, shift performance improvement, and size and weight reduction.