Toyota's Grand Master of Hybrid, Kentaro Tomo, discusses the new planetary gear set in the Toyota Prius. In the video, Tomo meets with Lou Ann Hammond of Driving the Nation to explain the technology. He says it improves efficiency by 20 percent, which is part of the reason for the increased fuel economy. Other factors include improvements to engine combustion with exhaust gas recirculation. See the video above, and read more at Driving the Nation.
I love getting to meet and talk to the people from TMC Japan who actually designed and engineer things. I always learn things but this video highlights how difficult and fragmented that communication can be. And, in fairness to Tomosan, well, the host isn't exactly helping.