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Basic Continuously Variable Transmission explained with Legos

In recent years, the search for better fuel efficiency and smoother shifting has produced automatic transmissions with double-digit gears. Alternatively, the same quest has boosted the popularity and usage of a different type of automatic transmission without any fixed gears, the continuously variable transmission, or CVT. YouTuber Sariel's Lego Workshop recently took the time to build a CVT demonstration model out of Legos to help explain how they work. Sariel begins by showing the model's input and output shafts that are parallel to each other. Each shaft has a cone attached to it, and they are inversely placed so that the large part of one cone is next to the small part of the other cone. The two cones are connected using a rounded rubber band.  By shifting the rubber band up and down the cones, the machine changes the effective ratio between the cones. So, a 1:4 ratio can be smoothly transitioned to 4:1. No clutch is required to operate the mechanism, and it eliminates hitches or pauses between gear changes. CVTs are also advantageous over 9- or 10-speed automatics in that they are far less complex and weigh less.  To demonstrate how the CVT operates in a vehicle, Sariel used a joke about Top Gear. The original Top Gear is represented by a faster-moving car that has the rubber band around the large part of the cone on the input shaft. Top Gear without former hosts Richard Hammond, Jeremy Clarkson, and James May is represented by a slow-moving car with the rubber band around the large part of the cone on the output shaft.  For an even more detailed explanation of how CVTs work — albeit one that doesn't involve toys — you can click here. Technology Toys/Games Nissan Subaru

Nissan seeks tech tie-up without Renault as alliance nears end of road

Nissan is developing growth plans in areas such as software and electric vehicles (EVs) independent of Renault SA as the automakers work to finalize terms of a sharply limited alliance, said seven people with knowledge of the matter. Japan's third-biggest automaker by sales is seeking a partner outside the auto industry to develop software that connects vehicles to cloud-based services, two people involved in discussions said, without elaborating on candidates. That would address a relative weakness for Nissan as it tries to make cars "smarter and more connected," one of the people said. It is also working on an expanded strategy for all-battery and plug-in EVs for North American and Asian markets that will be for Nissan alone, they said. The revelations come as the alliance oversight board met this week to discuss a rebalance that will see Renault cut its stake in Nissan to 15% from 43% — matching the size of Nissan's stake in Renault — and Nissan gain reciprocal voting rights. Under the deal, to be finalized by mid-year, Nissan will also invest in the French automaker's new Ampere EV business. Imbalance had long riled Nissan executives who complained Renault did not pay its fair share of costs for innovation and development. Nissan's emerging strategy reflects a belief within the automaker that the 23-year-old alliance has run its course for many of the biggest challenges it faces, the people said. While Nissan sees continued savings in shared parts procurement with Renault, it has no plan to provide engineering support to Ampere, said two of the people, who all asked not to be identified because talks between the pair are ongoing. It also has no plan to provide its e-Power hybrid technology to a gasoline powertrain-focused joint venture Renault has with China's Zhejiang Geely Holding Group Co Ltd and Saudi Aramco Base Oil Co JSC, two of the people said. GOING SOLO Such go-it-alone thinking is shaping a longer-term plan that could be announced by year-end focusing on improved operational performance, electrification and software allowing self-driving and other "connected car" features, one of the people said. "Even if Renault gets something from Nissan, benefits moving in the other direction are hard," a second person with knowledge of Nissan's stance said.

Nissan-Dongfeng's Leaf-based Venucia e30 EV goes on sale in China

Nissan's proverbial other shoe has dropped on the other side of the world. The Japanese automaker, along with Chinese company Dongfeng, has started selling the Venucia e30 battery-electric vehicle in the world's most populous country. How the sister vehicle to the Nissan Leaf will fare remains to be seen, but it's a pretty big bet. The companies certainly tested the model enough, very quietly running 300 trial vehicles a combined three million miles on China's roads. The result is a vehicle the companies say reduces operating costs by about 85 percent relative to gas-powered vehicles and can go 35 miles on a five-minute quick-charge. In China, the Venucia e30 retails for about $44,000, though that's before government incentives kick in. The car will debut with sales in Beijing, Shanghai, Guangzhou, Shenzhen, Dalian, Wuhan, Tianjin, Zhengzhou and Hangzhou. The rest of the country gets access to the model next year. Nissan and its Chinese partner are probably hoping for the kind of success Nissan's has finally started to have with the Leaf in the US recently. Last month, Nissan moved 3,186 Leaf vehicles Stateside, a monthly record. Year-to-date US sales of the Leaf are up 34 percent from last year to 18,841 units. You can find more info on the e30 in Nissan's press release below. DONGFENG NISSAN LAUNCHES ITS FIRST ALL-ELECTRIC VEHICLE - Venucia `e30' offers trusted, affordable, pure EV experience for Chinese consumers - SHANGHAI, China (September 10, 2014) - Dongfeng Nissan Passenger Vehicle Company (DFL-PV) today launches its first pure-electric vehicle model, "e30," from its local Venucia brand. With a five million kilometer pilot run across China completed prior to launch, e30 is trusted to bring Chinese consumers an enjoyable EV experience at affordable running costs. Its starting price is set at RMB 267,800 Venucia e30 Jun Seki, President of Dongfeng Motor Co., Ltd. (DFL), Nissan's joint venture with Dongfeng Motor Group Co., Ltd., said, "With Nissan Global's advanced technology, sales experience and know-how of electric vehicle, the Venucia e30 has been locally developed through our careful studies about market situations and consumer needs in China. I am looking forward to seeing the Venucia e30 lead China's electric-vehicle market into the future and also to more development of new energy vehicles and the wide adoption of electric vehicles in China." e30 achieves an optimal balance between driving range, affordability and convenient charging.