Gear Production

DEC 2015

Gear Production

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December 2015—17 Zahnradfabrik Friedrichshafen GmbH (ZF), visit electric motor integrated right into the housing. It has a peak output of 90 kW. There is 45 kW of constant power. The motor is a permanent- feld synchronous machine; it is cooled by atomized oil. Depending on the battery system that is part of the overall architecture, the eight-speed plug-in transmission is capable of providing a vehicle with as much as 50 km (31 miles) of pure electric range. The top speed that can be achieved with it is 120 km/h. There is an inevitability that there will be an increasing amount of electrifcation of the powertrain. That said, in June 2015, the National Research Council published Cost, Effectiveness and Deployment of Fuel Economy Technologies for Light-Duty Vehicles. The authors assessed the various impacts of automotive systems and subsystems as they relate to meeting the 2025 standards for Corporate Average Fuel Economy (CAFE) and greenhouse gas emissions proposed by the U.S. Dept. of Transportation's National Highway Traffc Safety Administration and the U.S. Environmental Protection Agency. In effect, the CAFE for vehicles will be 54.5 mpg, or about double what the requirement was in 2012. Planetary Popularity On the subject of transmissions, the authors write, in part, "The most popular transmission design is the planetary automatic transmission (AT), which is expected to remain the dominant architecture in the U.S. in the 2025 timeframe; however, the market will transition from today's typical six- speed AT to eight- to 10-speed AT designs." Which is to say that, as the transition occurs, and as we proceed forward in time, they will still be making plenty of gears at ZF. In PartnershIP WIth: Search Machines Smarter. Machining Center Drill/Tap Boring Mill Milling Machine Machine Type: The Machine Tool Search Engine PHOTO: Hwacheon

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