Improved Corporate Average Fuel Efficiency
Corporate Average Fuel Efficiency
Demand for motor vehicles is expected to continue to rise along with mature market recovery and emerging market expansion. Nissan has making an ongoing effort to develop technologies to maximize the energy efficiency of vehicles with internal combustion engines and hold CO2 emissions down. Nissan strives to develop technologies to maximize the overall energy efficiency of internal combustion engines and improve transmission performance. It is also working to boost the efficiency of hybrid systems that gather and reuse kinetic energy captured from braking. Nissanís core technologies in this area are lithium-ion batteries, Intelligent Dual Clutch Control Hybird and Xtronic transmission (Continuously Variable Transmission: CVT) systems. Considering space within the vehicle, usage, price and other factors, the company selects the optimum fuel-efficiency technologies for particular vehicles and launches them in the market.
Our target for fiscal 2016 is a 35% improvement in corporate average fuel efficiency from the fiscal 2005 level (as measured by corporate average fuel efficiency standards in the Japanese, the United States, European and Chinese markets). Our result in fiscal 2013 was a 31.5% improvement from the fiscal 2005 level.
Top-level Efficiency in Various Classes
Number of CVT-equipped units sold
Current internal combustion engine vehicles lose approximately 70% of their fuelís energy as waste heat. Nissan aims to minimize energy loss and increase fuel efficiency by improving combustion efficiency, as well as reducing intake and exhaust resistance and friction. For example, by downsizing a conventional inline 4-cylinder, 1.5-liter engine to a 3-cylinder, 1.2-liter engine with a supercharger, Nissan boosted fuel efficiency while maintaining the performance of the larger engine. Similarly, replacing a V-type 6-cylinder, 3.5-liter engine with an inline 4-cylinder, 2.5-liter engines with a supercharger increased engine efficiency by up to12%.
Nissanís Xtronic transmission (CVT) provides ďsteplessĒ gear shifting, enabling the optimal RPM level for the vehicle at any speed. This allows for a balance of smooth, powerful driving and fuel efficiency when accelerating. Nissan employs Xtronic transmission in a wide range of vehicles, from "kei" minicars to mid-size cars in the 3.5-liter class. The new-generation Xtronic transmission (for use in cars with 2.0- to 3.5-liter engines) has been installed in products worldwide since 2012. This systemís ratio coverage of 7.0 and friction reduction of around 40% improve fuel efficiency by up to 10% (in-house measurement using U.S. Environmental Protection Agency combined mode).
Nissan is making efforts to launch vehicles achieving class-leading fuel efficiency with these technologies. Also, Nissan aims to ship 20 million CVT-equipped vehicles, with their fuel efficiency benefits, by fiscal 2016 from their first launch in 1992,
thereby helping to reduce global CO2 emissions.
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