Automotive Design and Production

JUL 2014

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25 Everybody knows that the 2015 Ford F-150 light-duty pickup is an aluminum-intensive vehicle. The aluminum is used, along with considerably more high-strength steel in the truck's frame (from 23% in the current generation to 77% in the 2015), in order to make the vehicle lighter. According to Ford engineers, the vehicle is approximately 700 lb. lighter thanks to the use, in large part, of the materials (they attribute 60 lb. of the weight save to the steel in the frame; presumably the alumi- num box and body panels account for the majority of the save). The rationale for reducing the weight of the pickup is predicated, in part, on the need to improve fuel efciency. Simply stated, the less mass there is to move, the less energy is needed to move it. What's more, there is what is called a "virtuous cycle" that gets set up when designing and engineering something like this. That is, because the vehicle is lighter, there is a fairly straight-forward concomi- tant reduction in the size and weight of other things, ranging from the engine to the brakes. But while Ford is working toward an energy-save with the aluminum and high-strength steel, there are other things that it is doing from an energy-saving and "greener" material utilization. For example, it will be the frst light truck to ofer LED headlamps. Compared to halogen headlamps, the LEDs use 63% less energy. And the lens for the lamp was carefully engineered not only for illumina- tion, but for strength. In terms of the illumination, each lens is created with 16 precision optical surfaces and 80 facets so as to spread the light evenly. As a result, only one LED is required per lamp. As for the strength, Ford lighting expert John Teodecki literally stood on one of the 11-lb. lamp assemblies and said, "We fre stones at this headlamp, expose it to extreme sun, soak it in saltwater, shoot rocks, rock salt and ice— t Outside and in, over and under, the 2015 Ford F-150 is engineered with lightweight and alternative materials. 0714ADP FEATURE Cover Story Ford -- Digital Version.indd 25 6/17/2014 1:08:53 PM

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