Transport Topics
The Lost Art of ‘Gear Jamming’
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When Cummins Inc. invited industry journalists to the introduction of its X15, the new generation of its 15-liter truck engine, the event showcased not only the latest in heavy-duty truck engines, but also the evolution of transmission technology in trucking.
Trailer Composites in Focus
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In the endless quest to make trailers lighter, sturdier and more thermally efficient, some trailer manufacturers are expanding their use of composite materials, which could offer the potential for a higher strength-to-weight ratio.
Discs or Drums?
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Not all fleets are convinced of the benefits of air disc brakes. But suppliers maintain there is a growing acceptance of them for heavy-duty trucks, driven by an increase in the deployment of active safety technology, such as collision mitigation and avoidance systems.
Figuring Out Fan Drives
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Many in the industry say variable-speed drives, which run only as fast as necessary, are increasingly popular. Variable drives can save on horsepower and therefore save on fuel. However, the more traditional on-off drive also is a popular choice because it’s simplest and cheapest.
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