Fuel economy standards for commercial vehicles are leading to significant changes in fleet equipment technologies. The increased pressure on truck and engine manufacturers is accelerating their efforts to squeeze more miles out of every gallon of fuel.
While every vehicle system is being scrutinized, the primary target is the engine, which is responsible for up to 60 percent of all energy use in a linehaul truck. The key is to make the engine more efficient without giving up horsepower and performance.
One answer is downspeeding, a reduction in RPM, especially at highway speeds, that allows the engine to cruise in its sweet spot, reducing friction and increasing fuel efficiency substantially.
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