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Cummins

Do Electric Powertrains Need Transmissions?

Multi-speed transmissions are utterly necessary with diesel engines to keep engine operating speed within a very limited bandwidth for performance and efficiency. Electric motor have much broader power and efficiency curves, demanding far fewer gear ratios.

Great American Trucks: Peterbilt Model 352 Cabover

The Peterbilt Model 352 cabover tractor was such an iconic design that in an unusual departure from its numeric-based identification system, the company actually gave it a name. It remains Peterbilt’s longest-produced truck to this day.

Cummins Agrees to Pay Record-Setting Emissions Penalty

While Cummins did not admit to any wrongdoing, it agreed to pay a hefty penalty to settle the government's allegations that the engine maker violated the Clean Air Act by installing emissions defeat devices on hundreds of thousands of diesel engines in Ram trucks.

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