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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.

PSI Celebrates 30th Year with 2 Million Systems Sold

Thirty years ago, Pressure Systems International invented what it calls the industry’s first tire inflation system for trailers. Recently the company announced it had surpassed the milestone of more than 2 million systems sold.

ATA's Spear: Emission Reduction Timelines Unrealistic

ATA President Chris Spear addressed the challenges of government timelines for reducing emissions and praised the industry for what it has accomplished in reducing diesel emissions over the last four decades, in a speech during a Pressure Systems International fleet technology event.

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