Diesel trucks with latest emission controls displacing dirtier, older ones on U.S. roads

The phrase “clean diesel” is largely associated with Volkswagen’s diesel emission deceit, but the latest diesel technology can honestly be described with such a phrase.

Semi trucks using the latest-generation clean diesel technology have reached a new milestone—they now make up 30 percent of the United States’ fleet of trucks.

The benefits are substantial as older, dirtier semi trucks are retired for the latest technology which started to arrive around 2011.

DON’T MISS: Diesel deception: more pain ahead for VW brands, Bosch?

Research shows almost three million heavy-duty commercial vehicles on the road today are powered by clean diesel engines.

In turn, they produce incredibly fewer emissions and save billions of gallons of fuel. Specifically, it’s estimated the technology has saved 4.2 billion gallons of diesel fuel and reduced emissions by 43 million tons of carbon dioxide.

The 30 percent average shows an increase from last year’s 25.7 percent average of clean diesel technology deployment, and the benefits will only grow as states like California continue to adopt the technology.

Toyota 'Project Portal' proof-of-concept hydrogen fuel-cell powered semi tractor, for Port of LA

Toyota ‘Project Portal’ proof-of-concept hydrogen fuel-cell powered semi tractor, for Port of LA

Enlarge Photo

In fact, California ranks 46th out of 50 states in the technology’s adoption rate—the Midwest leads the charge with Indiana at a 51 percent adoption rate.

An additional 200,000 tons of NOx could be eliminated from California’s air if it reached Indiana-levels of adoption, according to research.

Utah, Oklahoma, Texas, Montana, Pennslyvania, Nebraska, Maryland, Wyoming, and Wisconsin have each eclipsed adoption rates over 30 percent as well.

READ THIS: Missing piece in global vehicle emission puzzle: heavy trucks

In order for the technology to claim “clean diesel” status, it’s assumed lab tests have confirmed the NOX and CO2 levels remain in the lower limit.

Volkswagen Group diesels claimed similar achievements, but as it is well documented, it was far from the truth.

Toyota 'Project Portal' proof-of-concept hydrogen fuel-cell powered semi tractor, for Port of LA

Toyota ‘Project Portal’ proof-of-concept hydrogen fuel-cell powered semi tractor, for Port of LA

Enlarge Photo

The technology used in semi trucks relies on an efficient engine design with an optimized combustion system and advanced fuel-injection, turbocharging, and management controls.

Additionally, the latest emission control systems, particulate filters, selective catalytic reduction systems further contribute to the clean diesel branding—ultra-low sulfur diesel fuel is the final piece to the clean design puzzle.

CHECK OUT: Toyota ‘Project Portal’ hydrogen fuel-cell heavy-duty semi tractor as proof of concept

Major, developed countries rely heavily on semi trucks to move goods to their final destinations and can play a major part in reducing global emissions.

Continued progress to make them cleaner and more efficient only benefits everyone at the end of the day.

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