MENU
SEARCHSince the first clean diesel engines were introduced more than seven years ago, they now represent about one-third of all the trucks registered to operate on U.S. highways. The total population of in-service clean diesel engines now numbers about 2.8 million.
More than one-third of all medium and heavy duty commercial trucks registered in the United States are now equipped with newer technology clean diesel engines.
According to new data compiled by IHS Automotive for the Diesel Technology Forum, 2.9 million of the nation's 8.8 million trucks are now powered clean diesels.
“Because more than 95% of all heavy-duty trucks are diesel-powered it is significant that more than one-third of these trucks are near-zero emission vehicles,” says Allen Schaeffer, executive director of the Diesel Technology Forum. “Diesel trucks are literally the driving force behind goods movement in the U.S. and worldwide economies, so the fact that the clean diesel fleet is increasing is good news for improved fuel efficiency and the environment. These new trucks are so clean that it now takes more than 60 of today’s clean diesel trucks to equal the emissions from a single 1988 truck."
The new data includes total registration information on Class 3-8 trucks from 2007 through 2013 in all 50 states and the District of Columbia.
The Top 5 states for 2007 or newer diesels by vehicle population are Indiana (50.4%), Utah (44.8%), Oklahoma (41.9%), Texas (41.9%) and Wyoming (41.4%).
The Top 5 states for 2010 or newer diesels by vehicle population are Indiana (28.7%), Oklahoma (26.6%), Utah (23.4%), Texas (20.7%) and Nebraska (20.5%).
The new clean diesel technology has reduced emissions from heavy-duty diesel trucks and buses by 99% for nitrogen oxides (NOx) and 98% for particulate emissions (PM).
Beginning in 2007, all heavy duty diesel trucks sold had to meet particulate emissions levels of no more than 0.01 grams per brake horse-power hour (g/HP-hr).
“Last year was the fifth consecutive year of increased penetration of the new clean diesel trucks in the fleet, reflecting the continuing confidence that American truckers have in the performance and fuel efficiency improvements of new technology diesel engines,” Schaeffer adds.
The Diesel Technology Forum has more information about clean diesel trucks.
Developed with Driventic, Hendrickson's new integrated e-axle is designed to improve efficiency, reduce weight, and extend range in Class 6-7 EV applications.
Read More →
Fuel savings don’t come from one big change. They come from dozens of small ones. Here’s how leading fleets are stacking gains across drivers, routing, maintenance, and more.
Read More →
What works in sustainable trucking today? Heavy Duty Trucking's Top Green Fleets are finding practical ways to cut fuel use, reduce emissions, and keep freight moving.
Read More →
CARB says the California Clean Fuel Reward program will begin offering point-of-sale rebates of up to $120,000 for electric commercial trucks starting June 26.
Read More →
Along with unveiling its EPA 2027-compliant MP13 engine, Mack outlined powertrain changes across its Class 6-8 lineup, including new Cummins-based X10 engines.
Read More →
Volvo says advances in combustion and aftertreatment helped its new EPA 2027 D13 engine avoid the fuel-economy penalties many once expected from tighter NOx emissions limits.
Read More →
Tesla’s Semi chief at ACT Expo outlined production growth, lower-cost models, charging expansion, and why the company believes fleets are leaving money on the table by waiting on electric trucks.
Read More →
A new report from the Electrification Coalition outlines key barriers slowing electric truck charging deployment and offers policy solutions to accelerate infrastructure growth.
Read More →
NACFE’s Run on Less data has found that recent setbacks aside, electric truck powertrains are trending toward market leadership by 2035.
Read More →
Westport and Volvo are demonstrating a 500-hp truck with diesel-like efficiency — one that also offers what Westport says is a better pathway to using hydrogen fuel in trucks.
Read More →
