Let's Stay the Course on Clean Diesel: Progress Is Being Made

A lot of Americans are unaware of how much progress has been made in terms of eliminating pollutants like nitrogen oxide (NOx) and carbon dioxide (CO2). Did you know that the new diesel trucks are so clean that it would take 60 of today's new generation diesels to equal the emissions from one truck sold in 1988? New technology diesel engines and the increased use of biobased diesel have contributed to noteworthy carbon reduction and clean air gains. 

All this has been documented, according to a recent Earth Day announcement from the Diesel Technology Forum. "Today, diesel remains the dominant technology in long-haul trucking, powering 97 percent of Class 8 big-rig trucks in the United States. A growing percentage of diesel-powered commercial trucks rely on the newest-generation diesel technologies, which deliver near-zero emissions performance while using less fuel."

The announcement begins by acknowledging the new emphasis on reducing greenhouse gas emissions and tackling the climate challenge. To do this requires thinking through solutions and timetables that are customized to the realities of our time. Timetables have to correspond. But progress has already been extensive.

Today, more than 43 percent of commercial Class 3-8 vehicles utilize the newest generation technology (2011 and newer model years), up 6.8 percent over 2017. Since 2011, these nearly 5 million new-generation commercial diesel trucks "have already delivered reductions of greenhouse gases (carbon dioxide (CO2)) in an amount equivalent to eliminating 26 million light-duty vehicles from the fleet or converting those to all electric vehicles." In other words, more than 18 million tons of nitrogen oxides (NOx) and 126 million tons of CO2 have been removed.  

In short, tremendous progress has been made, and there's more to come.

Furthermore, in addition to the reduction in greenhouse gases, the advances in diesel technology have produced significant gains in fuel economy. From 2014 to 2018 530 million barrels of oil were saved in Phase 1, according to the EPA and the National Highway Traffic Safety Administration (NHTSA). Phase 2 rules will save nearly 2 billion barrels of oil from now till 2027.

 As diesel technology evolves, the four trends are defining the direction advances will take. First, increasing energy efficiency. Second, achieving low emissions. Third, expanding the use of renewable biodiesel fuels. And fourth, hybridization. We live in a world which depends on the transportation of goods. To effectively do this while meeting tomorrow's climate and clean air challenges will require continued innovation and efforts in trucking, marine, agriculture, construction and freight rail applications.

The steady progress in carbon reduction and clean air gains has been somewhat remarkable. It has also been fairly unheralded. This is why the Diesel Technology Forum strives to get the word out and works hard to increase awareness of its mission. 

Read the full Earth Day announcement here:  
ACCELERATING TURNOVER TO NEW TECHNOLOGY DIESEL ENGINES, INCREASED USE OF BIOBASED DIESEL FUELS ENSURE STEADY PROGRESS ON CARBON REDUCTION, CLEAN AIR GAINS