Purdue University's Greg Shaver doesn't believe there should be a trade-off between protecting the air we breathe and achieving better engine efficiency of large vehicles on the road. Shaver, a ...

Diesel aircraft engines promise lower fuel burn and cheaper operating costs at a time when every gallon and every kilogram ...

Diesel engines have carried the bulk of North America’s freight my entire life. Estimates in 2020 were that diesel trucks carried more than 65% of freight by weight and exceeded 72% by value according ...

In America, the average mpg of a semi truck sits firmly in single-digit territory. Efficiency improvements mean that today's trucks now average around seven mpg, but some states still see trucks ...

Smaller, more powerful and fuel-efficient engines don’t seem to have great long term reliability. Engine recalls from major automakers such as GM, Toyota and Honda have cost billions of dollars. Moves ...