How are modern clean diesel systems different from the engines of 10 years ago?
The industry has made significant strides in recent years to develop diesel systems that are cleaner and more efficient than ever before. Thanks to state-of-the-art engines, cleaner-burning fuels, effective emissions-control systems, and advancements in the fuel injection system, it would take 60 trucks sold today to equal the soot emissions of one 1988 truck. Data from the U.S. Environmental Protection Agency (EPA) shows that the level of diesel particulates in the air fell by more than 37 percent during the 1990s.
