5 Articles
Diesel engine manufacturers react to Navistar's Clean Air Act lawsuit

In a lawsuit filed in early July, Navistar, a U.S.-based manufacturer of heavy-duty diesel engines, accused U.S. Environmental Protection Agency director, Lisa Jackson, of not upholding the Clean Air Act and the Agency of not acting to protect public health. At issue is whether emissions-control systems that rely on a fluid (for example, a urea solut