Beginning in October, the exhaust from newly manufactured diesel engines must produce half the oxides of nitrogen (NOx) of engines produced today with no increase in particulate matter (PM). This is ...

Volvo developed Precision Flow exhaust-gas recirculation (EGR) to improve fuel economy by 3 percent even as they met EPA's 2007 emissions standards for on-road diesel engines. An electronic ...

Q: I took my car to my mechanic for the check engine light being on. He checked the codes and said it’s an “EGR fault” He said it would be a couple of days before he could get to it. He said I could ...

A look into the exhaust gas recirculation, or EGR, valve - an important piece of the automotive emissions system.

The Dorothy Tornadic EGR Cleaner is designed to remove heavy soot particles from the exhaust gas recirculation system and feed the cleaner gases back into the engine. The process can lower NOx ...