Mazda may have found a way to keep its Skyactiv-X compression ignition system alive with a surprising two-plug twist.

Mazda filed patents for a dual-spark-plug Skyactiv-X engine that enables more aggressive EGR and better lean combustion — a ...

Compression ignition basically is the term that is used for describing the manner in which diesel engines function. It happens when intake air—which often is combined with recirculating exhaust gas—is ...

Gasoline and diesel engines work on similar principles, but there are some important differences, including the fact that ...

EPA is amending the national marine diesel engine program to provide relief provisions to address concerns associated with obtaining and installing certified Tier 4 marine diesel engines in certain ...