Raytheon Technologies Corp.’s stock tumbled 10% Tuesday, its worst day in more than three years, after the aerospace and defense company said it needs to remove certain Pratt & Whitney jet engines ...

Sandia National Laboratories researchers (left to right: Nathan Harry, Christopher Nilsen, Drummond Biles, and Charles Mueller) show off their prototype of ducted fuel injection module for diesel ...

Abstract: The control accuracies of the injection time and fuel quantity are the most important factors affecting the fuel economy and emissions of an engine equipped with a high-pressure common-rail ...