First, the chemical quill was disconnected and removed from the 2-inch fitting, leaving the 2-inch quill stub and a control valve. A special 8-inch diameter fitting was welded over the 2-inch stub.

Fuel injection offers drivers increased efficiency and power. But there's a common problem, too: carbon buildup on the engine's intake valves.

Researchers at Purdue University's College of Engineering are conducting tests on a patented Tesla valve-inspired injection manifold design to improve the efficiency of rotating detonation engines ...