US Patent Issued to SAUDI ARABIAN OIL on May 12 for "Stratified nitrogen enriched air (NEA) strategies and methods to reduce NOx emissions from engines" (Saudi Arabia Inventors)

ALEXANDRIA, Va., May 12 -- United States Patent no. 12,624,654, issued on May 12, was assigned to SAUDI ARABIAN OIL COMPANY (Dhahran, Saudi Arabia).

"Stratified nitrogen enriched air (NEA) strategies and methods to reduce NOx emissions from engines" was invented by Vallinayagam Raman (Dhahran, Saudi Arabia), Jaeheon Sim (Dhahran, Saudi Arabia) and Junseok Chang (Dhahran, Saudi Arabia).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for injecting nitrogen into an internal combustion engine cylinder includes moving a piston back and forth in a cylinder and injecting pure nitrogen into a combustion chamber during the compression stroke. The method includes injecting the fuel and nitrogen into different r...