US Patent Issued to Hitachi Astemo on Feb. 25 for "Electronic control device and combustion state detection system" (Japanese Inventors)

ALEXANDRIA, Va., Feb. 26 -- United States Patent no. 12,234,787, issued on Feb. 25, was assigned to Hitachi Astemo Ltd. (Hitachinaka, Japan).

"Electronic control device and combustion state detection system" was invented by Toshihiro Aono (Tokyo), Osamu Mukaihara (Hitachinaka, Japan) and Kotaro Oki (Hitachinaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A rotation speed or a rotation time of a crankshaft at a certain angle is calculated on a basis of a change in a detection signal of a sensor of the crankshaft. Then, when a combustion cylinder is switched, information on the rotation speed or the rotation time for at least two combustion cycles is obtained, and a combustion phase is calculated on ...