US Patent Issued to Hitachi Astemo on July 29 for "Control device and control method for variable valve timing mechanism" (Japanese Inventors)

ALEXANDRIA, Va., July 30 -- United States Patent no. 12,372,015, issued on July 29, was assigned to Hitachi Astemo Ltd. (Hitachinaka, Japan).

"Control device and control method for variable valve timing mechanism" was invented by Masaki Kosuda (Hitachinaka, Japan), Hirokazu Shimizu (Hitachinaka, Japan) and Nobuhiko Matsuo (Hitachinaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A control device and a control method for a variable valve timing mechanism are provided so as to improve the accuracy of cam phase angle interpolation without using a motor rotation angle sensor. The control device for the variable valve timing mechanism includes a controller configured to detect a phase angle of a cam base...