US Patent Issued to Hitachi Astemo on May 13 for "Control device for variable compression ratio mechanism, and diagnostic method for same" (Japanese Inventors)

ALEXANDRIA, Va., June 12 -- United States Patent no. 12,297,784, issued on May 13, was assigned to Hitachi Astemo Ltd. (Hitachinaka, Japan).

"Control device for variable compression ratio mechanism, and diagnostic method for same" was invented by Yuya Shinozaki (Hitachinaka, Japan) and Akira Kiyomura (Hitachinaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A control device for a variable compression ratio mechanism for changing a compression ratio of an internal combustion engine by rotating a control shaft connected to an output shaft of an actuator, wherein with respect to a reference position, the control device determines the rotation angle of the control shaft by sequentially integrating the o...