ALEXANDRIA, Va., June 4 -- United States Patent no. 12,322,544, issued on June 3, was assigned to BOSCH Corp. (Tokyo).
"Purge valve driving control device" was invented by Takashi Nonoyama (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a purge valve driving control device capable of detecting abnormality by utilizing an existing circuit as much as possible while securing resolution and accuracy of solenoid resistance value detection. A battery voltage is applied to one end of a solenoid 1a through a first connection terminal 3a, and the other end is connected to a second connection terminal 3b. In a driver circuit 120, a drive transistor 4 and a shunt resistor 5 are connected in ...