US Patent Issued to DENSO on July 28 for "Malfunction diagnosis device for leakage diagnosis device" (Japanese Inventors)

ALEXANDRIA, Va., July 28 -- United States Patent no. 12,692,829, issued on July 28, was assigned to DENSO Corp. (Kariya-city, Japan).

"Malfunction diagnosis device for leakage diagnosis device" was invented by Keiichirou Ishihara (Kariya-city, Japan), Taiki Yasuzaka (Kariya-city, Japan), Tomohiro Itoh (Kariya-city, Japan) and Yasuo Kato (Kariya-city, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A leakage diagnosis device for an evaporative fuel treatment device includes a first vent valve, a second vent valve, and a pump. The first vent valve is configured to block a first atmospheric passage, which is a main passage of an atmospheric passage and connects a canister with an atmospheric opening. The s...