The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 10, 2020
Filed:
Mar. 08, 2017
Mazda Motor Corporation, Hiroshima, JP;
Mitsuyuki Murotani, Hiroshima, JP;
Takafumi Nishio, Otake, JP;
Shuhei Tsujita, Hatsukaichi, JP;
Einosuke Suekuni, Higashihiroshima, JP;
Junji Umemura, Aki-gun, JP;
MAZDA MOTOR CORPORATION, Hiroshima, JP;
Abstract
An exhaust passageincludes: a first passage (high-speed passages, and); and a second passage (low-speed passages, and). A turbine housingis connected to the exhaust passagedownstream from the collector. An exhaust deviceof an engineincludes a valve (an exhaust variable valve) to open and close the first passage. A controller (an engine controller) closes the valve if an engine speed of the engineis lower than a predetermined engine speed and opens the valve if the engine speed of the engineis higher than or equal to the predetermined engine speed. The controller opens the valve even though the engine speed of the engineis lower than the predetermined engine speed if performing the fuel cut control.