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:
Jul. 19, 2022
Filed:
Oct. 28, 2021
Mazda Motor Corporation, Hiroshima, JP;
Takashi Kaminaga, Aki-gun, JP;
Tatsuya Fujikawa, Aki-gun, JP;
Masahisa Yamakawa, Aki-gun, JP;
Naoya Ito, Aki-gun, JP;
Ryohei Matsuo, Aki-gun, JP;
Yuta Sasaki, Aki-gun, JP;
Junki Hori, Aki-gun, JP;
Mitsuhiro Muto, Aki-gun, JP;
Takuma Fujii, Aki-gun, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
An engine system is provided, including a controller which estimates a mass ratio (G/F) of intake air inside a cylinder (containing fresh air and burnt gas) to fuel, and controls devices of an engine at a given engine speed so that, while a demanded engine load is a first load, at least part of a mixture gas inside the cylinder combusts by flame-propagation when the estimated G/F is below a first G/F, and the entire mixture gas combusts by compression ignition when the estimated G/F is above the first G/F, whereas while the demanded load is a second load (>the first load), at least part of the mixture gas combusts by flame-propagation when the estimated G/F is below a second G/F (<the first G/F), and the entire mixture gas combusts by compression ignition when the estimated G/F is above the second G/F.