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:
Jan. 03, 2023
Filed:
Oct. 29, 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 an intake-valve-closing temperature inside a cylinder. When an engine operates at a given speed and a demanded engine load is a first load or a second load (>the first load), the controller controls so that a mixture gas inside the cylinder combusts by compression ignition, and controls so that, at the first load, the entire mixture gas combusts by compression ignition when the intake-valve-closing temperature is above a first temperature, and at least part of the mixture gas combusts by flame propagation when the intake-valve-closing temperature is below the first temperature, whereas at the second load, the entire mixture gas combusts by compression ignition when the intake-valve-closing temperature is above a second temperature (<the first temperature), and at least part of the mixture gas combusts by flame propagation when the intake-valve-closing temperature is below the second temperature.