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:
Nov. 23, 2021
Filed:
Nov. 05, 2019
Mazda Motor Corporation, Hiroshima, JP;
Shinichi Hikitani, Hiroshima, JP;
Hajime Umehara, Hiroshima, JP;
Naoki Nagano, Hiroshima, JP;
Kenji Sugasaki, Hiroshima, JP;
Shin Kodama, Kure, JP;
Hiromasa Nakagawa, Hatsukaichi, JP;
Tomokuni Kusunoki, Aki-gun, JP;
Taiga Kamiji, Hiroshima, JP;
Masanobu Koutoku, Higashihiroshima, JP;
Toshinori Ueno, Higashihiroshima, JP;
Katsuya Murakami, Hiroshima, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
An intake-air temperature controlling device for an engine is provided, which includes an engine body, an intake passage, an air intake part, an intake air temperature adjuster configured to adjust air temperature taken in through the air intake part to the passage, and a controller. An operating range in which the CI combustion is performed has a lean operating range in which A/F of mixture gas formed inside the cylinder, or G/F that is a relationship between the total weight G of gas inside the cylinder and a weight F of fuel fed to the cylinder is relatively low, and a rich operating range in which the A/F or G/F is relatively high. When the engine is in the lean operating range, the controller outputs a control signal to the intake air temperature adjuster so that the air temperature is increased, as compared in the rich operating range.