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. 03, 2026
Filed:
Jul. 07, 2025
Subaru Corporation, Tokyo, JP;
Naoya Watanabe, Tokyo, JP;
Shota Tobe, Tokyo, JP;
SUBARU CORPORATION, Tokyo, JP;
Abstract
An engine system includes: an engine including a piston, cylinder, intake valve, and exhaust valve; an intake manifold introducing intake air into the engine; an intake pressure sensor detecting intake pressure; and a control device including a processor(s) and a memory(ies). A first threshold, based on the intake pressure at a first timing during rapid warm-up in the engine's initial state, is prepared. The first timing is within one cycle of the engine, after an intake valve opening timing, and before the piston reaches a bottom dead center. The processor(s) execute a process including: obtaining intake pressure at the first timing during warm-up in the engine's current state; determining whether the intake pressure is less than the first threshold; and when the intake pressure is less than the first threshold, advancing a fuel injection timing according to a pressure difference between the first threshold and the intake pressure.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile