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:
Apr. 03, 2012
Filed:
Feb. 24, 2009
Masahisa Yamakawa, Hiroshima, JP;
Toshiaki Nishimoto, Hiroshima, JP;
Hirokazu Matsuura, Higashihiroshima, JP;
Takashi Youso, Hiroshima, JP;
Kouji Shishime, Hiroshima, JP;
Mikinori Ohashi, Hiroshima, JP;
Masahisa Yamakawa, Hiroshima, JP;
Toshiaki Nishimoto, Hiroshima, JP;
Hirokazu Matsuura, Higashihiroshima, JP;
Takashi Youso, Hiroshima, JP;
Kouji Shishime, Hiroshima, JP;
Mikinori Ohashi, Hiroshima, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
Methods and systems for controlling an internal combustion engine are provided. One example method may include closing an intake valve later during a cylinder cycle than a timing with which an amount of air inducted into a cylinder from an air intake passage would be maximized, and earlier during the cylinder cycle as a desired amount of air to be inducted into the cylinder increases, while an engine is operating at a given engine speed. The method may further include closing the intake valve earlier during a cylinder cycle as the engine speed increases when the desired amount of air to be inducted into the cylinder is at a maximum.