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. 24, 2001
Filed:
Jan. 12, 2000
Takeaki Obata, Kanagawa, JP;
Nobutaka Takahashi, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
An intake air control system for an engine having an air intake passage, a throttle valve in the intake passage and an intake valve for selectively opening and closing communication between the intake passage and a cylinder. The control system determines target intake passage pressure and target intake air amount in accordance with engine operating conditions. A target throttle opening is set in accordance with both the target pressure and the target intake air amount. The throttle valve is then driven to the target opening. Intake passage pressure is detected and a target intake valve open/close timing is determined in accordance with both the detected intake passage pressure and the target intake air amount. The intake valve is then driven in accordance with the target open/close timing.