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:
Feb. 21, 2006
Filed:
Sep. 13, 2004
Tomoyuki Kaga, Lafayette, CA (US);
Tomoyuki Kaga, Lafayette, CA (US);
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A control device of an internal combustion engine provided with throttle air passage calculating means for calculating an amount of throttle air passage through a throttle valve, excess air calculating means for calculating an amount of excess air to a cylinder corresponding to drop in air pressure in intake pipe due to an intake valve for that cylinder opening, cylinder air charge estimating means for estimating a cylinder air charge amount for each cylinder based on the amount of throttle air passage detected by the throttle air passage detecting means and an amount of excess air calculated by the excess air calculating means, and engine control means for controlling the internal combustion engine based on the cylinder air charge amount for each cylinder estimated by the cylinder air charge estimating means.