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:
Jan. 23, 2007
Filed:
Aug. 23, 2005
Noriyasu Adachi, Numazu, JP;
Tetsuji Nagata, Kariya, JP;
Noriyasu Adachi, Numazu, JP;
Tetsuji Nagata, Kariya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A reference injection quantity of fuel to be injected from a port injection valve and an in-cylinder injection valve as well as an injection ratio are determined based on an operation condition. A ratio between a feedback correction amount for port injection and a feedback correction amount for in-cylinder injection is set equal to a ratio of the reference injection quantity. If an injection quantity obtained as a result of addition of a correction amount is smaller than a minimum injection quantity of the injection valve, feedback correction is prohibited. Meanwhile, if the feedback correction amount is small, only the injection valve attaining a larger injection quantity is subjected to feedback correction.