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. 17, 2015
Filed:
Jun. 20, 2011
Hiroshi Katsurahara, Okazaki, JP;
Osamu Fukasawa, Nagoya, JP;
Tomoaki Nakano, Toyota, JP;
Masahiro Yokoi, Kariya, JP;
Kota Noguchi, Kariya, JP;
Atsushi Koike, Anjo, JP;
Hiroshi Katsurahara, Okazaki, JP;
Osamu Fukasawa, Nagoya, JP;
Tomoaki Nakano, Toyota, JP;
Masahiro Yokoi, Kariya, JP;
Kota Noguchi, Kariya, JP;
Atsushi Koike, Anjo, JP;
Denso Corporation, Kariya, JP;
Abstract
A fuel injection control device for an engine executes a split injection constructed by a fixed injection and a variable injection. A required injection amount of the fixed injection is set in a low range. A required injection amount of the variable injection is set in a high range. An injection amount in the high range is larger than that of the low range. The required injection amount of the variable injection is changed within the high range while the required injection amount of the fixed injection is fixed when a load of the engine is varied while the split injection is performed. An injection control characteristic is corrected based on an actual air-fuel ratio detected before the load is varied and an actual air-fuel ratio detected after the load is varied.