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:
Oct. 05, 2010
Filed:
Apr. 05, 2006
Applicants:
Naohide Fuwa, Aichi-ken, JP;
Hisayo Yoshikawa, Nagoya, JP;
Inventors:
Naohide Fuwa, Aichi-ken, JP;
Hisayo Yoshikawa, Nagoya, JP;
Assignees:
Toyota Jidosha Kabushiki Kaisha, , JP;
Denso Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 41/00 (2006.01); F02D 13/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
When it is determined that an engine speed NE rapidly decreases (positive outcome at S), a throttle increase amount TAu and a valve lift increase amount VLu are computed based on a decrease rate NEd of the engine speed NE (S). Then, a target throttle opening degree TAt of a throttle valve and a target maximum valve lift VLt of an intake valve are increased by using the throttle increase amount TAu and the valve lift increase amount VLu (S). As a result, a drop in the engine speed during idling is reliably suppressed.