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. 12, 2010
Filed:
Sep. 20, 2005
Takeshi Kotani, Nisshin, JP;
Takeshi Kotani, Nisshin, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A hybrid vehicle is provided, in which lean limit operation of an engine can be achieved while consumption of electric power of a battery is suppressed when a change of engine torque in the vicinity of a lean limit is suppressed or when an air-fuel ratio is controlled so as to come close to a lean limit during engine operation. The hybrid vehicle, in which an engine, a motor-generator, and a drive wheel are mutually connected via a differential connection unit, includes a control device which maintains an output of the engine at a constant level by increasing/decreasing an engine rotational speed and decreasing/increasing a rotational speed of the motor-generator in accordance with a decrease/increase of the engine torque in the vicinity of the lean limit.