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:
May. 16, 1995
Filed:
Sep. 01, 1994
Hiroyuki Aoto, Kariya, JP;
Hiroshi Tashiro, Nagoya, JP;
Nippondenso Co., Ltd., Kariya, JP;
Abstract
A system for controlling an excess air ratio of an internal combustion engine for an automotive vehicle is provided which includes a battery, a generator-motor, an air/fuel sensor, and a controller. The generator-motor is mechanically connected to the engine to establish transmission of torque therebetween, and operates in motor and generator modes. In the motor mode, the generator-motor serves as a motor to provide a given amount of torque to the engine under power supply of the battery. In the generator mode, the generator-motor works as a generator to convert engine torque into electric power for charging the battery. The air/fuel sensor determines an excess air ratio of the engine. The controller activates the generator-motor in the motor mode to control the amount of torque to be supplied to the engine based on the excess air ratio so that an air/fuel ratio falls within a preselected range suitable for purification of exhaust gas of the engine.