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:
Nov. 02, 1999
Filed:
Apr. 06, 1998
Masato Sahashi, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A control device for a heater for an air fuel ratio sensor attached close to a sensor element of an air fuel ratio sensor located in an intake passage of an intake passage. The control device comprises an ambient temperature related parameter detecting means for detecting a parameter related an ambient temperature of the air fuel ratio sensor, an intake air amount related parameter detecting means for detecting a parameter related amount of fresh intake air introduced into intake passage, and supply power controlling means for controlling supply power based on a parameter detected by an ambient temperature related parameter detecting means and a parameter detected by an intake air amount related parameter detecting means.