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:
Jun. 10, 2014
Filed:
Oct. 14, 2008
Hiroyuki Kasahara, Saitama, JP;
Hiroyuki Kasahara, Saitama, JP;
Bosch Corporation, Tokyo, JP;
Abstract
A rationality diagnosis method and a rationality diagnosis apparatus for a sensor inside a tank are provided. The rationality diagnosis method and the rationality diagnosis apparatus can accurately and easily perform a diagnosis to determine whether rationality of all sensors is maintained. The rationality diagnosis method for the sensor inside the tank performs a rationality diagnosis of a concentration sensor, a liquid level sensor and a temperature sensor that are provided inside the tank that stores liquid. The rationality diagnosis method is characterized by diagnosing whether the rationality is lost in one of the concentration sensor, the liquid level sensor and the temperature sensor by determining whether there exists any contradiction between respective sensor values of the concentration sensor, the liquid level sensor and the temperature sensor.