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:
Jan. 03, 1989
Filed:
Sep. 05, 1985
Applicant:
Inventor:
Ryuzaburou Inoue, Yamato, JP;
Assignee:
Nissan Motor Co., Ltd., Yokohama, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
364550 ; 1231 / ; 1231 / ; 731173 ; 340 / ;
Abstract
Herein disclosed in an oil degradation warning system which comprises several sensors for sensing parameters which are closely related to degradation factors of the engine oil, a microcomputer which processes the detected parameters to compute oil degradation coefficients of them in each factor, integrates the oil degradation coefficients in each factor with passage of time, and issues an instruction signal when at least of the integrated values of the oil degradation coefficients exceeds a corresponding reference value, and a warning device which gives a warning when the instruction signal is applied thereto.