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. 27, 1992
Filed:
Jun. 05, 1990
Applicant:
Inventors:
Assignee:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60Q / ;
U.S. Cl.
CPC ...
3404503 ; 1231 / ; 1841031 ; 340624 ;
Abstract
An oil supply system for an internal combustion engine, having an oil supplementing pump and an oil level sensor arranged in an oil pan for initiating the operation of the oil supplementing pump. A temperature of the oil is detected every time the engine is stopped, and this value is stored. A drop in the temperature of the oil when the engine is started is detected from the stored value of the temperature obtained when the engine was stopped. When a drop of the engine temperature is larger than a predetermined value, an oil supplementing operation is carried out.