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. 27, 1984
Filed:
Jan. 28, 1983
Junichi Yokoyama, Ebina, JP;
Nissan Motor Company, Limited, Yokohama, JP;
Abstract
A cooling system for a liquid cooled automotive internal combustion engine comprises a first device responsive to the temperature of engine coolant flowing through a first section of a coolant passage leading to a radiator. Additionally, a second device is provided to be operative in response to the first device to control the flow of the coolant flowing through a second section of the coolant passage which second section is located downstream of the first section and upstream of a coolant pump. The second device is constructed and arranged to block the coolant passage second section at one of a low engine load operating range and a no engine load operating range when the coolant temperature is over a first predetermined level and not higher than a second predetermined level which is higher than the first predetermined level, while to allow the coolant flow through the coolant passage second section at all engine operating ranges when the coolant temperature is over the second predetermined level. Accordingly, fuel economy and hydrocarbon exhaust emission are effectively improved.