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:
Mar. 21, 1978
Filed:
Apr. 23, 1976
Applicant:
Inventors:
Yoshimasa Hayashi, Yokohama, JA;
Tadashi Nagai, Yokosuka, JA;
Assignee:
Nissan Motor Company, Ltd., , JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01P / ;
U.S. Cl.
CPC ...
123 4157 ; 123 4177 ; 123 4185 ; 1231 / ; 1231 / ; 1231 / ;
Abstract
An internal combustion engine has a cylinder head formed with a cooling liquid passageway and an air space. The cylinder head has a combustion chamber cooled by cooling liquid flowing through the passageway and an exhaust valve and exhaust port passage cooled by cooling air conducted by the air space. An insulating air space surrounds an exhaust port passage extending from the exhaust valve. As a result cooling effect by the cooling air on exhaust gas flowing through the exhaust port passage is reduced.