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:
May. 05, 1987
Filed:
Oct. 10, 1985
Applicant:
Inventors:
Assignee:
NGK Insulators, Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B / ;
U.S. Cl.
CPC ...
123270 ; 123669 ;
Abstract
A precombustion chamber construction of an internal combustion engine includes an upper ceramic body and a lower ceramic body abutting thereagainst to form a precombustion chamber communicating through an injection hole with a main combustion chamber. According to the invention at least a portion of abutting surfaces of the upper and lower ceramic bodies is inclined relative to a plane perpendicular to a longitudinal axis of the precombustion chamber, thereby preventing any relative rotative movement of the upper and lower ceramic bodies even if they are subjected to rotating forces caused by vibrations of the engine or explosion of fuel.