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:
Sep. 06, 1977
Filed:
Feb. 05, 1976
Tetsuro Nagano, Susono, JA;
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JA;
Abstract
A combustion chamber structure for an internal combustion engine, which combustion chamber structure includes a main combustion chamber and a separate auxiliary combustion chamber. The main combustion chamber is supplied solely with air by a conventional intake valve. A passage interconnects the main and auxiliary combustion chambers for permitting air to flow into the auxiliary combustion chamber during the compression stroke of the piston. The auxiliary combustion chamber has a fuel-injection nozzle and a spark ignition plug associated therewith. An obstacle, such as a spherical or cylindrical member, is positioned within but spaced from the sidewall of the auxiliary combustion chamber, whereby a circular flow pattern is created within the auxiliary combustion chamber which improves the fuel atomization and the uniformity of the fuel-air mixture. The spark plug is positioned adjacent the passage which interconnects the chambers so as to result in proper stratified combustion within the main chamber, while also minimizing noise.