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:
Jan. 04, 1977
Filed:
Feb. 28, 1975
Masaaki Noguchi, Nagoya, JA;
Shougo Sanda, Okazaki, JA;
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JA;
Abstract
An internal combustion engine of the type having a main combustion chamber and an auxiliary combustion or precombustion chamber intercommunicated through a passage with the former for burning a lean fuel-air mixture in order to reduce the harmful emissions. The shape of the main combustion chamber, the intake port and the intake valve are so designed that a substantial portion of the lean mixture may be directed toward the apex of the spherical inner surface of the dome-shaped main combustion chamber an flow therealong so as to form intensive swirls. The opening at the main combustion chambr of the passage intercommunicating the main and auxiliary combustion chambers is so positioned that the relatively rich fuel-air mixture caused by the centrifugal forces of the swirls may be pushed into the auxiliary combustion chamber and that the combustion flame produced in the latter may be injected at high speeds into the downstreams of the swirls in the main combuston chamber, thereby igniting the lean mixture therein.