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:
Dec. 12, 1978
Filed:
Jun. 06, 1977
Nobuo Habu, Susono, JP;
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JP;
Abstract
Disclosed is an internal combustion engine comprising a main chamber and an auxiliary chamber which are interconnected with each other via a connecting passage. The connecting passage is tangentially connected to the inner wall of the auxiliary chamber. A raised portion is formed on the inner wall of the auxiliary chamber at a position located opposite to the inner wall to which the connecting passage is tangentially connected with respect to the axis of the auxiliary chamber. A recess is formed on the inner wall beneath the raised portion. The nozzle of a fuel injector is directed to the recess so as to form a rich air-fuel mixture therein. The spark gap of a spark plug is located in the recess for igniting the righ air-fuel mixture therein. An additional passage communicating the recess with the main chamber is formed in the cylinder head so that gas forced into the recess from the main chamber through the additional passage at the time of the compression stroke directly impinges upon the insulator covering the central electrode of the spark plug for diluting the rich air-fuel mixture formed around the insulator of the central electrode.