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:
Feb. 01, 1977
Filed:
Mar. 26, 1975
Nobuo Habu, Shizuoka, JA;
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JA;
Abstract
An internal combustion engine of the type in which the combustion space is divided into a main combustion chamber and an auxiliary combustion chamber connected to each other by a communication passage, and an ignition plug and a fuel injection nozzle are provided for the auxiliary combustion chamber so that the flame produced by the ignition and combustion of a rich fuel-air mixture in the auxiliary combustion chamber spreads into the main combustion chamber to cause effective secondary combustion of the fuel-air mixture in the main combustion chamber; the upper surface of the piston crown is inclined gradually downward and toward the opposite side from the peripheral edge which is brought to a position adjacent to the communication passage when the piston reaches the top dead center, and a stepped portion located remote from the communication passage and a vertical wall having a configuration consisting of a pair of curved surfaces is formed on the surface of the piston crown as the inner wall of the stepped portion.