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:
Nov. 26, 1991
Filed:
Apr. 05, 1990
Motohiro Shinzawa, Yokosuka, JP;
Nissan Motor Company, Ltd., Yokohama, JP;
Abstract
A piston crown is formed with a cavity including a first flame deflecting member which is located amid three flame dispersion zones and which splits burning gases ejected from a transfer port into a first dispersion zone, while the piston is proximate its TDC position, into two flows. The arrangement additionally induces the two flows to assume two essentially symmetrical swirling patterns in second and third dispersion zones. After the piston has descended by a predetermined amount, the burning gases are supplied directly into the second and third zones. Important design considerations which influence the efficiency with which the air in the main combustion chamber include the angle at which the gases are directed toward the piston crown, the location of the first flame splitting member with respect to the site where the flame initially impinges on the first dispersion zone, the angle at which the flame is split and directed toward the second and third zones, the areas of the first, second and zones in which the swirling air patterns are produced and the velocity at which the burning gases flow into the second and third zones.