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. 14, 1995
Filed:
Jun. 30, 1994
Applicant:
Inventors:
Assignee:
Mazda Motor Corporation, Hiroshima, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B / ; F02P / ;
U.S. Cl.
CPC ...
123256 ; 123310 ;
Abstract
An ignition system for an internal combustion engine has a plurality of peripheral ignition gaps arranged at appropriate separations along the periphery of a combustion chamber and a center ignition gap disposed at a center of the combustion chamber. The ignition gaps are selectively used according to engine operating conditions so that only the peripheral ignition gaps produce sparks when the engine operates under low engine loads and the center ignition gap and the peripheral ignition gaps all produce sparks at once when the engine operates under high engine loads.