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. 06, 1981
Filed:
Apr. 27, 1978
Applicant:
Inventor:
Takashi Hisatomi, Yokohama, JP;
Assignee:
Nissan Motor Company, Limited, Yokohama, JP;
Primary Examiner:
Int. Cl.
CPC ...
F02P / ; F02B / ; F02N / ;
U.S. Cl.
CPC ...
123638 ; 123310 ; 1231 / ; 123568 ;
Abstract
A dual spark plug ignition engine with an EGR system is provided with an ignition system which is arranged to achieve single spark plug ignition by sensing a considerably low intake vacuum which represents high power output engine operating range. The engine is further provided with an engine starting sensing switch to cause the ignition system to carry out dual spark plug ignition during engine starting although the intake vacuum is considerably low as at the high power output engine operating range.