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. 04, 1997
Filed:
Sep. 23, 1996
Applicant:
Inventor:
Hideharu Kadooka, Isehara, JP;
Assignee:
Nissan Motor Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
123520 ;
Abstract
The ON/OFF frequency of a purge control valve is defined by a product of an integer and a frequency of REF signal, where the integer does not have a divisor equal to any of the divisors of the number of the cylinders of the engine, other than one. The engine is prevented from being supplied a purge gas concentratedly to a specific cylinder by opening the purge control valve for every five cylinders, for example.