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:
Jul. 28, 1998
Filed:
Sep. 24, 1996
Hiroshi Ninomiya, Hiroshima, JP;
Kouji Endo, Hiroshima, JP;
Susumu Inoue, Hiroshima, JP;
Yuji Shitani, Hatsukaichi, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
A control system for a multiple cylinder engine includes a vapor fuel introduction system for introducing a vapor fuel vaporized in a fuel tank. A feedback device is used for setting an air fuel ratio feedback compensation value for each of the cylinders or each group of cylinders of the engine and for executing an air fuel ratio feedback control. A fuel supply device is used for supplying engine fuel for each cylinder so as to equalize the air fuel ratio feedback compensation values of each of the cylinders or each group of the cylinders regardless of a change of an operating condition of a vapor fuel introduction control. A desirable A/F feedback control can be accomplished regardless of the execution of the vapor fuel purge in the multiple cylinder engine.