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. 17, 1981
Filed:
Jul. 12, 1979
Applicant:
Inventors:
Assignee:
Aisan Industry Co., Ltd., Aichi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02M / ; F02B / ; F02B / ;
U.S. Cl.
CPC ...
123445 ; 123489 ; 123434 ;
Abstract
An air-fuel ratio control device capable of accurately controlling the air-fuel ratio of the mixture to be supplied to the engine, without being affected by the external conditions such as the atmospheric pressure and the temperature of the air drawn into the engine. The control signal of the air-fuel ratio control device contains a sensitivity component whose magnitude varies in proportion to a time of duration for which the 'rich' or 'lean' input signal has continued, so that the air-fuel ratio of the mixture can be properly controlled for all engine running conditions, i.e., either when the engine is running under a light load condition or under a heavy load condition.