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:
Jun. 21, 1983
Filed:
Apr. 10, 1981
Kenji Masaki, Yokohama, JP;
Nissan Motor Company, Limited, Yokohama, JP;
Abstract
An air-fuel ratio control system is disclosed for use with a carburettor including an air-fuel induction passage provided therein with a throttle valve. The system comprises a control circuit responsive to various engine operating factors for deriving an engine operating condition and providing a pulse signal having a constant period and a pulse width corresponding to the derived engine operating condition, fuel supply means for supplying fuel, a fuel passage connected at its one end to the fuel supply means and at the other end to the induction passage downstream of the throttle valve, and a control valve provided in the fuel passage, the control valve responsive to the pulse signal from the control circuit for controlling the flow of fluid passing therethrough thereby providing an optimum air-fuel ratio corresponding to the engine operating condition.