Title:
【考案の名称】空燃比制御装置
Document Type and Number:
Japanese Patent JPS6042367
Kind Code:
Y2
Abstract:
A system for feedback control of air/fuel ratio in an internal combustion engine, utilizing an oxygen-sensitive air/fuel ratio detector disposed in an exhaust gas to provide a feedback signal is disclosed. The detector has a flat and microscopically porous solid electrolyte layer with a measurement electrode layer on one side and a reference electrode layer on the other side facing a substrate. The control system includes a current supplying circuit to force a DC current to flow in the solid electrolyte layer between the two electrode layers to cause migration of oxygen ions through the solid electrolyte layer from the measurement electrode toward the reference electrode to thereby establish a reference oxygen partial pressure at the interface between the reference electrode layer and the solid electrolyte layer. To preclude an undesirably great rise of this reference oxygen partial pressure in the case of a large increase in the amount of oxygen in the exhaust gas resulting from interruption, or great reduction, of the feed of fuel to the operating engine, the control system comprises sensor means to detect the existence of such a condition and means for temporarily decreasing the intensity of the current being supplied to the air/fuel ratio detector.
Inventors:
Sone Kouki
Kenji Okamura
Toyoaki Nakagawa
Kenji Okamura
Toyoaki Nakagawa
Application Number:
JP13408479U
Publication Date:
December 26, 1985
Filing Date:
September 28, 1979
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
F01N9/00; F02D37/00; F02D41/14; F02M7/00; F02P5/15; G01N27/26; G01N27/406; G01N27/407; G01N27/409; G05D11/13; F02B1/04; (IPC1-7): G01N27/58; F02D41/04; G01N27/26
Attorney, Agent or Firm:
Goto Masaki
Previous Patent: The personal information undisplayed-ized method and a business system
Next Patent: FREDERICAMYCIN A-DIACYL DERIVATIVE
Next Patent: FREDERICAMYCIN A-DIACYL DERIVATIVE