Internal-combustion engines – Charge forming device – Multiple carburetors
Patent
1986-03-25
1987-11-17
Wolfe, Jr., Willis R.
Internal-combustion engines
Charge forming device
Multiple carburetors
204406, 204426, F02M 2306, F02M 2308
Patent
active
047066377
ABSTRACT:
An oxygen concentration sensing device for use in an air-fuel ratio control system of an internal combustion engine includes a pair of solid electrolyte members having oxygen ion permeability which are disposed in the exhaust gas of the engine and arranged to face each other forming a predetermined gap portion between them. Each of the solid electrolyte members is provided with a pair of electrodes. One of the solid electrolyte members is operative as an oxygen pump element when a predetermined constant electric current is supplied across the electrodes thereof. An electric potential developed across the electrodes of the other one of the solid electrolyte members operative as a cell element is supplied to a comparing means in which the input signal from the solid electrolyte member is compared with a predetermined reference potential and a result of comparison is provided as an oxygen concentration detection signal. In an application of the oxygen concentration sensing device according to the invention in an air-fuel ratio control system, the magnitude of the constant current supplied to the oxygen pump element is varied with the value of a target air-fuel ratio which is controlled in response to various operational parameters of the engine.
REFERENCES:
patent: 4306957 (1981-12-01), Ishitani et al.
patent: 4578172 (1986-03-01), Yamada et al.
patent: 4586476 (1986-05-01), Asayama et al.
patent: 4615787 (1986-10-01), Yamada et al.
Asakura Masahiko
Hasebe Hiroshi
Kawanabe Tomohiko
Kushida Noritaka
Honda Giken Kogyo Kabushiki Kaisha
Wolfe, Jr. Willis R.
LandOfFree
Oxygen concentration sensing device for an air-fuel ratio contro does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Oxygen concentration sensing device for an air-fuel ratio contro, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oxygen concentration sensing device for an air-fuel ratio contro will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1443267