Internal-combustion engines – Charge forming device – Including exhaust gas condition responsive means
Patent
1993-09-09
1994-06-21
Argenbright, Tony M.
Internal-combustion engines
Charge forming device
Including exhaust gas condition responsive means
123694, F02D 4114
Patent
active
053220471
ABSTRACT:
The temperature compensated air/fuel ratio controller is used in conjunction with an internal combustion engine. The method includes electronically sensing the oxygen content and the temperature of the exhaust gas generated by the engine. It was discovered that the oxygen content signal varies in a curvilinear manner with respect to the temperature. The oxygen content signal is therefore compensated in both the linear and non-linear signal regions. The compensated oxygen content signal is then used to control the air/fuel ratio of the engine. In a working embodiment, the temperature compensated air/fuel ratio controller utilizes a zirconium oxide oxygen sensor. One type of circuitry designed to compensate the oxygen content signal in both the linear and non-linear signal regions includes, in one embodiment, electronic circuitry that segments the curvilinear function into linear segments and generates a plurality of linear compensatory signals which are added to the oxygen content signal. The compensated oxygen signal is then applied to a PID controller in the control loop of the engine.
REFERENCES:
patent: 3915135 (1975-10-01), Kushida et al.
patent: 4030462 (1977-06-01), Sasayama et al.
patent: 4150562 (1979-04-01), Nielsen
patent: 4156404 (1979-05-01), Anzai
patent: 5033438 (1991-07-01), Feldinger et al.
AF-1000 Series Air/Fuel Ratio Controllers for Carbureted Engines, Published 1992, by Dynalco Controls of Ft. Lauderdale, Fla.
AF-1011 Air/Fuel Ratio Controller for Single Bank, Carbureted, Naturally Aspirated Engines, Product Manual, Published Aug., 1991, by Dynalco Controls of Ft. Lauderdale, Fla.
Nye Dudley D.
Oliu Joaquin
Weaver Donald A.
Argenbright Tony M.
Dynalco Controls, Inc.
LandOfFree
Temperature compensated air/fuel ratio controller and method the does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Temperature compensated air/fuel ratio controller and method the, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temperature compensated air/fuel ratio controller and method the will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2215255