System for feedback control of air/fuel ratio in IC engine with

Details System for feedback control of air/fuel ratio in IC engine with System for feedback control of air/fuel ratio in IC engine with

1980-10-03

1982-10-19

Cuchlinski, Jr., William A.

Internal-combustion engines

Charge forming device

Having fluidic logic control means

123489, 123492, F02D 500

Patent

active

043544681

ABSTRACT:
A system for feedback control of air/fuel ratio in an IC engine, utilizing a recently developed oxygen-sensitive device which is provided with a heater and disposed in exhaust gas to provide a feedback signal. This device has a porous solid electrolyte layer with a measurement electrode layer on one side and a reference electrode on the other side facing a substrate. There is a circuit to supply a heating current to the heater and force a DC current to flow in the solid electrolyte layer to cause migration of oxygen ions through the solid electrolyte toward the reference electrode to thereby establish a reference oxygen partial pressure on the reference side of the solid electrolyte layer. To prevent lowering of this oxygen partial pressure while the engine is operated under a high-load condition and the feedback control is discontinued to feed the engine with a fuel-enriched mixture, the control system includes operating condition sensor means and switching means to interrupt the supply of the current to the heater in response to a command signal from the sensor means and, optionally, current regulating means to increase the intensity of current flowing in the solid electrolyte also in response to the command signal.

REFERENCES:
patent: 4103649 (1978-08-01), Matumoto et al.
patent: 4129099 (1978-12-01), Howarth
patent: 4207159 (1980-06-01), Kimura et al.
patent: 4248196 (1981-02-01), Toelle

Affiliated with

Also associated with

Rating

System for feedback control of air/fuel ratio in IC engine with does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System for feedback control of air/fuel ratio in IC engine with , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for feedback control of air/fuel ratio in IC engine with will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1334743