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Patent

Device for controlling the air-fuel ratio {80 {11 in a combustion engine

C Loos
TLDR
In this article, a device for controlling the air-fuel ratio lambda of the mixture supplied to a combustion engine, comprising a pick-up sensitive to the carbon monoxide content of a gas mixture and arranged in an exhaust gas duct of the engine and producing a voltage increasing with said content, was presented.
Abstract: 
Device for controlling the air-fuel ratio lambda of the mixture supplied to a combustion engine, comprising a pick-up sensitive to the carbon monoxide content of a gas mixture and arranged in an exhaust gas duct of the engine and producing a voltage increasing with said content, a member for controlling the air-fuel ratio lambda and a feedback mechanism acting upon said member so that the ratio lambda is increased when the voltage produced by the pick-up increases.

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Citations
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Patent

Method and apparatus for removal of noxious components from the exhaust of internal combustion engines

Ernst Dipl Ing Linder, +3 more
TL;DR: In this paper, a temperature sensing device senses the temperature of the reactors, and air is admitted to the exhaust system of the engine to control the temperature thereof; an oxygen signal is being sensed representative of oxygen component in the engine and the mass ratio of air to fuel of the mixture supplied to the engine is controlled to provide for proper air-fuel ratio with minimum noxious exhaust.
Patent

Method and apparatus to reduce noxious components in the exhaust emissions of internal combustion engines

Peter Schmidt, +2 more
TL;DR: In this article, the composition of exhaust gases from an internal combustion engine is sensed, particularly the oxygen component thereof, and a sensed signal is derived, which is applied to a threshold detector, which triggers whenever the sensed signal passes a certain threshold value.
Patent

Steady state mode oxygen sensor and method

Robert E. Hetrick, +1 more
TL;DR: In this paper, the authors describe a device to determine the percentage of oxygen in an ambient atmosphere by measuring the change in oxygen partial pressure in the volume relative to the ambient air.
Patent

Air-fuel mixture ratio correcting system for carburetor

Tadashi Hattori, +3 more
TL;DR: In this paper, an air-fuel mixture ratio correcting system for a carburetor in which the air fuel ratio of a mixture fed to an engine is detected whereby to control the amount of auxiliary fuel and/or the amounts of auxiliary air to always control the airfuel ratio of the mixtures at the correct value.
Patent

Method and system for reducing noxious components in the exhaust emission of internal combustion engine systems and particularly during the warm-up phase of the engine

Dieter Eichler, +2 more
TL;DR: In this article, the exhaust system of an engine is provided with a catalytic reactor, for which the air-fuel mixture normally fed to the engine is set to be on the lean range.
References
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Patent

Device for continuously measuring the oxygen content of a molten metal including an electrolytic cell having a solid electrolyte

Dumont-Fillon Jacques, +1 more
Patent

Mixture control system

Charles I Macneil, +1 more
TL;DR: In this paper, it is recognized that the efficiency of an internal combustion engine can be affected by the quality of the air and gasoline, and it is proposed a system for automatically regulating the fuel mixture.