Fuel supply system for combustion engines

F - Mech Eng,Light,Heat,Weapons – 02 – D

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341/38.1

F02D 29/00 (2006.01) F02D 19/08 (2006.01) F02D 41/00 (2006.01) G01N 21/43 (2006.01)

Patent

CA 1178692

ABSTRACT An apparatus for controlling the air-fuel ratio in a fuel supply system for combustion engines, comprising an opto-electronic sensor for measuring the index of light refraction of the fuel, said opto-electronic sensor including a light source, a light conductor positioned at least partially in contact with the fuel, and a light receiver; an electronic circuit responsive to said opto-electronic sensor for generating a control signal in accordance with the instantaneous state of agregation or composition of said fuel to control a dosage device of said air-fuel ration; and a temperature detecting element positioned in the fuel supply conduit and connected to said electronic circuit for correcting the measured index of refraction and thereby the control signal in accordance with temperature changes in the supplied fuel.

381800

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