Patent ID: 8658013
Filing Date: 2014-02-25
Classification: G01N,H01M,Y02E

Abstract:
1. A system for sensing the oxygen-to-carbon (O/C) ratio of a reference gas, said system comprising: a sensor comprising a sensor electronic control module in electrical communication with the sensor and further in communication with the reformer electronic control module; a heater disposed in thermal communication with the sensor; a temperature sensor disposed in thermal communication with the heater and in electronic communication with the sensor control module for maintaining the sensor at a desired operating temperature; and an electrical means in electrical communication with the sensor so as to receive a signal corresponding to the emf value at the emf cell and so as to control pump current to the oxygen pump cell to maintain a constant emf at the emf cell, and wherein a pump current value represents an equivalent to the air-fuel ratio of the air-fuel gas mixture.