Uego sensor air-fuel ratio determination system and method

A computer readable medium having embodied therein a program for causing a processor to execute a method of determining an air-fuel ratio of an internal combustion engine in real-time, the program including operations comprising:

• calibrating sensitivity of a universal exhaust gas oxygen sensor to a plurality of gases;
• inputting to a universal exhaust gas oxygen sensor controller a molecular composition of Hydrogen, Carbon, Oxygen, and Nitrogen which comprise a combustion fuel in use in the internal combustion engine;
• calculating with the universal exhaust gas oxygen sensor controller an air-to-fuel ratio by performing a chemical balance equation calculation based on the universal exhaust gas oxygen sensor sensitivity calibration and the input combustion fuel molecular composition;
• and
• transmitting the calculated air-to-fuel ratio to an engine control unit in real-time.

A system for determining an air-fuel ratio of an internal combustion engine in real-time, the system comprising:

• an engine control unit;
• a universal exhaust gas oxygen sensor mounted in an exhaust stream;
• and
• a universal exhaust gas oxygen sensor controller which receives a signal from the universal exhaust gas oxygen sensor and performs a chemical balance equation calculation to calculate air-to-fuel ratio in real-time based on the received signal,
• wherein the universal exhaust gas oxygen sensor controller communicates the calculated air-to-fuel ratio to the engine control unit in real-time, and
• the engine control unit provides real-time control of the internal combustion engine to maintain the air-to-fuel ratio communicated from the universal exhaust gas oxygen sensor controller.