SYSTEM AND METHOD FOR MONITORING EGR AND REGULATING FUEL MIXTURE USING OXYGEN SENSOR
Publication Date: 2016-May-16
The IP.com Prior Art Database
The invention proposes a system and method for monitoring the level of oxygen in air mixed with diluent or exhaust gas recirculation (EGR) for better regulation of air-fuel ratio in the fuel system using. The oxygen is monitored using one or more sensors at the intake chamber, where the EGR and air-fuel mixture are allowed to mix, and the mixture is fed into the engine. The signal from the oxygen sensor or sensors is used as a parameter for the fuel rate and duration in the map of the control system or engine control module to meet target values of efficiency or emissions. The system and method could also be implemented in any type of fuel system such as blow through or draw through. This method provides higher accuracy and capacity to control the required air to fuel ratio required for robust performance in terms of efficiency or emissions.