Patent application number | Description | Published |
20130160432 | LIMITING NOX EMISSIONS - Apparatus for controlling an internal combustion engine limits emission of undesirable compounds of nitrogen and oxygen and provides increased transient power. | 06-27-2013 |
20130192569 | OXYGEN CONCENTRATION SETPOINT MODIFICATION - A method of controlling exhaust gas recirculation in an engine is provided. An amount of oxygen in an exhaust of an engine is measured. A desired intake manifold oxygen concentration is obtained. An exhaust gas recirculation rate to provide the desired intake manifold oxygen concentration is calculated based on the measured amount of oxygen in the exhaust. An exhaust gas recirculation valve is set based on the calculated exhaust gas recirculation rate. | 08-01-2013 |
20130195614 | TURBOCHARGER CONTROL - A method of controlling a variable geometry turbocharger is provided. A predefined desired boost pressure of a turbocharger is obtained from a memory. A predefined desired mass flow rate in an intake manifold of an engine is obtained from the memory. A theoretical amount of power required by the turbocharger to generate the desired boost pressure and the desired mass flow rate is calculated. An actual mass flow rate in the intake manifold is determined. An actual amount of power required by the turbocharger to generate the desired boost pressure and the actual mass flow rate is calculated. At least one adjustable vane of the turbine of the turbocharger is adjusted to allow the theoretical amount of power required of the turbocharger to generally equal the actual amount of power by adjusting the boost pressure. | 08-01-2013 |
20130197778 | SOOT ACCUMULATION MODEL FOR SETPOINT MODIFICATION - A method controlling operation of an engine utilizing a number of preset operating parameters is provided. An operating mode of the engine is determined. An operating state of the engine is determined. A first plurality of engine parameter settings are retrieved from a memory in response to the determined operating mode and the determined operating state of the engine. The first plurality of engine parameter settings are applied to at least one control algorithm of the engine. A rate of soot accumulation from the engine is monitored. The rate of soot accumulation is compared to a predetermined soot accumulation rate threshold. A second plurality of engine parameter settings are retrieved from a memory in response to the monitored rate of soot accumulation exceeding the predetermined soot accumulation rate threshold. | 08-01-2013 |
20130197779 | Setpoint Bank Control Architecture - A method of controlling operation of an engine is provided that utilizes a number of preset operating parameters. The method determines an operating mode of the engine. The method determines an operating state of the engine. A plurality of engine parameter settings is retrieved from a memory in response to the determined operating mode and the determined operating state of the engine. The plurality of engine parameter settings are applied to at least one control algorithm of the engine. | 08-01-2013 |
20130197785 | NOX CONTROL - A method of controlling an engine based upon airflow is provided. A request for a desired torque output of the engine is received. A first amount of fuel required to generate the desired torque is retrieving from a memory. An amount of airflow required to combust the fuel required to generate the desired torque at a predefined air/fuel ratio is calculated. A first amount of EGR required to produce a predefined amount of NOx emissions is calculated. The amount of airflow required to the first amount of EGR required is added. The total of the airflow and the first amount of EGR are compared to a volume available in a cylinder. At least one of the first amount of fuel delivered and the first amount of EGR provided is modified when the total of the airflow and the EGR exceeds the total volume available in the cylinder. | 08-01-2013 |