Patent application number | Description | Published |
20100250089 | METHOD AND SYSTEM FOR GENERATING A DIAGNOSTIC SIGNAL OF AN ENGINE COMPONENT USING AN IN-CYLINDER PRESSURE SENSOR - A method and a control module for diagnosing an engine component function includes a comparison module comparing an in-cylinder pressure signal to a threshold and a fault indication module generating a diagnostic signal for an engine component in response to comparing. | 09-30-2010 |
20100275877 | SYSTEM AND METHOD FOR CONTROLLING TRANSIENT SWITCHING BETWEEN HCCI MODE AND SI MODE OF AN ENGINE - A control system and method for operating an engine includes an HCCI mode control module operating an engine in a homogeneous charge compression (HCCI) mode. The control system also includes a difference module determining an actual difference between a desired torque amount and a spark ignition (SI) threshold. An SI mode control module operates the engine in a SI state when the actual difference is above a threshold band. A HCCI mode control module operates the engine in the HCCI mode for a predetermined time when the actual difference is within the torque threshold band. The HCCI mode control module operates the engine in the HCCI mode when the actual difference is below the torque threshold band. | 11-04-2010 |
20100292909 | INJECTION ADVANCEMENT FOR PISTON COOLING IN SPARK IGNITION DIRECT INJECTION ENGINES - An engine system comprises a temperature determination module, a temperature comparison module, and a fuel injection control module. The temperature determination module determines an engine temperature. The temperature comparison module compares the engine temperature and a temperature threshold. The fuel injection control module adjusts a timing of fuel injection from a first range of an intake stroke to a second range of the intake stroke based on the comparison. The first range and the second range do not overlap. | 11-18-2010 |
20110016850 | SYSTEM AND METHOD FOR CONTROLLING A CATALYST TEMPERATURE IN AN HCCI COMBUSTION ENGINE - A method and system for controlling an engine includes a homogenous charge compression ignition (HCCI) mode control module that operates an engine in HCCI mode and a condition monitor module that monitors operating conditions of the engine. The control module also includes a condition predictor module that generates a first predicted condition of a catalyst in response to the operating conditions of the engine. A comparison module compares the first predicted condition to a first threshold. A spark injection mode control module operates the engine in a spark injection mode in response to comparing. | 01-27-2011 |
20110029216 | DIAGNOSTIC SYSTEMS AND METHODS FOR SENSORS IN HOMOGENOUS CHARGE COMPRESSION IGINTION ENGINE SYSTEMS - An engine control system for a homogenous charge compression ignition (HCCI) engine includes an airflow determination module and a sensor diagnostic module. The airflow determination module generates a first plurality of estimates of airflow into the HCCI engine when the HCCI engine is operating in a first combustion mode, wherein the first plurality of estimates are based on an intake manifold absolute pressure (MAP), a mass air flow (MAF) rate, and a camshaft position. The sensor diagnostic module determines a state of at least one of a first plurality of sensors based on a predetermined threshold and differences between one of the first plurality of estimates and others of the first plurality of estimates, wherein the first plurality of sensors includes a MAP sensor, a MAF sensor, and a camshaft sensor. | 02-03-2011 |
20110079193 | DIAGNOSTIC SYSTEMS AND METHODS FOR FUEL INJECTORS IN HOMOGENOUS CHARGE COMPRESSION IGNITION ENGINE SYSTEMS - An engine control system for a homogenous charge compression ignition (HCCI) engine includes a fuel injector temperature determination module and a fuel injector control module. The fuel injector temperature determination module determines a temperature of a tip of a fuel injector based on a first temperature model when the HCCI engine is operating in an HCCI combustion mode, and determines the temperature of the tip of the fuel injector based on a second temperature model when the HCCI engine is operating in a spark ignition (SI) combustion mode. The fuel injector control module controls a fuel injector pulse width based on the determined temperature and a predetermined temperature threshold, wherein the fuel injector pulse width increases when the determined temperature is greater than the predetermined temperature threshold. | 04-07-2011 |
20110106392 | METHOD AND SYSTEM FOR DETECTING A FAULT DURING CATALYST LIGHT-OFF - A system and method for controlling engine operation includes a timer module that determines a time period from when a catalyst light-off mode is entered to when an oxygen sensor signal reaches an oxygen sensor threshold and a comparison module that generates an error signal and determines when the time period is above a time threshold. | 05-05-2011 |
20110132317 | SYSTEMS AND METHODS FOR HEATING INTAKE AIR DURING COLD HCCI OPERATION - A system for controlling intake airflow of an engine includes a mode determination module, a throttle valve control module, and a valve actuation module. The mode determination module generates a mode signal based on an engine speed signal and an engine load signal. The mode signal indicates one of a spark ignition mode and a homogeneous charge compression ignition mode. The throttle valve control module generates a valve control signal based on the mode signal, a temperature signal, and a plurality of valve position signals that indicate positions of first and second throttle valves. The throttle valve control module controls the positions of the first and second throttle valves to regulate flow rates of intake air into an intake manifold of the engine via a heat exchanger based on the valve control signal. The valve actuation module actuates the first and second throttle valves based on the valve control signal. | 06-09-2011 |
20110238280 | SYSTEM AND METHOD FOR ESTIMATING TORQUE OUTPUT OF A HOMOGENEOUS CHARGE COMPRESSION IGNITION ENGINE - A control system for a homogeneous charge compression ignition (HCCI) engine includes a fuel requirement estimation module, a torque estimation module, and a torque control module. The fuel requirement estimation module estimates a fuel requirement of the HCCI engine based on a desired indicated mean effective pressure (IMEP) of cylinders in the HCCI engine. The torque estimation module estimates a torque output of the HCCI engine based on the estimated fuel requirement. The torque control module adjusts the torque output of the HCCI engine based on the estimated torque output and a desired torque output. | 09-29-2011 |
20110295488 | CONTROL SYSTEM AND METHOD FOR LOW QUANTITY FUEL INJECTION - A control system for an engine includes a parameter determination module and a period determination module. The parameter determination module determines a first fuel injection parameter based on a rate of change of a quantity of fuel injected during a period, and determines a second fuel injection parameter based on an initial quantity of fuel injected during the period. The period determination module determines a desired fuel injection period based on a desired fuel injection quantity, the first and second fuel injection parameters, and at least one of mass air flow (MAF) rate, intake air temperature (IAT), fuel injector pressure (FIP), engine coolant temperature (ECT), and exhaust gas air/fuel (A/F) ratio. | 12-01-2011 |
20120080009 | SYSTEM AND METHOD FOR CONTROLLING FUEL INJECTION TIMING TO DECREASE EMISSIONS DURING TRANSIENT ENGINE OPERATION - A control system for an engine includes an injection timing adjustment module and an injection control module. The injection timing adjustment module generates an adjusted fuel injection timing when a fuel request is received and the engine is operating in a transient state, wherein the adjusted fuel injection timing is based on a base fuel injection timing, an elapsed time since the fuel request, and at least one of a plurality of engine operating parameters. The injection control module controls fuel injection based on the adjusted fuel injection timing for a period, and controls fuel injection based on the base fuel injection timing after the period. | 04-05-2012 |
20120180763 | MULTIPLE FUEL INJECTION SYSTEMS AND METHODS - A desired pulse width module determines a desired length of a single pulse of fuel for a combustion cycle of a cylinder of an engine. A multiple pulses module determines a number of pulses (N) for the combustion cycle, wherein N is an integer greater than 1. A fraction determination module determines N fractional values for the N pulses, respectively. An injector control module generates individual lengths for the N pulses based on the N fractional values, respectively, and based on the desired length. A fuel actuator module opens a fuel injector that injects fuel into the cylinder during the combustion cycle in N pulses having the individual lengths, respectively. | 07-19-2012 |
20120185151 | SYSTEM AND METHOD FOR CONTROLLING FUEL INJECTION TO DECREASE PARTICULATE EMISSIONS DURING TRANSIENT ENGINE OPERATION - A control system for an engine includes a transient operation detection module, an injection determination module, and an injection control module. The transient operation detection module detects whether the engine is operating in a transient state. The injection determination module, based on an elapsed time since a fuel request and at least one of a plurality of engine operating parameters, at least one of (i) increases a number of fuel injections per combustion cycle to N, and (ii) adjusts periods for each of the fuel injections, wherein N is an integer greater than or equal to two. The injection control module controls fuel injection during the transient state based on at least one of (i) N fuel injections per combustion cycle and (ii) the adjusted periods. | 07-19-2012 |
20120185152 | FUEL RAIL PRESSURE CONTROL SYSTEMS AND METHODS - A fuel control system includes a target rail pressure module. The target rail pressure module determines a target fuel rail pressure of a fuel rail of a direct injection engine. An offset module determines an offset value based on an engine speed of the direct injection engine and at least one of an engine load and an air per cylinder. A modifier module determines a modifier value based on a temperature of the direct injection engine. A rail pressure control module adjusts a current fuel rail pressure of the fuel rail based on the target fuel rail pressure, the offset value and the modifier value. | 07-19-2012 |
20120285142 | SYSTEM AND METHOD FOR CONTROLLING FUEL DELIVERY BASED ON OUTPUT FROM A POST-CATALYST OXYGEN SENSOR DURING CATALYST LIGHT-OFF - A system includes a voltage determination module and a fuel control module. The voltage determination module determines a first output voltage of a first oxygen sensor position upstream from a catalyst in an exhaust system of an engine, and determines a second output voltage from a second oxygen sensor positioned downstream from the catalyst, the first output voltage indicating a first oxygen level of exhaust upstream from the catalyst, the second output voltage indicating a second oxygen level of exhaust downstream from the catalyst. The fuel control module controls a fuel mass injected into the engine based on the first output voltage and the second output voltage when a temperature of the catalyst is greater than a light-off temperature, and controls the fuel mass based on the second output voltage and independent from the first output voltage when the catalyst temperature is less than light-off temperature. | 11-15-2012 |
20140000564 | FUEL INJECTOR CLOSING TIMING ADJUSTMENT SYSTEMS AND METHODS | 01-02-2014 |
20140074381 | SYSTEM AND METHOD FOR CONTROLLING FUEL INJECTION IN AN ENGINE BASED ON PISTON TEMPERATURE - A system according to the principles of the present disclosure includes a temperature estimation module and a fuel control module. The temperature estimation module estimates a piston temperature associated with a cylinder based on engine operating conditions. The fuel control module controls at least one of injection timing associated with the cylinder, injection pressure associated with a cylinder, injection location associated with a cylinder, and a number of injections per engine cycle associated with the cylinder based on the piston temperature. | 03-13-2014 |
20140121944 | FUEL CONTROL SYSTEMS AND METHODS FOR COLD STARTS OF AN ENGINE - A control system includes a starter control module, a mode setting module, a fuel pressure control module, and a fuel control module. The starter control module initiates cranking of a spark ignition direct injection (SIDI) engine in response to user actuation of an ignition switch. The mode setting module sets a mode of operation to a cold start mode when an engine coolant temperature is less than a predetermined temperature during the cranking. The fuel pressure control module, in response to the setting of the mode to the cold start mode, determines a target fuel rail pressure. The fuel control module controls fueling during the cranking based on the target fuel rail pressure. | 05-01-2014 |