Patent application number | Description | Published |
20090056672 | AIRFLOW-BASED CRANK THROTTLE CONTROL IN A TORQUE-BASED SYSTEM - A method of torque-based control for an internal combustion engine may include determining a desired airflow rate into an intake manifold of the internal combustion engine during an engine start condition, determining a torque limit for a torque-based engine control module based on the desired airflow rate, and regulating engine torque based on the determined torque limit. | 03-05-2009 |
20090216425 | CONTROL SYSTEM AND METHOD FOR STARTING AN ENGINE WITH PORT FUEL INJECTION AND A VARIABLE PRESSURE FUEL SYSTEM - A fuel control system includes a pressure comparison module that generates a pressure control signal when a fuel supply pressure is greater than a predetermined pressure value, a temperature comparison module that generates a temperature control signal when a temperature of an engine is greater than a predetermined temperature value, and a pre-crank fuel module that selectively dispenses pre-crank fuel prior to cranking the engine based on the pressure control signal and the temperature control signal. A related fuel control method is also provided. | 08-27-2009 |
20090299586 | METHOD TO AUTOSTART AN INTERNAL COMBUSTION ENGINE IN A HYBRID POWERTRAIN SYSTEM - Internal combustion engine autostarting includes selecting from among several autostart processes in accordance with desired input torque from the engine to the transmission, cranking the engine, and fueling the engine during the engine cranking based upon the selected engine autostart process. | 12-03-2009 |
20100058848 | ENGINE COOLANT TEMPERATURE ESTIMATION SYSTEM - An engine coolant temperature estimation system comprises a coolant temperature estimation module and a coolant monitoring module. The coolant estimation module estimates an engine coolant temperature based on at least one of a mass air flow, a vehicle speed, and an ambient temperature. The coolant monitoring module selectively operates an engine based on the estimated engine coolant temperature. | 03-11-2010 |
20100075802 | COLD START EMISSION REDUCTION STRATEGY FOR COORDINATED TORQUE CONTROL SYSTEMS - A cold-start control system for an internal combustion engine includes a heat estimation module, a torque request module and a propulsion torque determination module. The heat estimation module determines an exhaust system temperature and estimates heat required to heat an exhaust system to a predetermined temperature. The torque request module generates a torque request based on the estimated heat. The propulsion torque determination module determines a desired engine torque based on the torque request. | 03-25-2010 |
20100107630 | Exhaust temperature and pressure modeling systems and methods - An exhaust control system for a vehicle comprises an exhaust system modeling module and an actuator control module. The exhaust system modeling module estimates an input gas temperature, an output gas temperature, a mass temperature, and a pressure for an exhaust system component of an exhaust system implemented in the vehicle. Exhaust gas flows through the exhaust system component. The actuator control module selectively adjusts an engine operating parameter based on at least one of the input gas temperature, the output gas temperature, the mass temperature, and the pressure. | 05-06-2010 |
20100191445 | INDIVIDUAL CYLINDER FUEL MASS CORRECTION FACTOR FOR HIGH DRIVABILITY INDEX (HIDI) FUEL - A system includes a fuel detection module, a misfire detection module, and a fuel control module. The fuel detection module detects when a fuel supplied to an engine having C cylinders has a high drivability index (HIDI), where C is an integer greater than 1. The misfire detection module detects whether M of the C cylinders misfire when the fuel has the HIDI, where M is an integer, and 1≦M07-29-2010 | |
20100242582 | SYSTEMS AND METHODS FOR ENGINE FUEL CONTROL - An engine system includes a status determination module and an open-loop fuel control module. The status determination module determines whether a first ignition fuse is in a failure state. The open-loop fuel control module disables a first plurality of fuel injectors and actuates a second plurality of fuel injectors based on a first air/fuel (A/F) ratio when the first ignition fuse is in the failure state, wherein the first ignition fuse and the first plurality of fuel injectors correspond to a first cylinder bank, and wherein a second ignition fuse and the second plurality of fuel injectors correspond to a second cylinder bank. | 09-30-2010 |
20100269793 | DIAGNOSTIC SYSTEM FOR SPARK IGNITION DIRECT INJECTION SYSTEM CONTROL CIRCUITS - An engine control system includes a driver module and a diagnostics module. The driver module includes a high-side driver and a low-side driver, which selectively actuate a load. The driver module generates status signals based on detection of each of a plurality of failure modes of the high-side and low-side drivers. The diagnostics module increments a first error count for a first mode of the plurality of failure modes when the status signals indicate the driver module has detected the first mode. The diagnostics module increments a corresponding total count each time the driver module analyzes the first mode. The diagnostics module sets a fail state for a diagnostic trouble code (DTC) when the first error count for the first mode reaches a first predetermined threshold prior to the total count reaching a second predetermined threshold. | 10-28-2010 |
20100280741 | FUEL PRESSURE SENSOR PERFORMANCE DIAGNOSTIC SYSTEMS AND METHODS BASED ON HYDRODYNAMICS OF INJECTON - An engine control system comprises a model pressure determination module and a sensor diagnostic module. The model pressure determination module determines a modeled fuel rail pressure based on an injection duration of a fuel injector and a desired fuel mass injected by the fuel injector. The sensor diagnostic module generates a status of a fuel rail pressure sensor based on a comparison of the modeled fuel rail pressure and a sensed fuel rail pressure. | 11-04-2010 |
20100280742 | CONTROL SYSTEM AND METHOD FOR CONTROLLING AN ENGINE IN RESPONSE TO DETECTING AN OUT OF RANGE PRESSURE SIGNAL - A method and control module for operating an engine that includes a pressure range determination module that determines a pressure value for a pressure sensor in a fuel rail is out of range. A fuel rail pressure estimate module that determines a predicted pressure value. An engine control module that operates the engine using the predicted pressure value. | 11-04-2010 |
20100288231 | CONTROL SYSTEMS AND METHODS FOR NEWLY ASSEMBLED ENGINES - An engine control system for a vehicle comprises a combustion control module and an engine startup module. The combustion control module selectively controls a spark timing and airflow into an engine based on a counter value. The engine startup module, when the counter value is one of greater than and less than a predetermined final value, controls an equivalence ratio (EQR) of an air/fuel mixture provided to the engine during an engine cranking period based on a fuel rail pressure and controls the EQR during an engine running period based on the fuel rail pressure and an engine runtime period. The counter value is set to the predetermined final value after the engine is started for a first time after the engine is assembled. | 11-18-2010 |
20100288235 | ENGINE STARTUP FUEL PRESSURE CONTROL SYSTEMS AND METHODS - A fuel pressure control system for a vehicle comprises a pressure regulator module and a pressure increasing module. The pressure regulator module regulates a fuel pressure supplied to an engine to a first predetermined pressure during an engine running period. The pressure increasing module selectively increases the fuel pressure to a second predetermined pressure during the engine running period when a counter value is one of greater than and less than a predetermined final value. The second predetermined pressure is greater than the first predetermined pressure, and the counter value is set to the predetermined final value after the engine is started for a first time after being assembled. | 11-18-2010 |
20100294030 | FUEL SYSTEM DIAGNOSTIC SYSTEMS AND METHODS - A diagnostic system comprises a monitoring module and a diagnostic module. The monitoring module receives a first rail pressure measured by a high side rail pressure sensor during engine cranking at a location where fuel is pressurized by a high pressure fuel pump. The diagnostic module selectively diagnoses a fault in at least one of the high pressure fuel pump and the high side rail pressure sensor when the first rail pressure is less than a predetermined pressure and rail pressures received during a predetermined period after the first rail pressure is received are less than the predetermined pressure. | 11-25-2010 |
20100326413 | SYSTEM AND METHOD FOR PROTECTING ENGINE FUEL PUMPS - A fuel control system for an internal combustion engine includes a fuel starvation detection module and a fuel pump protection module. The fuel starvation detection module detects when a fuel pump is delivering less than a predetermined amount of fuel based on a fuel level in a fuel tank, a fuel pressure in the fuel pump, and an air/fuel (A/F) ratio of the engine. The fuel pump protection module decreases an amount of fuel supplied to the engine during a period after detecting that the fuel pump is delivering less than the predetermined amount of fuel. | 12-30-2010 |
20120024252 | SYSTEM AND METHOD FOR STARTING AN ENGINE USING LOW ELECTRIC POWER - A method and a system are provided for starting an engine that is employed for propulsion of a vehicle. The method includes determining that an engine start via a starter is desired, wherein the starter is powered by an energy storage device. The method also includes determining a state of charge of the energy storage device. The method additionally includes commanding the starter to crank the engine at a first predetermined speed, if the energy storage device is at or above a predetermined state of charge and supplying fuel to the engine for a first predetermined number of fueling events. Furthermore, the method includes commanding the starter to crank the engine at a second predetermined speed that is lower than the first predetermined speed and supplying fuel to the engine for a second predetermined number of fueling events, if the energy storage device is below the predetermined state of charge. | 02-02-2012 |
20130186065 | SULFUR ACCUMULATION MONITORING SYSTEMS AND METHODS - A system for a vehicle includes a change determination module, a sulfur determination module, and a final equivalence ratio (EQR) module. The change determination module estimates a change in an amount of sulfur within a catalyst of an exhaust system of the vehicle. The sulfur determination module estimates the amount of sulfur within the catalyst based on the change. The final EQR module selectively adjusts fueling of an engine based on the amount of sulfur. | 07-25-2013 |
20140278001 | SYSTEM AND METHOD FOR CONTROLLING AN OPERATING FREQUENCY OF A PURGE VALVE TO IMPROVE FUEL DISTRIBUTION TO CYLINDERS OF AN ENGINE - A system according to the principles of the present disclosure includes an engine speed module and a valve control module. The engine speed module determines a speed of an engine based on a position of a crankshaft. The valve control module selectively adjusts an operating frequency of a purge valve based on the engine speed. | 09-18-2014 |