Patent application number | Description | Published |
20080228337 | METHOD FOR OPERATING AN ENGINE CONTROL MODULE UNDER LOW VOLTAGE CONDITIONS - A fault clearing system and method for an engine control system includes a plurality of processor modules to control and monitor the engine and set a plurality of faults. The plurality of processor modules includes an electronic throttle control (ETC) module to control and monitor a throttle of the engine, and a plurality of engine sensors and ETC sensors. An ETC diagnostic module monitors the ETC sensors and engine sensors, with the ETC diagnostic module setting a low voltage induced fault. The ETC diagnostic module will also enter one of a plurality of low voltage states in response to the low voltage induced fault. The ETC diagnostic module selectively controls the ETC module and selectively clears the faults in the ETC module and plurality of processor modules upon entry into one of the low voltage states. | 09-18-2008 |
20080228366 | MODEL BASED VEHICLE OVERSPEED ALGORITHM - A system for limiting the speed of a vehicle includes a first module that generates a first torque signal based on a vehicle speed, a second module that generates a second torque signal based on a difference between a predetermined vehicle speed limit and the vehicle speed, and a third module that generates an output torque signal based on the first and second torque signals. The output torque signal is adapted to control the output torque of a motor. | 09-18-2008 |
20080229727 | NORMALIZING OXYGEN STORAGE CAPACITY(OSC) FOR CATALYST MONITORING - An oxygen storage capacity (OSC) monitoring system for a vehicle having a catalytic converter includes a control module that determines a measured OSC based on an inlet sensor signal (ISS) that is responsive to an oxygen content of exhaust flowing into the catalytic converter. The control module determines a normalization ratio based the measured OSC and determines a PASS/FAIL status of the catalytic converter based on the normalization ratio. | 09-25-2008 |
20080234103 | FUEL QUALITY INDICATION FOR ADAPTIVE TRANSMISSION CONTROL - A control system and method for adaptively controlling transmission ratio shifting in an electronically controlled transmission. A refueling event is detected. After the detected refueling event, fuel consumption is monitored for a predetermined period during which a change in composition of fuel to the engine reaches or approaches a steady state. During the period, the rate of adapting transmission shift controls is modified to respond quicker to the change in shift characteristics induced by differences in torque produced by the engine. Implementing this method can improve transmission shift quality while the quality of fuel reaching an engine is in transition. | 09-25-2008 |
20080243355 | FULL RANGE TORQUE REDUCTION - An engine control system comprises a torque request module, an immediate torque control module, an actuation module, and an expected torque control module. The torque request module generates an expected torque request and an immediate torque request. The immediate torque control module controls a spark advance of an engine based on the immediate torque request. The actuation module selectively reduces the expected torque request based on the immediate torque request and a spark capacity. The spark capacity is based on a difference between a first engine torque and a second engine torque, determined at a current airflow. The first engine torque is determined at a first spark advance and the second engine torque is determined at a second spark advance that is less than the first spark advance. The expected torque control module that controls a throttle valve area based on the expected torque request. | 10-02-2008 |
20090005216 | METHODS AND SYSTEMS TO FEEDBACK COORDINATED TORQUE CONTROL SYSTEM INFORMATION - An engine control system comprises a first torque request module that generates a first torque request, a second torque request module that generates a second torque request, a torque arbitration module, an arbitration feedback module, and a torque control module. The torque arbitration module selects one of the first and second torque requests and outputs an arbitrated torque based on the selected one of the first and second torque requests. The arbitration feedback module reports a status signal to the first torque request module. The status signal has a first value when the first torque request is the selected one of the first and second torque requests. The torque control module controls an engine to produce the arbitrated torque. The power source includes an internal combustion engine. | 01-01-2009 |
20090270225 | AIRFLOW BASED IDLE SPEED CONTROL POWER SECURITY - An engine control system comprises a torque determination module, a limit determination module, a torque limit module, and a torque control module. The torque determination module determines a desired torque based on a desired engine speed. The limit determination module determines a torque limit based on one of an engine oil temperature and a transmission fluid temperature. The torque limit module determines a final torque based on the desired torque and the torque limit. The torque control module selectively determines a throttle area based on the final torque. A throttle valve is actuated based on the throttle area. | 10-29-2009 |
20090287378 | DRAG TORQUE REQUEST SECURITY DIAGNOSTIC SYSTEMS AND METHODS - An engine control system for a vehicle comprises a torque module and a drag request evaluation module. The torque module controls torque output of an engine based on a driver torque request and increases the torque output based on a wheel drag torque request generated based on a driven wheel speed. The drag request evaluation module disables the increase of the torque output when the driven wheel speed is greater than an undriven wheel speed by more than a predetermined speed. | 11-19-2009 |
20090299602 | ENGINE TORQUE RESERVE SYSTEM DIAGNOSTIC SYSTEMS AND METHODS - An engine control system of a vehicle comprises a reserves module and a fault diagnostic module. The reserves module controls airflow into an engine based on a driver torque request, increases the airflow into the engine when a reserve torque request is received, and outputs a torque output command for the engine based on the driver torque request. The fault diagnostic module selectively diagnoses a fault in the reserves module when the torque output command is greater than a sum of the driver torque request, a predetermined torque, and a load applied to the engine. | 12-03-2009 |
20100075803 | SECURING THROTTLE AREA IN A COORDINATED TORQUE CONTROL SYSTEM - An engine system includes a throttle actuator module and a torque control module. The throttle actuator module controls a throttle actuator based on a desired throttle area. The torque control module determines an actuator torque. The torque control module determines a rate limited torque, a maximum torque, and a minimum torque based on the actuator torque and a predetermined rate of change. The torque control module determines the desired throttle area based on the actuator torque when the rate limited torque is greater than the maximum torque. The torque control module determines the desired throttle area based on the actuator torque when the rate limited torque is less than the minimum torque. | 03-25-2010 |
20100242933 | POST OXYGEN SENSOR PERFORMANCE DIAGNOSTIC WITH MINIMUM AIR FLOW - An engine control system includes an oxygen (O | 09-30-2010 |
20100280738 | METHOD AND SYSTEM FOR CONTROLLING TORQUE DURING A VEHICLE LAUNCH CONDITION - A method and control module for controlling an engine includes a requested torque module that generates a requested torque and a maximum toque capacity module that determines a maximum torque capacity corresponding to a maximum torque capacity of the engine. A launch trim torque threshold determination module determines a launch trim torque threshold. A comparison module that compares the requested torque and the launch trim torque threshold. An output module that applies a fast rate limit to the requested torque up to the launch trim threshold when the requested torque is less than the launch trim torque threshold and a shower rate limited torque request when the requested torque is greater than the launch trim torque threshold. | 11-04-2010 |
20110060487 | NEGATIVE WHEEL SLIP CONTROL SYSTEMS AND METHODS - An engine control system comprises a derivative module and a slip remediation module. The derivative module determines a mathematical derivative of a driven wheel speed of a vehicle. The slip remediation module, when the mathematical derivative is more negative than a predetermined deceleration, at least one of disables regenerative braking being performed by one or more electric motors, increases an axle torque request, and unlocks a torque converter. | 03-10-2011 |
20110132324 | LINEAR TRANFORMATION ENGINE TORQUE CONTROL SYSTEMS AND METHODS FOR INCREASING TORQUE REQUESTS - A method of operating an engine of a vehicle includes generating a first torque request. The method includes generating a second torque request that is greater than and based on the first torque request, increasing a torque output of the engine based on the second torque request at a first rate and during a first period, and increasing the torque output of the engine based on the first torque request at a second rate and during a second period. The first period is distinct from and before the second period, and the first rate is greater than the second rate. | 06-09-2011 |
20120029742 | HYBRID POWERTRAIN WITH ELECTRONIC THROTTLE AND METHOD OF CONTROLLING THROTTLE POSITION - A hybrid powertrain and a method of controlling a throttle in an engine of the hybrid powertrain are provided. A throttle system has a throttle at an optimal position for the engine to power a first motor/generator when an electric throttle motor is de-energized to minimize current consumption by the throttle motor. The electric throttle motor is energizable to adjust the position of the throttle. A biasing member biases the throttle to a default position when the electric throttle motor is not energized. The hybrid powertrain has a first motor/generator operatively connected to the engine, and a second motor/generator operatively connected to the generator and operable for providing output power. The engine is operable in a predetermined optimal state to provide power to the generator for powering the first motor/generator. The throttle is at a predetermined position when the engine is in the predetermined optimal state. | 02-02-2012 |
20120130609 | TORQUE CONTROL SYSTEM AND METHOD FOR SHIFT ASSIST - A control system includes a shift detection module, a request generation module, and a request setting module. The shift detection module detects when a transmission is executing a shift. The request generation module generates a transmission torque request to cause an engine to increase a transmission input shaft speed to a desired speed at a desired gear ratio when the transmission is executing the shift. The request setting module selectively sets the transmission torque request equal to a default torque request when the transmission torque request is greater than a first torque and the engine is coupled to a drive wheel. | 05-24-2012 |
20120173046 | SYSTEM AND METHOD FOR DECREASING VEHICLE SPEED FROM A REMOTE LOCATION - A control system for a vehicle includes a communication module and a vehicle stop module. The communication module receives a command from a vehicle services provider (VSP) to decrease a speed of the vehicle to a desired speed, wherein the VSP is located remotely with respect to the vehicle. In response to the received command, the vehicle stop module decreases the speed of the vehicle to the desired speed by controlling at least one of a transmission, an electronic parking brake, and electronically assisted brakes. | 07-05-2012 |
20120221224 | PRE-THROTTLE PRESSURE CONTROL SYSTEMS AND METHODS - A system for a vehicle includes a desired mass air flowrate (MAF) module and a desired effective area module. The desired MAF module generates a desired MAF through a throttle valve of an engine based on an engine torque request. The desired effective area module generates a desired effective area of the throttle valve based on a throttle inlet air pressure (TIAP) and the desired MAF. A throttle actuator module adjusts opening of the throttle valve based on the desired effective area. | 08-30-2012 |
20130080023 | SYSTEM AND METHOD FOR SECURING ENGINE TORQUE REQUESTS - A control system for an engine includes an engine torque request module, an engine torque response module, a torque command limit module, and an actuation module. The engine torque request module determines an engine torque request based on (i) an engine power request and (ii) a desired engine speed (DRPM). The engine torque response module determines first and second torque values based on (i) an engine torque response model and (ii) first and second torque boundaries, wherein the first and second torque boundaries are based on the DRPM and a measured engine speed (RPM). The torque command limit module generates a secured engine torque request based on (i) the engine torque request and (ii) the first and second torque values. The actuation module controls at least one actuator of the engine based on the secured engine torque request. | 03-28-2013 |
20130096797 | METHOD OF CONTROLLING VEHICLE WHEEL AXLE TORQUE AND CONTROL SYSTEM FOR SAME - A method of controlling torque on a vehicle wheel axle includes comparing a torque intervention request to a predetermined minimum axle torque for a current vehicle speed and a current direction of motion of the vehicle. The predetermined minimum axle torque decreases as vehicle speed in an operator-selected direction of motion increases. An arbitrated axle torque is calculated based on an operator-requested torque, the current vehicle speed, the current direction of motion, and the greater of the torque intervention request and the predetermined minimum torque. Axle torque is applied to the vehicle's wheel axle based at least partially on the arbitrated axle torque. | 04-18-2013 |
20150039190 | SYSTEM AND METHOD FOR CONTROLLING THE AMOUNT OF TORQUE PROVIDED TO WHEELS OF A VEHICLE TO IMPROVE DRIVABILITY - A system according to the principles of the present disclosure includes an axle torque determination module, an engine torque determination module, and an engine torque control module. The axle torque determination module determines an axle torque request based on a driver input and a vehicle speed. The engine torque determination module determines an engine torque request based on the axle torque request and at least one of a turbine speed and whether a clutch of a torque converter is applied. The engine torque control module controls an amount of torque produced by an engine based on the engine torque request. | 02-05-2015 |
20150039193 | SYSTEM AND METHOD FOR CONTROLLING THE AMOUNT OF TORQUE PROVIDED TO WHEELS OF A VEHICLE TO PREVENT UNINTENDED ACCELERATION - A system according to the principles of the present disclosure includes an axle torque determination module, an engine torque determination module, a torque security module, and an engine torque control module. The axle torque determination module determines an axle torque request based on a driver input and a vehicle speed. The engine torque determination module determines an engine torque request based on the axle torque request and at least one of a first turbine speed and whether a clutch of a torque converter is applied. The torque security module determines a secured torque request based on at least one of the driver input, the vehicle speed, and an engine speed. The engine torque control module controls an amount of torque produced by an engine based on one of the engine torque request and the secured torque request. | 02-05-2015 |