Abstract: An aftertreatment system of an internal combustion engine is disclosed. The aftertreatment system includes in a sequence along the exhaust pipe, a lean NOx trap and a particulate filter. An air/fuel ratio sensor is located upstream of the lean NOx trap and downstream of the turbine outlet to determine the air/fuel ratio during a regeneration process (DeNOx) in the lean NOx trap. A NOx sensor is located downstream of the lean NOx trap or downstream of the particulate filter, to determine NOx in the exhaust pipe. A turbine temperature is determined in accordance with a first means, and a temperature during a desulphation process (DeSOx) in the lean NOx trap is determined in accordance with a second means. At least one of the first and second means for determining a temperature may be a temperature sensor.
Abstract: A vehicle includes an engine, a transmission, and an electrical system. The electrical system has an auxiliary starter motor connected to a crankshaft of the engine, a high-voltage motor generator unit (MGU) connected to the crankshaft, and a controller. Execution of instructions by a processor causes the controller to determine a set of powertrain conditions in response to a requested autostart of the engine, e.g., state of charge and/or power limits of a high-voltage energy storage system (HV-ESS), torque limits of the MGU, and/or a crank angle of the engine. The controller determines whether the requested autostart may not succeed relative to a time or noise standard using the set of powertrain conditions, and transmits an autostart command to the MGU when the requested autostart may succeed. The controller transmits the autostart command to the auxiliary starter motor when the requested autostart will not succeed.
Abstract: A vehicle automates a driver action by controlling vehicle systems according to a rule. The rule includes a trigger event and an automated action. Rules are created or added for use by a vehicle using applications including user-defined rule applications, automatic rule applications, and network applications.
Abstract: A timing drive is disclosed for coupling the crankshaft to the first camshaft of an internal combustion engine. The timing drive includes a first mechanical transmission coupling the engine crankshaft to an intermediate shaft located in a cylinder block, and a second mechanical transmission coupling the intermediate shaft to the first camshaft. A second camshaft may be operably coupled to the first camshaft through a mechanical transmission coupling.
Abstract: A sulfur based active material has a core-shell structure including a hollow core and a porous carbon shell surrounding the hollow core. Sulfur is present in a portion of the hollow core. A polymer shell coating is formed on the porous carbon shell. The polymer shell coating includes nitrogen atoms that bond to carbon atoms of the porous carbon shell so that the porous carbon shell is a nitrogen-confused porous carbon shell.
Abstract: A power transfer unit assembly transfers torque from a powertrain to a propeller shaft. The power transfer unit assembly includes an input shaft, a transfer shaft, and a disconnect mechanism disposed between the input shaft and the transfer shaft. The transfer shaft is meshingly engaged with the driven member. The input shaft is selectively rotatably driven by the powertrain about a first axis of rotation and the drive member is selectively rotatably driven by the powertrain about a second axis of rotation. The disconnect mechanism is selectively engaged and disengaged. When the disconnect mechanism is engaged, torque is transferred from the input shaft to the driven member, via the transfer shaft. When the disconnect mechanism is disengaged, the input shaft is disconnected from the transfer shaft such that torque is not transferred from the input shaft to the driven member.
Abstract: Propulsion systems for vehicles are provided. The propulsion system includes an engine and a module. The module includes a fuel pump, a check valve, and a relief valve. The fuel pump is configured to supply fuel flow having a pressure. The check valve is configured to receive the fuel flow from the fuel pump, and to allow passage of the fuel flow to the engine. The relief valve is coupled to the fuel pump and configured to release a portion of the pressure of the fuel flow. The relief valve is disposed upstream of the check valve.
Type:
Grant
Filed:
August 31, 2011
Date of Patent:
August 4, 2015
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS. LLC
Inventors:
William L. Villaire, Ryan A. Buccafurri, Peter N. C. Nguyen, Gordon G. Rinke
Abstract: A monitoring module selectively generates a request to at least one of: transition from providing rich fueling an engine to operating the engine in a fuel cutoff (FCO) state; and transition from operating the engine in the FCO state to providing rich fueling to the engine. In response to a response to the request, the monitoring module: selectively controls fueling to the engine to perform the at least one of the transitions; and selectively determines whether a fault is present in a component based on a response to the at least one of the transitions. A hybrid control module controls an electric motor of the hybrid vehicle and that selectively generates the response.
Type:
Grant
Filed:
March 5, 2012
Date of Patent:
August 4, 2015
Assignee:
GM Global Technology Operations LLC
Inventors:
Christopher E. Whitney, Anthony H. Heap, John W. Siekkinen, Michael John Dokter, Stephen Paul Levijoki
Abstract: A system and method of controlling a clutch fill command based on the hydraulic state of an oncoming clutch is provided. A vehicle includes a hydraulically-actuated oncoming clutch that is configured to engage during a shift event from one operating mode of the vehicle to another. A controller is configured to generate a clutch fill command at an initial time such that completion of the clutch fill command is synchronized with an identified speed profile of the oncoming clutch. The oncoming clutch defines a real-time hydraulic state when the clutch fill command is generated. The controller is configured to generate a real-time acceptable speed margin for the oncoming clutch based at least partially on the real-time hydraulic state of the oncoming clutch. The controller is configured to cancel the clutch fill command if a real-time speed of the oncoming clutch is outside the generated real-time acceptable speed margin.
Type:
Grant
Filed:
August 9, 2012
Date of Patent:
August 4, 2015
Assignee:
GM Global Technology Operations LLC
Inventors:
Lawrence A. Kaminsky, Jy-Jen F. Sah, Besim Demirovic, Pinaki Gupta
Abstract: A method for message loss prevention in a CAN system. The CAN system includes a plurality of distributed nodes, such as electronic control unit nodes that communicate with each other through a CAN bus. The distributed nodes are categorized into a first type node or a second type node. Further, each distributed node has its own task period which is the time taken by a node to complete a task allocated to it. First, a synchronization frequency is determined. Synchronization frames are sent to the second type node by the first type node at the synchronization frequency. Hereafter, task activation synchronization is performed on the second type node based on information included in the synchronization frames where the task activation synchronization is performed by adjusting the task period of the second type node.
Abstract: A method for prioritizing potential threats identified by vehicle active safety systems. The method includes providing context information including map information, vehicle position information, traffic assessment information, road condition information, weather condition information, and vehicle state information. The method calculates a system context value for each active safety system using the context information. Each active safety system provides a system threat level value, a system braking value, a system steering value, and a system throttle value. The method calculates an overall threat level value using all of the system context values and all of the system threat level values. The method then provides a braking request value to vehicle brakes based on all of the system braking values, a throttle request value to a vehicle throttle based on all of the system throttle values, and a steering request value to vehicle steering based on all of the system steering values.
Abstract: A system and method for breaking-in and humidifying membrane-electrode-assemblies (MEAs) in a fuel cell stack. The method includes performing voltage cycling and humidification of the MEAs in the stack, including one or more temperature steps wherein current density of the stack is cycled within a predetermined range for each of the one or more temperature steps. The method also includes maintaining a fuel cell stack voltage within a predetermined range, and maintaining anode and cathode reactant flows at an approximate set-point during the current density cycling of the one or more temperature steps to break-in and humidify the MEAs in the stack so that the stack is able to operate at a predetermined threshold for a fuel cell stack voltage output capability.
Type:
Grant
Filed:
March 28, 2012
Date of Patent:
August 4, 2015
Assignee:
GM Global Technology Operations LLC
Inventors:
Pinkhas A. Rapaport, Aaron J. Blowers, James Leistra, Balasubramanian Lakshmanan
Abstract: A snap fit fastener includes a base, a holder, and a plurality of snap fit arms. The holder extends from the base and includes a holder wall defining a fastener hole. The fastener hole is sized to receive a finger. The snap fit arms are cantilevered from the base. Each snap fit arm includes a beam and an overhang protruding from the beam in a direction away from the holder. Each overhang is configured to engage a panel to couple the snap fit fastener to the panel.
Abstract: A system and method for adaptively verifying data in resource constrain systems. The adaptive data verification mechanism employs the proper mode of verification adaptively to balance cost/performance requirements plus security requirements. The algorithm uses a belief level for the validity of a received message, and assigns the belief level to a scale between a bona fide message at one end of the scale and a malicious message at an opposite end of the scale. Depending where on the scale the belief level falls determines which validation mode will be used to authenticate the message. In an alternate embodiment, the belief level relative to a scale and the amount of data waiting to be processed in a buffer are both used to determine which mode will be used to validate the message.
Abstract: Methods, system and apparatus are provided for securing a rechargeable electronic device with respect to a surface of a wireless battery charging apparatus of a vehicle.
Type:
Grant
Filed:
July 25, 2012
Date of Patent:
August 4, 2015
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventors:
Timothy M. Boundy, Andrew J. Farah, Paul Zubrickas
Abstract: A system and method for determining whether a resistor in a battery circuit on an electric vehicle cannot be used as a resistive heater for heating a cooling fluid for cooling the vehicle battery, but can used as a pre-charge resistor for starting the vehicle. A temperature sensor is provided proximate the resistor within the cooling fluid. The method turns on the resistor before turning on a coolant pump and samples the temperature at sample intervals over a predetermined period of time. The method then calculates an integral or differential of the sampled temperatures and compares that value with a calibrated threshold. If the temperature value is not greater than the threshold, meaning that the temperature indicates no cooling fluid is present, the algorithm disables the resistor for heating purposes, but maintains operation of the resistor for pre-charge purposes.
Type:
Grant
Filed:
January 24, 2012
Date of Patent:
August 4, 2015
Assignee:
GM Global Technology Operations LLC
Inventors:
Andrew J. Namou, Russell K. Steele, Michael E. Barton
Abstract: A system and method for determining the health of a DC motor, such as a DC motor on a vehicle. The method includes measuring a current output signal of the DC motor, determining a mean of the measured current signal over a predetermined time period and determining a variance estimation of the mean of the measured current. The method then uses the variance estimation to determine the health of the motor, including an end-of-life prediction of the motor, and uses the mean of the measured current to determine the performance (torque) of the motor.
Type:
Grant
Filed:
January 9, 2012
Date of Patent:
August 4, 2015
Assignee:
GM Global Technology Operations LLC
Inventors:
Mark N. Howell, Pattada A. Kallappa, Avoki Omekanda
Abstract: A method is provided for exchanging information to locate a key fob. The method comprises transmitting a wireless locator signal from a first portable wireless device, the wireless locator signal conveying the identity of the first portable wireless device and receiving a first once-adjusted wireless locator signal from a distant wireless device locator system, the first once-adjusted wireless locator signal comprising at least some information conveyed in the wireless locator signal.