Gm Global Technolgoy Operations, Inc.

Nicholas John Kalweit

Julian R Verdejo

David S Mathews

Michael R Grimes

Qi Ma

Kenneth J Buslepp

Layne K Wiggins

Louis A Avallone

Tameem K Assaf

Todd P Lindemann

Grant L Meade

Robert J Horner

Anab A Akanda

John V Bowman

Jeffrey A Morgan

James R Reeder, Jr

Danielle A Cory

Rachel A White

Marc Sauve

Xiangkun Kong

Robert J Homer

James C Matthews, Jr

Vukasin Denic

Charles E Leady

Colby T Stanley

Eric F Gorski

Amir R Lodhi

Presented are hybrid electric vehicle (HEV) powertrains and control logic for vehicle response management, methods for making/operating HEV powertrains, and motor vehicles equipped with HEV powertrains. A method of controlling a hybrid powertrain includes receiving data indicative of a motor speed of a traction motor and torque commands for the motor, an engine, and an engine disconnect clutch (EDC). A vehicle controller uses a state observer module to estimate a jerk response based on the motor speed, and determines if the EDC is in a torque-transmitting active state. Responsive to the EDC being in the active state, the controller calculates an incremental feedback control signal that is predicted to reduce the estimated jerk based on the engine, motor, and clutch torque commands. One or more torque command signals are transmitted to the engine, motor and/or EDC to modulate a torque output thereof based on the incremental feedback control signal.

Hybrid electric powertrain architectures and control logic for vehicle response management

An engine control system of a vehicle includes a cylinder control module configured to: determine a target sequence for at least activating and deactivating cylinders of an engine based on a torque request; and activate and deactivate the cylinders of the engine according to the target sequence. A values module is configured to determine, based on the target sequence, a plurality of coefficients and an offset value. An indicated mean effective pressure (IMEP) determination module is configured to determine an IMEP of a first cylinder based on: the plurality of coefficients; the offset value; and a plurality of engine speeds at a predetermined crankshaft positions, respectively.

Systems and methods for determining indicated mean effective pressure

A method, system, and engine are configured to determine a parameter based on rotational speeds of a crankshaft, over at least three cylinder combustion cycles. The method, system, and engine determine two or more estimated crankshaft rotational speeds at two or more positions in a leading cylinder combustion cycle, two or more estimated crankshaft rotational speeds at two or more positions in a middle cylinder combustion cycle, and two or more estimated crankshaft rotational speeds at two or more positions in a following cylinder combustion cycle. The method, system, and engine are configured to determine a calculated metric based on each of the determined leading estimated crankshaft rotational speeds, the determined middle estimated crankshaft rotational speeds, and the determined following estimated crankshaft rotational speeds. An engine parameter, such as misfire, is then determined based on the calculated metric.

Determination of engine parameter based on determining a metric over three or more cylinder combustion cycles

A system and method for optimizing a plug-in vehicle fleet having a plurality of battery packs across the vehicle fleet. Each vehicle includes a battery pack. The system includes sensors for measuring battery performance data and includes an open-circuit voltage, charging current, and/or temperature of the battery pack, a GPS receiver, a user interface, and a controller. The controller executes a method to monitor degradation of each battery pack using a variety of current and historical data points. The controller then controls a charging operation of each battery pack in a fleet via a charging control signal sent to a particular vehicle in the fleet. The controller also then determines the new location for each particular vehicle in a fleet.

Adaptive system and method for optimizing a fleet of plug-in vehicles

A system for a vehicle includes a filtering module and an indicated work module. The filtering module generates engine speeds based on positions of teeth of a toothed wheel that rotates with a crankshaft and based on a crankshaft position signal generated by a crankshaft position sensor. The crankshaft position sensor generates the crankshaft position signal based on rotation of the toothed wheel. The indicated work module generates an indicated work for a combustion cycle of a cylinder of an engine based on squares of first and second ones of the engine speeds and outputs the indicated work.

Systems and methods for determining crankshaft position based indicated mean effective pressure (IMEP)

A wastegate control system includes a wastegate control module configured to operate in one of a first PWM mode and a second PWM mode. A first transistor includes a control terminal connected to the wastegate control module, a first output terminal, and a second output terminal. A clamp circuit is connected to the first output terminal and the second output terminal of the first transistor. A second transistor includes a control terminal connected to the wastegate control module, a first output terminal, and a second output terminal. A diode has an anode connected to the second output terminal of the first transistor and a cathode connected to the first output terminal of the second transistor.

Wastegate control system for both current-controlled and on/off PWM-type solenoids

A system for a vehicle includes a filtering module, an indicated mean effective pressure (IMEP) determination module, and a stuck mechanism indicator module. The filtering module generates engine speeds based on positions of teeth of a toothed wheel that rotates with a crankshaft and based on a crankshaft position signal generated by a crankshaft position sensor. The IMEP determination module determines an IMEP for a combustion cycle of a cylinder of an engine based on squares of first and second ones of the engine speeds during the combustion cycle. The stuck mechanism indicator module selectively diagnoses a fault in a variable valve lift (VVL) mechanism of the cylinder based on the IMEP.

Variable valve lift mechanism fault detection systems and methods

A first control system for an engine includes first and second control modules. The first control module determines first and second fuel masses for first and second fuel injection systems of the engine, respectively, and that controls the first fuel injection system to inject a first fuel based on the first fuel mass. The second control module controls the second fuel injection system to inject a second fuel based on the second fuel mass. A second control system for an engine includes first and second control modules. The first control module controls a first fuel injection system of the engine to inject a first fuel and selectively disables at least one of a plurality of components of a second fuel injection system of the engine. The second control module controls the second fuel injection system to inject a second fuel.

System and method for controlling fuel injection in engines configured to operate using different fuels

A control module for a vehicle includes a time recording module that stores timestamps that correspond to each of N teeth of a target wheel of the vehicle in memory. N is an integer. A position module generates M angular positions based on the timestamps. M is an integer greater than one. Each of the M angular positions corresponds to a space between adjacent ones of the N teeth. A position estimator determines position of the target wheel based on the M positions.

Target wheel position detection systems

An internal combustion engine includes an exhaust gas feedstream flowing past a gas sensing device disposed therein. The gas sensor includes an integrated electrical heating element which provides a resistance indicative of its temperature. An unknown input observer is used to determine the exhaust gas feedstream temperature based on the heating element temperature.

Method and apparatus for determining temperature in a gas feedstream

A control module includes a sensor input, a discrete signal control module and a processor. The sensor input receives a sensor signal. The discrete signal control module includes a discrete signal input and selectively generates a digital signal based on the sensor signal. A processor includes a time-based input, a digital signal input, and an analog input. The time-based input and the analog input are in communication with the sensor input. The digital signal input is in communication with the discrete signal control module. The processor selectively receives one of the sensor signal and the digital signal via one of the time-based input, the digital signal input and the analog input.

Control module with flexible sensor inputs

A method and control system for controlling an engine includes an instantaneous crankshaft acceleration determining module determining an instantaneous crankshaft acceleration. An engine parameter adjustment module adjusts an engine parameter in response to the instantaneous crankshaft acceleration.

Method and control system for controlling an engine function based on crankshaft acceleration

A system and method comprises receiving a mass air flow signal having a frequency that varies based on mass air flow in an intake manifold of an engine, determining first period data from the mass air flow signal, deriving first mass data for the mass air flow signal based on the first period data, cumulating the first period data and the first mass data for N cylinder events, wherein N is an integer greater than 1, and calculating a mass air flow between the N cylinder events from the cumulated first period data and the cumulated first mass data.

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Novi, MI, United States of America

Nicholas John Kalweit