Abstract: A crankshaft assembly for an internal combustion engine includes a crankshaft defining a plurality of first apertures, a damper defining a plurality of second apertures, and a barring interface component configured to be engaged by a barring tool to facilitate rotation of the crankshaft assembly. The barring interface component defines a plurality of third apertures. Each of the plurality of third apertures is configured to align with one of the plurality of first apertures and one of the plurality of second apertures to selectively receive one of a plurality of fasteners to couple the barring interface component and the damper to the crankshaft.

Abstract: An electric auxiliary power distribution system for a hybrid electric vehicle including a battery pack, a power system, a charge determination module, and a controller. The power system is configured to supply power to the battery pack from an engine. The controller is communicably coupled to the power system and the charge determination module. The controller is configured to: receive, from the charge determination module, a charge parameter associated with a hoteling event of the hybrid electric vehicle; determine a threshold state of charge based on the charge parameter; and control the power system to increase a state of charge of the battery pack to satisfy the threshold state of charge.

Abstract: A system includes a controller communicably coupled to an engine. The controller is configured to perform operations comprising receiving a temperature value regarding an aftertreatment system; receiving a regeneration power value regarding a braking event; comparing the temperature value to a temperature threshold. Responsive to the temperature value being above the temperature threshold and the regeneration power value being at or above a first power threshold, the controller is configured to cause one or more electric machines to rotate the engine during the braking event. Responsive to the temperature value being below the temperature threshold and the regeneration power value being at or above a second power threshold, the controller is configured to cause the one or more electric machines to rotate the engine, and activate a heater associated with the aftertreatment system to heat the aftertreatment system during the braking event.

Abstract: Presented herein are systems and methods for performing federated learning across vehicles. A computing device having one or more processors coupled with memory can maintain, on the memory, a first machine learning (ML) comprising a first plurality of parameters for determining values identifying a characteristic of a vehicle function on at least one of a plurality of vehicles. The computing device can receive a second plurality of parameters generated by a second ML used by each respective vehicle. The computing device can update the first plurality of parameters of the first ML in accordance with the second plurality of parameters received from each respective vehicle of the plurality of vehicles. The computing device can transmit, to a vehicle, the updated first plurality of parameters to update the second plurality of parameters of the second ML on the vehicle.

Abstract: A method includes: receiving information indicative of operation of a vehicle and of a driving condition for the vehicle; determining a slowdown event of the vehicle within a predefined time period or distance based on the received information; determining, in response to the determination of the slowdown event within the predefined time period or distance; that a takeover event is feasible based on the received information; and, initiating the takeover event in response to the determination that the takeover event is feasible.

Abstract: An exhaust aftertreatment system and a method thereof is provided. The system includes a heater configured to provide heat to a catalyst. The system further includes a heater control unit (HCU) configured to supply electrical power to the heater, and a power supply control unit (PSCU) configured to supply electrical power to the HCU at a variable voltage. The HCU is configured to determine a setpoint parameter which varies in response to variation in a commanded power output of the HCU to drive the heater. The PSCU is configured to receive the setpoint parameter and to adjust the variable voltage supplied to the HCU in response to the setpoint parameter. The adjustment of the setpoint parameter is effective to optimize an efficiency of the HCU during operation to supply the commanded power output to the heater.

Abstract: A gearbox for a generator includes an input shaft coupled to an input gear, and an output shaft coupled to an output gear. The gearbox further includes a first layshaft coupled to a first pair of splitter gears, where one of the first pair of splitter gears is configured to mesh with the input gear and the other of the first pair of splitter gears is configured to mesh with the output gear. The gearbox also includes a second layshaft coupled to a second pair of splitter gears, where one of the second pair of splitter gears is configured to mesh with the input gear and the other of the second pair of splitter gears is configured to mesh with the output gear.

Abstract: A method of controlling an aftertreatment system includes receiving a first input target and a first threshold associated with a first aftertreatment system component; receiving a second threshold associated with a second aftertreatment system component; responsive to the first threshold being greater than the second threshold, determining a second input target that is at or below the first threshold and at or above the second threshold, the second input target associated with a third aftertreatment system component; receiving a nitrous oxide value; determining a first output target based on at least the first input target, the second input target, and the nitrous oxide value; and controlling the aftertreatment system based on the first output target.

Abstract: A piston includes a skirt portion including a skirt sidewall centered about a piston center axis, and a crown portion positioned on an end of the skirt portion. The crown portion and the skirt portion cooperate to define a piston cavity. The crown portion includes a crown sidewall continuous with the skirt sidewall, a rim continuous with the crown sidewall and extending inward from the crown sidewall, an inner wall extending inward from the crown sidewall, and a bowl including a bowl wall extending from the rim to the inner wall. The crown sidewall, the rim, the inner wall, and the bowl wall cooperate to define a passageway extending around the bowl. The inner wall defines a channel extending at a non-zero angle relative to the piston center axis. The channel is in fluid receiving communication with the passageway and in fluid providing communication with the piston cavity.

Abstract: A system includes a first heater positioned downstream of an engine, a second heater positioned downstream of the first heater, and a controller coupled to the first and second heaters. The controller is configured to: responsive to an engine temperature regarding the engine being above a first temperature threshold, receive information regarding a characteristic of a battery coupled to the first heater and the second heater; responsive to the characteristic of the battery being above a first predefined threshold and below a second predefined threshold, cause the first heater to provide heat to an exhaust aftertreatment system; and, responsive to the characteristic of the battery being above the first and second predefined thresholds, cause the first and second heaters to provide heat to the exhaust aftertreatment system.

Abstract: A cylinder block includes a cylinder block body and a load path structure. The cylinder block body defines a first cylinder block upper bore. The load path structure includes a first support rib having a first support rib body interfacing with the first cylinder block upper bore. The load path structure is configured to transfer a load from the first cylinder block upper bore along a non-linear path within the cylinder block body away from the first cylinder block upper bore.

Abstract: An internal combustion engine includes a cylinder head with an exhaust manifold (IBM) integrated with the cylinder head. The exhaust manifold comprises a first duct having an interior surface defining a plurality of first duct inlet fluid passages and a first duct exhaust passage in fluid receiving communication with the plurality of first duct inlet fluid passages. The exhaust manifold further comprises a fin projecting from the interior surface into one of the first duct inlet fluid passages.

Abstract: Catalytic coatings and techniques for applying the catalytic coatings may be utilized in connection with a number of engine system components including fuel injectors components, exhaust gas recirculation (EGR) valve components, EGR cooler components, piston components, spark plugs, engine valves (intake valves and exhaust valves), engine valve seats, oxygen sensors, NOx sensors, and particulate sensors.

Abstract: A device for monitoring an engine surface includes a fixture body defining a breather aperture. The fixture body includes a first face engageable with a surface of an engine cylinder bore. The first face defines a recess. The fixture body also includes a first end including a lip that engages with a cylinder block. The first end defines a first end aperture in fluid communication with the recess. The device also includes at least one biasing member coupled to the fixture body and configured to exert a force on the fixture body causing the first face of the fixture body to contact the surface of the cylinder bore.

Abstract: A system includes a position-controlled valve and at least one processing circuit. The at least one processing circuit is configured to: determine one or more estimated operational parameters for the position-controlled valve based on a model; retrieve one or more reference parameters for the position-controlled valve; determine a margin of error between the one or more estimated operational parameters and the one or more reference parameters; determine a trend regarding the margin of error; predict a fault in response to the trend regarding the margin of error; and, control operation of the position-controlled valve in response to predicting the fault.

Abstract: Six-phase permanent magnet-type electric machines are disclosed. The electric machine includes a stator and a rotor configured to operate as a first three-phase electric machine and a second three-phase electric machine. The first and second three-phase electric machines are coupled with each other via a fractional slot combination with concentrated windings such that a mechanical separation between the first and second three-phase electric machines is at least 60 mechanical degrees.

Abstract: Methods and systems for a powertrain power management in a vehicle with an electric motor, and an engine are disclosed. The methods and systems involve a powertrain that is operatively coupled to the engine and the electric motor, and an optimizer module operatively coupled to the powertrain. The optimizer module receives an operator information to travel a route from a remote management module, receives current route information for the route from a mapping application in response to the operator information, measures current vehicle status information for the hybrid vehicle, and decides a power management strategy for the vehicle based on the current route information and the current vehicle status information.

Abstract: An electronic control includes a housing and an interface extending across the housing. A circuit board disposed in the housing includes a frequency input pin operatively coupled with the interface and an analog input pin operatively coupled the interface. A first conductive trace is operatively coupled with the frequency input pin. A second conductive trace operatively coupled with the analog input pin. A microcontroller is mounted on the circuit board and includes a selectably configurable input operatively coupled at least one of the first conductive trace and the second conductive trace. The microcontroller is configured to process at least one of a frequency signal received via the frequency input pin and an analog signal received at the analog input pin.

Abstract: A system includes an engine, one or more gaseous fuel injectors configured to inject gaseous fuel for combustion by the engine, and an electronic control system configured to perform an engine shutdown, during the engine shutdown measure a first pressure of gaseous fuel supplied to at least a first injector of the one or more gaseous fuel injectors, command a first operation of the first injector comprising a plurality of shorter injection pulses, after the plurality of shorter injection pulses measure a second pressure of gaseous fuel supplied to the first injector, command a second operation of the first injector comprising one or more longer injection pulses, each of the one or more longer injection pulses having a duration greater that any of the plurality of shorter injection pulses, and after the one or more longer injection pulses measure a third pressure of gaseous fuel supplied to the first injector, diagnose the first injector in response to the first pressure, the second pressure, and the third pre

Abstract: Systems and methods for diagnosing a catalyst of an aftertreatment system are described herein. The system includes an exhaust aftertreatment system and a controller coupled to the exhaust aftertreatment system. The controller receives a dosing efficiency regarding a catalyst of the aftertreatment system and determines an actual aging condition of the catalyst based at least in part on the dosing efficiency. The controller further receives temperature data indicative of an operating temperature of the catalyst, the temperature data having associated runtime durations and determines an expected aging condition of the catalyst based on the temperature data and the associated runtime durations. The controller transmits an early aging notification to a user device in response to the actual aging condition exceeding the expected aging condition.