Abstract: Methods and systems are provided for a fuel system. In one example, a fuel system includes a plurality of canisters with a fuel tank isolation valve (FTIV) configured to control a fluid coupling between each of the plurality of canisters and a fuel tank. The FTIV is actuated based on one or more of a fuel tank pressure and a load of each of the plurality of canisters.

Abstract: Methods and systems are provided for diagnosing valves of a fuel system. In one example, the fuel system is configured to reduce a depressurization time of one or more fuel tanks arranged therein. A method for diagnosing the valves includes monitoring a number of pre-mature shut-off events during a refueling event to determine if the valves are degraded.

Abstract: Methods and systems are provided for a fuel system. In one example, a method may include adjusting operation of a fuel-operated heater (FOH) in response to a condition of a canister. The FOH is activated and configured to flow heated air to the canister to promote desorption of fuel vapors stored therein.

Abstract: An example method executed by processor of a vehicle payload assistance system may include obtaining information about a first laden weight of a vehicle. The processor determines a weight difference between the first laden weight and a payload capacity of the vehicle, and further determines, based on the weight difference, a payload margin available for loading the vehicle. A vehicle payload assistance operation may then be executed that includes detecting a change in the first laden weight due to introduction of an object into the vehicle, obtaining information about a second laden weight of the vehicle after introduction of the object into the vehicle, determining that the second laden weight exceeds the payload margin available for loading the vehicle, and issuing an advisory to reduce the second laden weight by removing the object from the vehicle.

Abstract: Systems and methods for heating a vehicle via a fuel operated heater are presented. In one example, the fuel operated heater heats a catalyst in an exhaust system of an internal combustion engine to reduce engine emissions. In another example, the fuel operated heater heats a particulate filter to purge soot from the particulate filter.

Abstract: Methods and systems are provided for deep purging of fuel vapors of an air intake system hydrocarbon trap. The purging may comprise supplying heated air to the air intake system hydrocarbon trap via a carbon filled fuel vapor storage canister that includes an integral heater. The heated air operates to liberate heavier hydrocarbons from the air intake system hydrocarbon trap.

Abstract: Methods and systems are provided for an evaporative emissions system. In one example, a method includes fluidly coupling the evaporative emissions system to an interior volume of a fuel tank in response to a canister load and a fuel tank pressure. The method further includes scaling the evaporative emissions system from atmosphere and an intake manifold.

Abstract: Methods and systems are provided for a fuel system. In one example, a method includes adjusting a threshold of a diagnostic based on a distance between a fuel tank and a ground surface. The distance is inferred based on a vehicle weight.

Abstract: Methods and systems are provided for diagnosing a fuel refill pressure relief valve that is located along a passage that extends from an exhaust system to a fuel tank. The method may include commanding the fuel refill pressure relief valve open while monitoring flow through particulate filter via a differential pressure sensor.

Abstract: Methods and systems are provided for deep purging of fuel vapors of an air intake system hydrocarbon trap. The purging may comprise supplying heated air to the air intake system hydrocarbon trap via a carbon filled fuel vapor storage canister that includes an integral heater. The heated air operates to liberate heavier hydrocarbons from the air intake system hydrocarbon trap.

Abstract: Methods and systems are presented for onboard fuel vapor recovery for large heavy duty vehicles. In one example, the methods and systems include combining a plurality of carbon filled fuel vapor storage canisters in parallel and series to capture fuel vapors that may be generated via a heavy duty vehicle.

Abstract: Methods and systems are presented for onboard fuel vapor recovery for large heavy duty vehicles. In one example, the methods and systems include combining a plurality of carbon filled fuel vapor storage canisters in parallel and series to capture fuel vapors that may be generated via a heavy duty vehicle.

Abstract: Methods and systems for diagnosing operation of an evaporative emissions system are described. The methods and systems may include increasing an amount of vacuum stored in an evaporative emissions system during discontinuously operating an engine in a boosted operating mode. Storing vacuum allows the evaporative emissions system to reach a desired vacuum level to verify absence of an evaporative emissions system breech.

Abstract: System and methods for an internal combustion engine are described. In one example, the internal combustion engine includes one or more engine cylinders having igniters that include a pre-chamber. One or more of the engine cylinders may be operated in a skip-fire mode if a cylinder misfires or if the internal combustion engine is cold started.

Abstract: A vehicle including a transceiver, a wheel drive motor and a processor is disclosed. The transceiver may be configured to receive road information and weather information, and the wheel drive motor may be configured to control torque of a vehicle wheel. The processor may be configured to receive a trigger signal when the vehicle approaches a curvy road. The processor may be further configured to obtain the road information and the weather information from the transceiver responsive to obtaining the trigger signal. The road information may include radius of curvature of the curvy road. The processor may calculate a vehicle speed based on the obtained road information and the weather information. The processor may further transmit a command signal to the wheel drive motor to vehicle wheel control torque based on the vehicle speed.

Abstract: A system to control a trailer is disclosed. The trailer may be attached to a towing vehicle. The system may include a transceiver configured to receive road information, vehicle information and trailer information. The system may further include a processor configured to determine that a predefined condition may be met based on the received road information, the vehicle information, and the trailer information. The processor may be further configured to transmit a command signal to a trailer wheel control unit to activate a trailer wheel drive motor responsive to a determination that the predefined condition is met. The trailer wheel drive motor may be located in a trailer.

Abstract: A vehicle having a transceiver and a processor is disclosed. The transceiver may receive environment condition, road condition, and vehicle information. The processor may be communicatively coupled with the transceiver, and may obtain the environment condition, the road condition, and the vehicle information from the transceiver. The processor may determine that the vehicle may be in an unstable driving state based on the obtained condition. Responsive to determining that the vehicle may be in the unstable driving state, the processor may determine a vehicle instability type based on the environment condition, the road condition, and the vehicle information. The processor may be further configured to generate a first instruction for a first vehicle wheel and a second instruction for a second vehicle wheel based on the vehicle instability type, and cause a vehicle movement based on the first instruction and the second instruction.

Abstract: A vehicle parking assist system is disclosed. The vehicle parking assist system may include a transceiver configured to receive parking space information, a memory configured to store vehicle information, and a processor. The processor may be configured to generate a first instruction for a first vehicle wheel and a second instruction for a second vehicle wheel based on the parking space information and the vehicle information. Based on the first instruction and the second instruction, the processor may cause vehicle movement to park a vehicle in a parking space. The processor may be configured to obtain a trigger event, and generate a third instruction for the first vehicle wheel and a fourth instruction for the second vehicle wheel based on the first instruction and the second instruction. Based on the third instruction and the fourth instruction, the processor may cause vehicle movement to exit the vehicle from the parking space.

Abstract: Methods and systems are provided for adjusting canister purge flow based on robustness conditions of pre-chamber ignition of an engine at non-steady state operating conditions wherein robustness conditions comprise operating conditions wherein the engine operates at air to fuel ratios that are under or exceed stoichiometric ratios and canister purge flow is adjusted proportionally based on a degree of robustness of the robustness conditions. Further methods are provided for adjusting canister purge flow based on robustness conditions of pre-chamber ignition of the engine at steady state operating conditions.

Abstract: Methods and systems are provided for a fuel system. In one example, a method may include monitoring uncontrolled venting events when a controller is off and adjusting a cleaning schedule of a canister based on a venting event count including venting events when the controller is on and off.