Abstract: Methods and systems are provided for performing a reverse purge of an evaporative emissions canister in a vehicle with a sealed variable volume fuel tank. In one example, a method may comprise in response to an ambient temperature reducing during a diurnal temperature cycle, and further in response to the EVAP canister loaded with fuel vapors above a threshold, closing a valve positioned at an atmospheric port of the fuel tank and opening a fuel tank isolation valve. In one example, the fuel tank isolation valve may be in fluid communication between the fuel tank and the EVAP canister. In this way, it is possible to convert a sealed variable volume fuel tank to a vented pressurized fuel tank and initiate a reverse purge during the cooldown hours of the diurnal temperature cycle.

Abstract: Methods and systems are presented for diagnosing operation of an evaporative emissions system that included two carbon filled fuel vapor storage canisters that are arranged in parallel. In one example, operation of a first canister vent valve, a second canister vent valve, and a canister purge valve are adjusted to diagnose breaches and obstructions within the evaporative emissions system.

Abstract: Various sounds are reproduced in a passenger cabin of a transportation vehicle with a plurality of positions for seating respective persons who may have differential hearing losses between a right ear and a left ear. A dominant ear and a nondominant ear are identified of a particular user in a respective seating position. Electrical audio signals are generated in a sound source intended for reproduction by an array of speakers disposed within the passenger cabin for directing reproduced sounds toward the seating positions from respective directions. The audio signals are differentially adjusted before sending them to the array of speakers such that reproduced sounds directed to the nondominant ear are attenuated in relation to the reproduced sounds directed to the dominant ear (i.e., the sound to the dominant ear is enhanced).

Abstract: Methods and systems are provided for capless refueling system of a vehicle. In one example, a method may include diagnosing a door seal of a capless unit of the capless refueling system. The diagnosing includes determining a condition of the door seal in response to a leak being present in an evaporative emissions system.

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: 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: Methods and systems are provided for capless refueling system of a vehicle. In one example, a method may include cleaning a capless unit of a capless refueling system by generating vacuum in the capless refueling system and delivering compressed air to the capless unit from an electrical booster of an engine. The compressed air may be delivered to the capless unit via a two-way valve configured to control a flow path of the compressed air.

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: Methods and systems are provided for a fuel system. In one example, a method may include adjusting operation of a fuel-operated heater (FOH) and an exhaust system to regenerate the FOH. The operation may include flowing gases from the exhaust system to the FOH to return the FOH to a less coked state.

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: Methods and systems for diagnosing an evaporative emissions system are discussed. An example method includes diagnosing a venturi pump of an evaporative emissions system based on feedback from an evaporative leak check module (ELCM) pressure sensor and a fuel tank pressure transducer (FTPT). An engine of a vehicle is off during the diagnosing.

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) and an exhaust system to regenerate the FOH. The operation may include flowing gases from the exhaust system to the FOH to return the FOH to a less coked state.

Abstract: Methods and systems are provided for capless refueling system of a vehicle. In one example, a method may include diagnosing a door seal of a capless unit of the capless refueling system. The diagnosing includes determining a condition of the door seal in response to a leak being present in an evaporative emissions system.

Abstract: Methods and systems for diagnosing an evaporative emissions system are discussed. An example method includes diagnosing a venturi pump of an evaporative emissions system based on feedback from an evaporative leak check module (ELCM) pressure sensor and a fuel tank pressure transducer (FTPT). An engine of a vehicle is off during the diagnosing.

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 presented for diagnosing operation of an evaporative emissions system. The methods and systems include two fuel filler neck valves to control flow of fuel and fuel vapors into and out of a fuel filler neck tube. The two fuel filler neck valves may be biased closed with return springs.

Abstract: Methods and systems are provided for an evaporative emission fuel (EVAP) system. In one example, a system for the EVAP system includes a delta pressure sensor arranged between a first purge line coupled to a first canister and a second purge line coupled to a second canister arranged in parallel with the first canister.

Abstract: Methods and systems are presented for collecting fuel vapors in a fuel system that includes a side mount fuel tank. The methods and systems may allow fuel vapors to be captured during filling of the side mount fuel tank. In one example, the side mount fuel tank is fitted with a fuel filler tube that extends into the side mount fuel tank so that fuel vapors may be captured while the side mount fuel tank is being filled.

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.