Methods and systems are provided for a fuel system of a hybrid vehicle. In one example, a system may include a fuel tank selectively fluidly coupled to a fuel vapor canister via a first conduit that includes a fuel tank isolation valve and via a second conduit that includes a tank pressure control valve and a pump. In one example, the pump is a vacuum pump.

Values of at least one energy utilization characteristic, which represents a first energy utilization process in a first vehicle, are determined. Furthermore, values of at least one parameter, which represents at least one boundary condition of the energy utilization in the first vehicle during the first energy utilization process, are also determined. A mathematical relationship between at least one or more values provided for the at least one energy utilization characteristic and the corresponding values of the parameters is determined and a profile record comprising a record and/or learning data is provided on the basis of at least one mathematical relationship determined. Depending on the profile record, at least one operating parameter of the drive system of the first vehicle and/or of a second vehicle is adapted in a second energy utilization process.

Methods and systems are provided for reducing carbon buildup in an exhaust gas recirculation system of an engine of a vehicle. In one example, a method comprises injecting a diesel exhaust fluid into an intake manifold of the engine, routing the diesel exhaust fluid into the exhaust gas recirculation system, and vaporizing the diesel exhaust fluid in the exhaust gas recirculation system. In this way, any carbon deposits associated with an exhaust gas recirculation valve and/or exhaust gas recirculation passage may be reduced, which may increase fuel economy and may reduce undesired emissions.

A control device for an internal combustion engine includes processing circuitry. The processing circuitry is configured to execute a purging process that draws the fuel vapor trapped in the canister into the intake passage by controlling the purge valve, a fuel feeding process that feeds the air-fuel mixture, which includes the fuel supplied to the cylinder, to the exhaust passage without burning the air-fuel mixture in the cylinder, and a fuel supply process that supplies fuel to the cylinder when the fuel feeding process is being performed. The processing circuitry is further configured to perform the fuel supply process by performing the purging process.

The invention relates to a method for operating a motor vehicle, in which by at least one ultrasonic sensor, operated in the active operation mode, of an ultrasonic sensor device of the motor vehicle ultrasonic waves are emitted into an environmental region of the motor vehicle, wherein the motor vehicle as hybrid vehicle is equipped with an internal combustion engine (and an electric drive machine and in the active operation mode of the ultrasonic sensor arranged on a rear part of the motor vehicle the motor vehicle at least temporarily is operated by means of the electric drive machine. The invention also relates to a motor vehicle.

Methods and systems are provided for reducing carbon buildup in an exhaust gas recirculation system of an engine of a vehicle. In one example, a method comprises injecting a diesel exhaust fluid into an intake manifold of the engine, routing the diesel exhaust fluid into the exhaust gas recirculation system, and vaporizing the diesel exhaust fluid in the exhaust gas recirculation system. In this way, any carbon deposits associated with an exhaust gas recirculation valve and/or exhaust gas recirculation passage may be reduced, which may increase fuel economy and may reduce undesired emissions.

A power transmission system for a vehicle and a vehicle including the same are provided. The power transmission system includes: an engine unit configured to generate a power; an input shaft; an output shaft configured to transfer at least partial of the power from the input shaft; an output unit configured to rotate differentially relative to the output shaft; a synchronizer disposed on the output shaft and configured to selectively engage with the output unit such that the output unit rotates synchronously with the output shaft, and the output unit is configured to output power to drive one or more front and/or rear wheels of the vehicle; a first motor generator configured to directly or indirectly couple with one of the input shaft and the output shaft for power transmission; and a second motor generator configured to drive one or more front or rear wheels of the vehicle.

An engine system for a vehicle may include an engine including a plurality of cylinders connected to a crankshaft, a Cylinder Deactivation (CDA) apparatus provided to at least one cylinder among the plurality of cylinders of the engine, a first flywheel mounted on the crankshaft, a second flywheel having a rotation center formed eccentrically with respect to the crankshaft by being disposed at a position corresponding to the cylinder including the CDA apparatus, and a clutch provided to the crankshaft to selectively transmit a torque of the crankshaft to the second flywheel during operation of the CDA apparatus.

An exhaust gas control system for a hybrid vehicle may include a NOx storage-reduction catalyst, and an electronic control unit. The electronic control unit may control the internal combustion engine so as to reduce an engine speed or stop operation of the internal combustion engine and control an electric motor so as to compensate for needed torque of the hybrid vehicle when NOx reduction treatment is executed in a case where a charging amount of a battery when a predetermined NOx reduction execution condition is satisfied is equal to or larger than a predetermined charging amount, and control the internal combustion engine so as to maintain operational state of the internal combustion engine at a normal operation when the NOx reduction treatment is executed in a case where the charging amount of the battery when the predetermined NOx reduction execution condition is satisfied is smaller than the predetermined charging amount.

Methods and systems are provided for synergizing the benefits of an engine exhaust driven fuel reformer in a hybrid vehicle system. A vehicle controller may hold the engine in a narrow operating range where fuel reformer operation is optimal while using motor and/or CVT adjustments to address transients generated as driver demand varies. The controller may also adjust an operating range of temperatures of the reformer to enable extended fuel reforming even after the engine of the hybrid has been shutdown.