Methods and systems are provided for indicating whether a canister purge valve in a vehicle evaporative emissions control system is degraded. In one example, an air intake system hydrocarbon (AIS HC) trap temperature may be monitored during a refueling event, and responsive to an indication that the AIS HC trap temperature change is greater than a predetermined threshold, it may be indicated that the canister purge valve is degraded. In this way, diagnosis of whether a vehicle canister purge valve is degraded may be indicated without the use of engine manifold vacuum, and may be advantageous for vehicles configured to operate for significant amounts of time without engine operation, or without intake manifold vacuum.

In some embodiments of the present disclosure, sensors mounted on a vehicle can allow opportunities for coasting to be predicted based on environmental conditions, route planning information, and/or vehicle-to-vehicle or vehicle-to-infrastructure signaling. In some embodiments of the present disclosure, these sensors can also predict a need for power and/or an end of a coast opportunity. These predictions can allow the vehicle to automatically enter a coasting state, and can predictively re-engage the engine and/or powertrain in order to make power available with no delay when desired by the operator.

An engine system includes: an intake line through which fresh air flows; an exhaust line through which exhaust gas flows; an exhaust gas recirculation (EGR) system which recirculates some of exhaust gas to a combustion chamber; a turbocharger having: a turbine that rotates by the exhaust gas; and a compressor rotating by the rotation of the turbine; an intercooler disposed in the intake line at a rear end of the compressor; an intake bypass line penetrating the intercooler from the intake line, adjusting the amount of intake gas to be supplied into the combustion chamber, and merging into the intake line at a front end of the compressor; a recirculation valve disposed in the intake bypass line; and a controller controlling opening and closing of the recirculation valve so that some of the intake gas is supplied into the intake line through the intake bypass line.

Methods and systems are provided for detecting a fuel dispensing nozzle coupled to a fuel tank of a vehicle and providing a visual indication of the presence of the fuel dispensing nozzle to a vehicle operator. In one example, a method may include detecting the fuel dispensing nozzle within the fuel tank and illuminating a portion of a fuel tank access region. Further, vehicle operation may be adjusted based on the detection, and one or more alerts may be communicated to the vehicle operator.

A handheld work apparatus has a combustion engine and an ignition device for controlling a spark plug. The ignition device includes an electronic control device having a short circuit button for switching off the combustion engine. A temperature sensor is for capturing an operating temperature. The short circuit button and the temperature sensor are connected to a common signal input of the control device via a common signal line. The temperature sensor is an ohmic resistance variable on the basis of the temperature. A measurement voltage dropped across the resistance of the temperature sensor is supplied, as an analog temperature signal, to a common analog signal input of the control device. The measurement voltage at the temperature sensor collapses in the button position of the short circuit button, as a result of which the analog temperature signal applied to the analog signal input of the control device is extinguished.

A control device for a WG actuator includes a feedback control unit for performing feedback control on the WG actuator in such a way that the position of a shaft detected by a position sensor gets close to a target position, and an abnormality detecting unit for providing an instruction to move the shaft in an axial direction for the feedback control unit, and for detecting an abnormality in the WG actuator on the basis of a result of a movement of the shaft, the movement being detected by the position sensor while the feedback control unit performs the instruction.

A method for controlling a position of a flap of a variable port flap control module (VCM) may include determining whether a vehicle state satisfies a predetermined opening condition of the VCM, determining a VCM opening voltage in consideration of tolerance of the flap of the VCM when the vehicle state satisfies the opening condition of the VCM, and controlling the flap of the VCM to be in an opened state by applying the VCM opening voltage to a motor of the VCM when the opening condition of the VCM is satisfied, during an engine starts.

Systems and methods for operating a driveline of a hybrid vehicle are disclosed. In one example, an engine may enter or stay in one of two cylinder modes in response to a request to a negative torque capacity of an electric machine being insufficient to provide a desired driveline braking torque. One cylinder mode operates cylinders with cylinder valves held closed and without fuel being injected to the cylinders while the other cylinder mode operates cylinders with valves that open and close without fuel being injected to the cylinders.

A method for a fuel system is provided, wherein a fuel vapor canister is vented to an engine intake during a first condition, and wherein a restriction in a canister vent pathway is indicated, responsive to a change in a fuel tank pressure transducer output greater than a threshold. If the fuel tank pressure transducer output changes less than the threshold, degradation of the fuel tank pressure transducer is indicated. In this way, a fuel tank pressure transducer offset may be distinguished from a canister vent pathway restriction if a fuel tank pressure transducer indicates a significant pressure or vacuum in a fuel tank following a vehicle-off soak.

Methods and systems for an engine are provided for monitoring cylinder valve deactivation of an engine. One example method includes, responsive to a request to diagnose a cylinder valve actuator of an engine during a non-fueling condition of the engine, commanding an EGR valve open and determining a first exhaust gas flow, and deactivating one or more cylinder valves and indicating cylinder valve actuator degradation when a second exhaust gas flow is not less than a threshold relative to the first exhaust gas flow.