Abstract: Methods and systems for detecting a leak in a canister purge valve are disclosed. In one example approach, a method comprises indicating a leak in response to a temperature change in a fuel vapor canister coupled to a fuel tank in an emission control system while the engine is in operation and a purge valve is closed.

Abstract: Methods and systems for detecting a refueling event for diagnostics are disclosed. In one example approach a method comprises discontinuing leak diagnostics in response to a temperature change in a fuel vapor canister coupled to a fuel tank in an emission control system while the leak diagnostics are being performed in the emission control system.

Abstract: The present invention relates to a ventilating apparatus and to a method for controlling the ventilating apparatus. More particularly, the present invention relates to a ventilating apparatus comprising a humidifying unit having an antibiotic function, as well as to a method for controlling the ventilating apparatus.

Abstract: Methods and systems are provided for accurately confirming fuel tank depressurization before unlocking a fuel door to enable refueling. Following a refueling request, a fuel system may be sealed from the atmosphere while one or more fuel system valves are adjusted to divert fuel tank pressure or vacuum to an engine intake. Depressurization may be inferred based on the presence of air or vapor flow into the intake as sensed by a manifold airflow sensor.

Abstract: Methods and systems for inferring a fuel level in a fuel tank based on temperature changes in a carbon canister are disclosed. In one example approach a method comprises, indicating a fuel level in a fuel tank based on a temperature change of adsorbent in a carbon canister during refueling.

Abstract: Methods and systems for controlling a locking mechanism on a fuel cap for refueling a vehicle are disclosed. In one example approach, a method comprises venting a fuel tank into a vapor absorbent canister in response to a request to refuel and unlocking the fuel cap in response to a predetermined temperature change in said canister.

Abstract: A method for desorbing fuel vapors from a canister of a vehicle having an internal combustion engine and a fuel tank includes detecting the temperature within the interior of the fuel tank using a temperature sensor positioned within the fuel tank. The canister is in fluid communication with the fuel tank and an intake manifold of the engine of the vehicle. A vapor bypass valve is positioned along a flow line between the fuel tank and the canister. The vapor bypass valve is opened if the temperature inside the fuel tank falls below a pre-determined value. The low pressure region created within the fuel tank due to fall in temperature is utilized to route ambient air along with the fuel-vapors contained within the canister, towards the fuel tank, through the opened vapor bypass valve.

Abstract: Systems and methods for internal orifice characterization in an evaporative leak check module are disclosed. In one example approach, a method comprises operating a pump to draw air from an emission control system through an orifice to obtain a reference pressure, and indicating a leak in response to pressure in the emission control system remaining above a threshold pressure while operating the pump to decrease pressure in the emission control system, where the threshold pressure is based on a coded indication and the reference pressure.

Abstract: Methods and systems for detecting a refueling event for diagnostics are disclosed. In one example approach a method comprises discontinuing leak diagnostics in response to a temperature change in a fuel vapor canister coupled to a fuel tank in an emission control system while the leak diagnostics are being performed in the emission control system.

Abstract: Methods and systems for purging a hydrocarbon trap in an engine intake in a vehicle are disclosed. In one example approach, a method comprises during an engine off condition, operating a pump in a purge line coupled to a fuel vapor canister in an emission control system to deliver fuel stored in a hydrocarbon trap in an intake of the engine to the fuel vapor canister.

Abstract: Methods and systems for passively purging a hydrocarbon trap in an engine intake in a vehicle are disclosed. In one example approach, a method comprises, in response to an ambient temperature decrease during an engine off condition while a fuel tank is sealed from atmosphere, delivering fuel stored in a hydrocarbon trap in an intake of the engine to a fuel vapor canister coupled to the fuel tank in an emission control system.

Abstract: Methods and systems for fuel system leak detection in a hybrid electric vehicle using a fuel reservoir are disclosed. In one example approach, a method comprises, during an engine off condition, delivering fuel from a fuel tank into a reservoir while the fuel tank is vented to atmosphere, and sealing the fuel tank from atmosphere and indicating a leak based on pressure in the fuel tank.

Abstract: A method for a fuel system coupled to an engine comprising: under vacuum conditions, opening the fuel vapor canister purge valve, and generating pressure pulsations in a conduit coupled to the fuel vapor canister purge valve by opening and closing a fuel vapor canister vent valve one or more times while maintaining the fuel vapor canister purge valve open. In this way, contaminants and/or debris that may prevent the canister purge valve from closing completely may be dislodged and evacuated to the intake manifold.

Abstract: Systems and methods for operating an engine with a fuel vapor recovery system are disclosed. In one example approach, a method for an engine with a fuel vapor recovery system including a multi-tubular fuel vapor canister comprises directing air through a first set of adsorbent passages in the fuel vapor canister to purge fuel vapor therefrom while not directing air through a second set of adsorbent passages in the fuel vapor canister; and directing air through the second set of adsorbent passages to purge fuel vapor therefrom while not directing air through the first set of adsorbent passages.

Abstract: A light guide for converting a dot light source or a linear light source into a planar light source, and the light guide includes a light emitting surface and a reflection surface facing the light emitting surface and having a plurality of reflection patterns, wherein a width of the reflection patterns is less than 10 ?m.

Abstract: A method and apparatus for a pressurized fuel system with a fuel tank, a fuel fill pipe, and a remotely-controlled lockable fuel opening which selectably seals the pipe entrance. A carbon canister has an inlet for receiving a flow of air and fuel vapors from the tank and has an outlet providing a treated air flow to atmosphere. A fuel tank isolation valve is connected between the air space and the inlet of the carbon canister for selectively allowing pressurization of the fuel tank, wherein the pressurization must be relieved prior to refilling of fuel to the fuel tank. A vacuum pump is coupled to the outlet of the carbon canister, wherein the vacuum pump is configured to activate to increase air flow through the carbon canister from the fuel tank when the fuel tank isolation valve is opened during refilling.

Abstract: A ventilation device and a controlling method of the same are provided. The ventilation device may include a humidifier having improved humidification efficiency and improved durability.

Abstract: The present invention may relate to a humidifying unit. More particularly, the present invention may relate to a humidifying unit with improved humidifying efficiency and increased durability, and to a ventilating apparatus comprising the same.

Abstract: The present invention relates to a ventilating apparatus and to a method for controlling the ventilating apparatus. More particularly, the present invention relates to a ventilating apparatus comprising a humidifying unit having an antibiotic function, as well as to a method for controlling the ventilating apparatus.

Abstract: A volume-based dispensing control method is capable of enabling a pump to dispense a resin with greatly increased accuracy. The method includes: a preliminary dispensing step in which a resin is dispensed on one or more workpieces with a pump; a volume measuring step in which the workpieces passed through the preliminary dispensing step is scanned by an optical scanner to measure a dispensed resin volume; a corrected-volume calculating step in which a corrected volume of the resin to be additionally dispensed is calculated by using a difference between the dispensed resin volume measured in the volume measuring step and a predetermined dispensing volume; and a corrective dispensing step in which the resin is dispensed on the workpieces in light of the corrected volume calculated in the corrected-volume calculating step.