Patent application number | Description | Published |
20110079738 | Filter Means, Motor Vehicle, and Method for Operating Filter Means - The invention relates to an activated charcoal filter for storing and releasing gaseous hydrocarbons which originate from a fuel supply means of a motor vehicle. The activated charcoal can be supplied with gaseous hydrocarbons via an inlet. A heating means for heating of the activated charcoal is made available by a tank shutoff valve by means of which the inlet can be shut off. Since the tank shutoff valve is being operated as a heating means, an additional heating means for regenerating the activated charcoal can be omitted. Furthermore, the invention relates to a motor vehicle with such an activated charcoal filter and a method for operating an activated charcoal filter. | 04-07-2011 |
20110284125 | Tank venting device for a fuel tank of a vehicle, and method for venting a fuel tank - The invention relates to a tank venting system for a fuel tank ( | 11-24-2011 |
20120085424 | METHOD FOR ADJUSTING PRESSURE IN A FUEL TANK AND A FUEL TANK SYSTEM - A method and a fuel tank system for adjusting a pressure in a fuel tank are described. Evaporated fuel tank escapes from the fuel tank under overpressure with respect to the ambient and is transferred to a temporary storage for at least one substance of the evaporated fuel. A venting means, through which the evaporated fuel escapes, is controlled by at least one parameter different from a pressure or at least one information provided in form of data. The pressure in the fuel tank can thereby be more variably adjusted. | 04-12-2012 |
20120111307 | TANK VENTING DEVICE FOR A FUEL TANK OF A MOTOR VEHICLE - A tank venting device for a fuel tank of a motor vehicle includes an activated carbon filter which is connected to a fuel tank via a first gas line and connected to the atmosphere or ambient environment via a second gas line. A valve unit includes a single two-stage solenoid valve to control a gas flow through the first and second gas lines. | 05-10-2012 |
20120152489 | Device for cooling and condensing fuel vapors - The invention relates to a device for cooling fuel for an internal combustion engine, with a heat pipe, which includes an evaporation zone and a condensation zone. To decrease the amount of gaseous hydrocarbons conducted into an activated carbon filter of a tank ventilation device of a tank of the internal combustion engine, and thereby avoid undesired bleed-emission or an enlargement of the activated carbon filer, it is proposed according to the invention, that the evaporation zone of the heat pipe is in thermal contact with fuel vapors, to condense part of the fuel vapors before the hydrocarbons contained therein can enter the activated carbon filter. | 06-21-2012 |
20120160218 | Fuel system - A fuel system in particular of a motor vehicle, includes a fuel tank and a ventilation device for ventilating the fuel tank. The ventilation device has at least one separation device which has a temporary accumulator for liquid fuel. The separation device is made at least in part of a porous material and/or is filled with the porous material. | 06-28-2012 |
20120160219 | Device for ventilating and aerating a fuel tank - A device for ventilating and aerating a fuel tank includes a tank shut-off valve and two tank pressure control valves. One of the tank pressure control valves opens in response to an overpressure in the fuel tank and the other one of the tank pressure control valves closes in response to a negative pressure in the fuel tank. A valve unit which is formed from one or multiple of the valves is mountable vertically or horizontally and has a fuel connection which communicates with the fuel tank and a filter connection which communicates with an activated carbon filter. The two connections are generally oriented parallel and point downwards in vertical mounting position of the valve unit and in sideward direction(s) in horizontal mounting position of the valve unit and are arranged at or near the bottom side of the valve unit. | 06-28-2012 |
20120160220 | Device for ventilating and aerating a fuel tank - A device for ventilating and aerating a fuel tank, in particular a fuel tank of an internal combustion engine of a motor vehicle, includes an activated carbon filter, a controllable tank shut-off valve and two tank pressure control valves. One of the tank pressure control valves opens in response to an overpressure in the fuel tank, and the other one of the tank pressure control valves of opens in response to a negative pressure in the fuel tank. In order to reduce the amount of volatile hydrocarbons escaping into the environment from the tank shut-off valve and the tank pressure control valves, at least the two tank pressure control valves and preferably the two tank pressure control valves and the tank shut-off valve are arranged inside the fuel tank. | 06-28-2012 |
20120168454 | Device for ventilating a fuel tank - A device for ventilating a fuel tank of an internal combustion engine in particular of a fuel tank of an internal combustion engine of a motor vehicle includes an activated carbon filter and at least one valve which is controllable by a control unit. To prevent leakage of hydrocarbons into the environment without enlargement of the activated carbon filter the control unit controls the valve in dependence on a load factor of the activated carbon filter and/or in dependence on an operating cycle duration of the internal combustion engine. | 07-05-2012 |
20120174894 | Fuel system and method for operating a fuel system - A fuel system, in particular of a motor vehicle, with a fuel tank and a ventilation device for ventilating the fuel tank, wherein the ventilation device has at least one separation device which has a temporary accumulator for liquid fuel. The separation device has a fill level determination device for determining the fill level of in the temporary accumulator. The invention further relates to a method for operating a fuel system. | 07-12-2012 |
20120175379 | FUEL SYSTEM - A fuel system in particular of a motor vehicle, includes a fuel tank and a ventilation device for ventilating the fuel tank, wherein the ventilation device has at least one separation device which has a temporary accumulator for liquid fuel, and wherein the separation device has a fuel delivery device for delivering fuel out of the temporary accumulator. The fuel delivery device is integrated in the separation device. | 07-12-2012 |
20120179354 | Method and device for controlling the pressure inside a fuel tank - A method for controlling the pressure inside a fuel tank of an internal combustion engine of a motor vehicle includes relieving the pressure in the fuel tank when reaching a predetermined upper overpressure threshold value. In a device for controlling the pressure in the fuel tank, the pressure in the fuel tank is only relived partially, wherein the pressure relief is less than 20%, preferably less than 10% and optimally less than 5% of the upper overpressure threshold value in order to reduce the emission of volatile hydrocarbons into the environment. | 07-12-2012 |
20120180760 | Method for operating a fuel system, and fuel system - In a method for operating a fuel system of an internal combustion engine, the fuel system has a fuel tank and a ventilation device for ventilating the fuel tank which has at least one ventilation valve. In a first operating mode the ventilation valve is adjusted for ventilating the fuel tank based exclusively on a temperature and/or the ventilation occurs over a defined period of time when the internal combustion engine is deactivated. The invention further relates to a fuel system of an internal combustion engine. | 07-19-2012 |
20120180767 | Fuel system - A fuel system, in particular of a motor vehicle, includes a fuel tank and a ventilation device for ventilating the fuel tank, wherein the ventilation device has at least one separation device which has a temporary accumulator for liquid fuel and a fuel delivery device which is configured as jet pump for delivering fuel out of the temporary accumulator. In an operating medium line of the jet pump a pressure reducing element or a pressure adjustment element is provided. | 07-19-2012 |
20120186670 | Device for ventilating and aerating a fuel tank - A device for ventilating and aerating a fuel tank includes with a tank shut-off valve and two tank pressure control valves. One of the tank pressure control valves opens in response to a negative pressure in the fuel tank and the other one of the tank pressure control valves opens in response to an overpressure in the fuel tank. The opening pressures of the two tank pressure control valves are adjustable flexibly and independent of the respective other valve. | 07-26-2012 |
20120234074 | MEASUREMENT DEVICE AND METHOD FOR DETERMINING A FLUID FILL LEVEL IN A FUEL TANK - The invention relates to a measurement device ( | 09-20-2012 |
20140137948 | METHOD FOR OPERATING A FUEL SYSTEM, AND FUEL SYSTEM - In a method for operating a fuel system of an internal combustion engine, the fuel system has a fuel tank and a ventilation device, which has at least one vent valve, for ventilating the fuel tank. The magnitude of deformation caused by an internal pressure of the fuel tank of a deformation zone of the fuel tank is ascertained and the vent valve is opened when the magnitude of deformation exceeds a limit value. | 05-22-2014 |
20140216420 | METHOD FOR OPERATING A FUEL SYSTEM AND FUEL SYSTEM - The invention relates to a method for operating a fuel system ( | 08-07-2014 |