Patent application number | Description | Published |
20080264156 | PROCEDURE FOR DIAGNOSING A FUEL TANK VENTILATION SYSTEM OF A VEHICLE AND DEVICE FOR IMPLEMENTING THE PROCEDURE - A procedure for diagnosing a tank system of a vehicle with at least two controllable tank ventilation valves, with at least two points of release for a tank ventilation mixture, whereby at least a first point of release runs into an inlet manifold of a combustion engine downstream of a throttle device and at least a second point of release is arranged in an inlet manifold of the combustion engine upstream of the throttle device, especially upstream of a compressor, is thereby characterized, in that for diagnosing the functionality of the tank ventilation system the at least two tank ventilation valves are controlled independently of each other and its functionality can be implied due to the pressure that occurs in the tank system. | 10-30-2008 |
20100263730 | METHOD AND DEVICE FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE - A method and a device for controlling a fuel-operated internal combustion engine of a motor vehicle having a tank venting system associated with a fuel tank and having at least two operating states, in which the internal combustion engine is shut off automatically according to a shut-off strategy. The shut-off strategy takes into account the instantaneous operating state of the tank venting system. | 10-21-2010 |
20100305828 | METHOD FOR CHECKING THE OPERATIONAL CAPABILITY OF A FUEL TANK VENTILATION VALVE - A method for checking the operational capability of a fuel tank ventilation valve ( | 12-02-2010 |
20110067487 | Method for testing the operability of a tank shutoff valve of a fuel tank system - A method for testing the operability of a tank shutoff valve of a fuel tank system which is controlled by valves includes performing defined triggering of the tank shutoff valve and simultaneous introduction of an overpressure or partial vacuum into the fuel tank system via a pressure source, and the operability of the tank shutoff valve is determined on the basis of a variable which characterizes the introduction of the overpressure or partial vacuum. | 03-24-2011 |
20110100210 | DIAGNOSIS OF THE OPERABILITY OF FUEL VAPOUR INTERMEDIATE STORES - A method is provided for diagnosing the operability of fuel vapor intermediate stores ( | 05-05-2011 |
20130319378 | VENTING SYSTEM, IN PARTICULAR FOR A FUEL TANK - In a venting system, in particular for a fuel tank of a motor vehicle, which has a sorption filter for temporarily storing fuel evaporating from the fuel tank and a fluid-conveying conveying device situated between the sorption filter and an air supply or an intake manifold of an internal combustion engine, according to the present system, the conveying device is a bidirectional conveying device which is switchable in a first conveying direction in the direction of the internal combustion engine for regenerating the sorption filter and in a second conveying direction in the direction of the sorption filter for carrying out a fuel tank leak diagnosis. | 12-05-2013 |
20140013944 | DEVICE FOR SELECTIVELY REGENERATING OR PERFORMING TANK LEAKAGE DIAGNOSIS OF A TANK VENTILATION SYSTEM - A device for selectively regenerating and performing tank leakage diagnosis of a tank ventilation system has a sorption filter and a pump. The sorption filter is configured to temporarily store fuel evaporating from a fuel tank. The pump is arranged at a fresh-air side of the sorption filter and is connected in fluid-conducting fashion to the sorption filter. The pump is configured to generate a fluid flow to regenerate the sorption filter. | 01-16-2014 |
20140052361 | METHOD FOR OPERATING A FUEL VAPOR RECIRCULATION SYSTEM IN A MOTOR VEHICLE - A method for operating a fuel vapor recirculation system in a motor vehicle having a fuel tank. In the method, in the operating strategy of the fuel vapor recirculation system, predictive route data of the motor vehicle are taken into account. | 02-20-2014 |
20140109882 | METHOD FOR MONITORING THE LEAK TIGHTNESS OF A FUEL TANK SYSTEM - A method for monitoring the leak tightness of a fuel tank system is provided, the fuel tank system being provided for supplying fuel to a supercharged internal combustion engine. A pressure accumulator is filled from the supercharged intake manifold area of the internal combustion engine. The pressure from the pressure accumulator is transferred to the fuel tank system, which includes in particular the fuel tank and, if necessary, an activated carbon filter. The pressure curve in the closed fuel tank system is observed. A leak in the fuel tank system may be inferred on the basis of the pressure curve, if necessary. | 04-24-2014 |
20140373813 | VENTING A FUEL TANK BY MEANS OF A FUEL SUPPLY PATH AND AN AIR SUPPLY PATH OF AN INTERNAL COMBUSTION ENGINE - The invention relates to a system ( | 12-25-2014 |