Patent application number | Description | Published |
20080196482 | Method and Apparatus For Detecting Tank Leaks - Method and apparatus for detecting tank leaks, in which a gas pressure acts on a fluid which is situated in a tank, and in which the gas pressure in the tank or tank system is changed, wherein a tank leak is detected by evaluation of a temporal profile of a sum pressure of the fluid which is situated in the tank. | 08-21-2008 |
20080216787 | Method for starting an internal combustion engine - To achieve a reliable and exhaust-optimized combustion starting already from the beginning of a combustion phase in the startup of an internal combustion engine, the internal combustion engine is brought to a target speed by an electric motor in a drag phase, the target speed being higher than the previously known starting speed. The target speed corresponds approximately to an idling speed assigned to the internal combustion engine, for example. After exceeding the starting speed, first a mixture enrichment is determined, taking into account a prevailing state of a wall film here in particular. Only after reaching the target speed is the fuel metered and does the combustion take place in the combustion phase. The fuel is metered here in particular on the basis of the mixture enrichment determined after exceeding the starting speed. | 09-11-2008 |
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 |
20090063005 | METHOD FOR DETERMINING THE COMPOSITION OF A FUEL BLEND - The invention relates to a method for determining the composition of a fuel blend from a first and at least a second fuel to operate an internal combustion engine with at least one combustion chamber, wherein fuel blends of different composition combust at different optimal ignition angles ZW | 03-05-2009 |
20090173557 | DEFINED INTERNAL COMBUSTION ENGINE OPERATION IN VEHICLES HAVING A HYBRID DRIVE - A method for setting operating states of an internal combustion engine, in particular an internal combustion engine of a hybrid drive. In addition to the internal combustion engine, the hybrid drive includes at least one electric drive, a hybrid coordinator and a control unit assigned to the internal combustion engine in which functions are implemented. The functions request operating states favorable to their running ability from the hybrid coordinator which performs a commensurate modification of the distribution of power between the internal combustion engine and the at least one electric drive. | 07-09-2009 |
20100024528 | PROCEDURE AND DEVICE FOR DETERMINING THE VAPOR PRESSURE OF A FUEL - A procedure for determining the vapor pressure of a fuel in a tank is provided, whereby the sound velocity and/or a variable representing the sound velocity are determined the in the gas-filled compartment of the tank and the vapor pressure is assumed from the sound velocity and/or from the variable representing the sound velocity at a familiar total pressure. | 02-04-2010 |
20100198486 | METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE - The invention relates to a method for operating an internal combustion engine, which can be operated with fuels and fuel mixtures of said fuels, said fuels differing from each other in the air quantity they require for a stoichiometric combustion. A fuel quantity to be supplied to the internal combustion engine is corrected via a mixture adaptation and a fuel adaptation, the mixture adaptation and the fuel adaptation being based on a lambda control and a fuel quantity contained in the fuel reservoir of the internal combustion engine prior to refueling and a fuel quantity supplied to the reservoir being determined. The method is characterized by using the change of the fuel adaptation after refueling towards a fuel/air mixture having a higher or a lower fuel percentage to extrapolate the supplied fuel or the supplied fuel mixture and the fuel quantity present in the reservoir and the knowledge of the nature of the fuel or the fuel mixture supplied to the reservoir are used to calculate the fuel mixture ration in the reservoir after refueling. The method according to the invention allows determination of the fuel mixture ratio in the reservoir of internal combustion engines which can be operated with different fuels. | 08-05-2010 |
20100236638 | VALVE CONTROL WHEN REFUELING PRESSURE TANKS - A device for capturing a refueling process is described, in which the device has a pressure signal input that is equipped to receive a pressure signal, which reproduces the pressure in a tank; a comparator that is equipped to compare a capturing signal to at least one minimum value; and includes a status output that is connected to the comparator. The status output is equipped to emit a refueling signal when the received capturing signal is more than the minimum value. The refueling signal indicates that the refueling process is taking place. The capturing signal corresponds to the pressure signal and/or the first time derivative of the pressure signal. Also described is a controller, a corresponding control method and the use of a tank pressure sensor, which include each of the features of the device and the method. | 09-23-2010 |
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 |
20110178674 | METHOD FOR DETECTING LEAKS IN A TANK SYSTEM - The invention relates to a method for preparing models of technical devices, wherein each technical device comprises units that are connected to each other by means of connection point, wherein, when performing the method, at least one structure made of units connected to each other by means of connection points comprising commonalities for all technical devices is integrated and automatically described as at least one common module ( | 07-21-2011 |