Patent application number | Description | Published |
20090093948 | METHOD FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE - A method for controlling an internal combustion engine of a motor vehicle with an injection quantity correction unit is disclosed. The method includes the use of an electronic control device for controlling the internal combustion engine in a motor vehicle, for fault recognition with an irregular running determination unit and with an injection quantity correction unit, a defined group of cylinders being associated with a lambda probe, the injection quantity of a cylinder to be investigated of the defined group is adjusted in the direction of lean by a differential adjustment value associated with an irregular running differential value, and the injection value of at least one of the remaining cylinders, which are associated with the same lambda probe, is correspondingly adjusted in the direction of rich, so that in total a predetermined lambda value of this group of at least approximately 1 is reached. Homogeneous operation is thus ensured. The differential adjustment values may, for example, relate to the injection quantity itself, the injector stroke or the injection time. In this manner, a differential adjustment value individual to the cylinder is adjusted for each cylinder of the defined group. Correction values individual to the cylinder are then determined in that the differential adjustment values individual to the cylinder are related to one another. The correction values individual to the cylinder are compared for fault recognition with at least one threshold value. | 04-09-2009 |
20150219031 | Method For Operating an Internal Combustion Engine - A mixture pilot control for operating an internal combustion engine, in particular a gasoline engine of a motor vehicle, is provided. The mixture pilot control determines at least one composition of an air-fuel mixture required for a predetermined target air-fuel mixture ratio. The internal combustion engine is also provided with a lambda control with at least one lambda probe arranged in the exhaust gas flow of the internal combustion engine for determining a deviation of the actual air-fuel ratio from the predetermined target air-fuel ratio. Operating-parameter-dependent correction factors for the composition of the air-fuel mixture by the mixture pilot control are determined in dependence on the lambda control deviation, at least one of the load and/or the rotational speed and/or the temperature of the internal combustion engine, and further operating parameters of the vehicle other than the load, rotation speed or temperature of the internal combustion engine. | 08-06-2015 |
Patent application number | Description | Published |
20120224957 | Pump and Flow-Guiding Device - A flow-guiding device for an impeller radial pump is arranged radially outside the impeller and extends in a ring-shaped manner with a circumferential carrier ring on which several guide blades are arranged. These latter are formed so as to be resilient in such a manner that when there is a small fluid flow a blade angle points more in the radial direction at an angle of approximately 70° with respect to the longitudinal center axis of the pump. When there is strong fluid flow, the angle becomes smaller and the guide blades bend in a resilient manner at least in regions such that they stand at a smaller angle of between 30° and 40° with respect to the longitudinal center axis of the pump. The fluid is conveyed better in the pump chamber in this way. | 09-06-2012 |
20120224959 | Latching Device for a Pump Housing and Pump - A latching device for a pump housing for production of a releasable latched connection between two housing parts has, on a first housing part, an elongate latching hook comprising a latching protrusion on the upper side and introduction chamfers on the upper side and on the underside. A latching opening is provided in the second housing part and comprises a latching tongue defining the latching opening outwardly, the latching protrusion abutting this latching tongue. An introduction web is arranged on the underside of the latching opening and comprises an introduction chamfer for the latching hook. Two securing tongues engage laterally in the latching opening and protrude via a free tongue end into the path of the latching hook when said latching hook is inserted into the latching opening. They prevent an undesired automatic release of the latched connection caused by movement of the latching hook in a downwards direction. | 09-06-2012 |
20120224961 | Pump - A pump for a dishwasher has an impeller for conveying fluid, wherein it is formed as a centrifugal pump with the fluid to be conveyed being sucked-in in a central axial manner and flowing out in a radial manner. The impeller extends on a bottom surface above a pump base, wherein several fixed flow directing blades are arranged radially outside the impeller, said flow directing blades extending in a helicoidal manner with the pitch extending in the rotational direction of the impeller away from the pump base. At least one flow directing blade extends as far as up to the bottom surface of the impeller for picking up a circulating funnel or tube produced of fluid with air bubbles therein. | 09-06-2012 |
20130022455 | Pump - A radial pump for fluids has a central water inlet that leads to a rotating impeller that is enclosed by an annular pump chamber extending radially outside the impeller and from which leads a water outlet. An intermediate wall is arranged in the pump chamber which is of an encompassing design and divides the pump chamber into an annular inner region, lying radially on the inside, and an annular outer region, lying radially on the outside. These regions, at one end of the pump chamber that is remote from the impeller, merge into each other through openings in the intermediate wall, wherein the water outlet projects from the outer region. | 01-24-2013 |