Patent application number | Description | Published |
20110144927 | Method for real time capability simulation of an air system model of an internal combustion engine - The present invention relates to a method for determining at least one air system variable in an air supply system ( | 06-16-2011 |
20130060450 | Method and device for performing a control, in particular for use in a motor vehicle - A method for operating a boost pressure control in an engine system having a supercharged internal combustion engine, including the following: performing a boost pressure control based on a setpoint controller variable and an actual controller variable, ascertaining a setpoint controller variable from a provided setpoint boost pressure with a first and a second model, ascertaining an intermediate variable from a provided actual boost pressure with the first model, correcting the intermediate variable with a provided dynamic variable, which represents a dynamic change in the state of the engine system using a higher dynamics than the actual boost pressure, and ascertaining the actual controller variable from the corrected intermediate variable with the second model. | 03-07-2013 |
20130158834 | METHOD AND DEVICE FOR ASCERTAINING A MODELING VALUE FOR A PHYSICAL VARIABLE IN AN ENGINE SYSTEM HAVING AN INTERNAL COMBUSTION ENGINE - A method for determining a modeling value of a physical variable in a gas guiding section of an engine system including an internal combustion engine, includes the following steps: operating the engine system in such a way that an air mass flow is present in the gas guiding section; determining instantaneous values of other physical variables; and determining the modeling value of the physical variable by solving a differential equation, which results as the discretization of a differential equation, with the aid of the previously ascertained instantaneous values of the other physical variables. | 06-20-2013 |
20130325294 | method and device for carrying out an adaptive control of a position of an actuator of a position transducer - A method for operating a controller for a position transducer system, of a throttle valve position transducer in an engine system having an internal combustion engine, the control being performed to obtain a manipulated variable for triggering an actuating drive of the position transducer system, the control being performed by initially applying a transfer function to a system deviation to obtain an adapted system deviation and subsequently applying a transfer function to the adapted system deviation to obtain the manipulated variable, the transfer function being a function which indicates a deviation of a model of a nominal position transducer system having predefined nominal parameters from the model of the position transducer system to be controlled, an adaptation of the control process being performed by adapting the transfer function, in that the parameters of the model of the position transducer system to be controlled are adapted, in particular in real time. | 12-05-2013 |
20130325384 | METHOD AND DEVICE FOR ASCERTAINING A PHYSICAL VARIABLE IN A POSITION TRANSDUCER SYSTEM - A method for ascertaining a value of a physical variable in a position transducer system includes the steps of providing a computation model, which maps a response of the position transducer system, wherein the computation model includes a model function and one or multiple parameter(s); ascertaining a value of at least one system variable at one or multiple points in time; determining the parameters of the computation model from one or multiple value(s) of the at least one system variable determined at different points in time; and determining the value of the physical variable as a function of the one or the multiple determined parameters. | 12-05-2013 |
20130325421 | Method and device for monitoring an actuator system - A method for monitoring an actuator in a physical system, including: providing a computer model that describes the actuator, the behavior of the actuator being represented by a computer model function and by one or more parameters (α, μ, κ, β, γ, δ, η) of the computer model function; determining or adapting the values of the parameters (α, μ, κ, β, γ, δ, η) of the computer model with the aid of one or more particular system quantities; determining an error when a specified error condition is fulfilled, the error condition defining when at least one of the parameters (α, μ, κ, β, γ, δ, η), and/or at least one quantity determined from a plurality of the parameters (α, μ, κ, β, γ, δ, η), lies outside a corresponding specified target deviation range (S+/−Δ) for the relevant parameter (α, μ, κ, β, γ, δ, η) or the relevant quantity. | 12-05-2013 |
20130346038 | METHOD AND DEVICE FOR CREATING COMPUTATIONAL MODELS FOR NONLINEAR MODELS OF POSITION ENCODERS - A method is described for ascertaining a computational model for a position encoder system, in particular for a position encoder for controlling a gas mass flow rate for an internal combustion engine, having the following steps: providing a differential equation system with at least one nonlinear term; dividing the differential equation system to obtain a linear part which is describable by a linear differential equation and a nonlinear part which is describable by a nonlinear differential equation; discretizing the linear part of the differential equation system with the aid of a first discretization method to obtain a computational model for the discretized linear part; discretizing the nonlinear part of the differential equation system with the aid of a second discretization method to obtain a computational model for the discretized nonlinear part; combining the computational models of the discretized linear part and the discretized nonlinear part of the differential equation system to obtain the computational model for the position encoder system. | 12-26-2013 |
Patent application number | Description | Published |
20080198757 | MECHANISM AND SYSTEM FOR PROGRAMMABLE MEASUREMENT OF AGGREGATE METRICS FROM A DYNAMIC SET OF NODES - A method for measuring performance of system. The method includes the steps of retrieving a metric definition from a declarative metrics specification, obtaining a list of computing nodes from a database that are currently assigned to the metric definition, obtaining resource data provided by the computing nodes in the list of computing nodes and determining the metric of system performance based on the metric definition and the resource data. The computing nodes in the list of computing nodes are nodes of a cluster of nodes having a dynamically varying node count. | 08-21-2008 |
20080263177 | METHOD AND COMPUTER SYSTEM FOR SELECTING AN EDGE SERVER COMPUTER - Media Distribution within the Internet is done with the help of Application-Servers, Content-Servers and distributed Edge-Servers where the clients are connected to Media Distribution Services. A computer system is provided comprising client | 10-23-2008 |
20100005187 | Enhanced Streaming Operations in Distributed Communication Systems - A method and system are provided for enhancing streaming operation in a distributed communication system providing communication links between a plurality of stream servers, a client machine requesting a particular media file, and, a stream server selection unit. First, a list of stream servers is retrieved. Then, the list is evaluated and one of the stream servers is selected as the best-suited stream server. Finally, streaming from the selected stream server is initiated. | 01-07-2010 |
Patent application number | Description | Published |
20100073017 | METHOD FOR OPERATING A HEATABLE EXHAUST GAS PROBE - A method for operating an exhaust gas probe, in particular a lambda probe, in the exhaust gas of an internal combustion engine, where at least one heating element for achieving the operating temperature in the exhaust gas probe and determination of the temperature of the exhaust gas probe is performed by measuring the internal resistance. Measurement of the internal resistance occurs by the superimposition of discrete bipolar test pulses that include a pulse and a counter pulse, and by acquisition of the Nernst voltage. | 03-25-2010 |
20120041666 | METHOD FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE - A method is disclosed for controlling an internal combustion engine having a plurality of fuel injectors, each for injecting fuel into one combustion chamber of the internal combustion engine, comprising the following steps: activating the fuel injectors in order to supply a first target total fuel quantity using a first injection strategy, ascertaining a first actual total fuel quantity injected during the activation using the first injection strategy, activating the fuel injectors in order to supply a second target total fuel quantity using a second injection strategy, wherein at least one of said fuel injectors being activated differently from said first injection strategy during said second injection strategy, ascertaining a second actual total fuel quantity injected during the activation using the second injection strategy, and determining an operating behavior of at least one of the fuel injectors as a function of the first actual total fuel quantity and the second actual total fuel quantity. | 02-16-2012 |
20140033794 | Method and Device for Diagnosing Electrodes in Sensor Elements - A method for diagnosing a sensor element for detecting at least one fraction of a gas component of a gas in a measuring gas chamber, in particular a sensor element for detecting oxygen in an exhaust gas of an internal combustion engine. The sensor element includes at least one first electrode, to which the gas may be applied, and at least one second electrode, the first electrode and the second electrode being connected via at least one solid electrolyte. A diagnostic signal is applied between the first electrode and the second electrode, a response signal being detected between the first electrode and the second electrode. | 02-06-2014 |
Patent application number | Description | Published |
20090211355 | Heated Hot-Film Air-Mass Sensor - To determine air mass flows, especially for controlling internal combustion engines, a hot-film air-mass sensor is provided, which may be used especially for sensing air mass flows in the intake tract of an internal combustion engine. The hot-film air-mass sensor has a sensor chip having a sensor frame and a sensor diaphragm having at least one heating element and at least two temperature sensors. Furthermore, the hot-film air-mass sensor has a chip carrier for mounting the sensor chip, as well as at least one additional heating element. The sensor chip is able to be heated up using the at least one additional heating element, which is inserted into the chip carrier. Compared to the usual devices, the hot-film air-mass sensor has a lower susceptibility to contamination, especially by oil films. | 08-27-2009 |
20090314079 | HOT-FILM AIR MASS METER HAVING FREQUENCY-MODULATED SIGNAL DETECTION - A method for measuring an air mass flow flowing in a main flow direction, and a hot-film air mass meter by which the method is able to be realized. The method and the hot-film air mass meter are especially suitable for use in the induction tract of an internal combustion engine. The hot-film air mass meter includes a sensor chip having a chip surface across which an air mass flow is able to flow. The chip surface in turn has a measuring surface, the measuring surface including a central hot-film air mass meter circuit having at least one central heating element and at least two temperature sensors. The method is implemented so that the at least one central heating element is periodically heated using a frequency ω. With the aid of at least two temperature sensors, at least two measuring signals are detected. The measuring signals and/or at least one differential signal of the at least two measuring signals are modulated using the frequency ω. | 12-24-2009 |
20130185013 | METHOD AND DEVICE FOR ASCERTAINING A STATE OF A SENSOR - In a method for determining a state of a sensor configured to ascertain an operating parameter of an internal combustion engine, at least one aging effect which has an influence on a sensor characteristic curve of the sensor is detected. The sensor has different sensor characteristic curves for different states of the sensor. The at least one aging effect is detected during operation of the sensor. An item of aging information which reflects the at least one aging effect is stored in an electronic memory. The state of the sensor is deduced from the aging information which is present in stored form and which reflects the aging effect that has acted on the sensor. The deduction is carried out based on a predefined linkage between the at least one aging effect and the state of the sensor. | 07-18-2013 |
20140060176 | Device for detecting at least one property of a fluid medium - A device for detecting at least one property of a fluid medium has at least one sensor housing introducible into the fluid medium, which sensor housing has at least one channel through which the fluid medium flows and which has at least one outlet opening. The fluid medium flows out through the outlet opening after flowing through the channel. The sensor housing has at least one housing body and at least one cover. The outlet opening is situated in the cover. The housing body has at least one collar section, which engages with the outlet opening and which forms at least one part of an edge of the outlet opening. | 03-06-2014 |