Patent application number | Description | Published |
20090024302 | Procedure for the operation of an internal combustion engine - Procedure for the operation of an internal combustion engine, particularly a gasoline engine with direct gasoline injection and controlled self-ignition, whereby the internal combustion engine ( | 01-22-2009 |
20090101110 | METHOD AND DEVICE FOR ASCERTAINING A CYLINDER PRESSURE FEATURE - A method for determining one or more cylinder pressure features for setting the combustion position in an internal combustion engine includes ascertaining a curve of a cylinder pressure or a curve of a cylinder pressure gradient with respect to a crankshaft angle, filtering the curve of the cylinder pressure or the curve of the cylinder pressure gradient using a filter, in order to eliminate a component of a pressure fluctuation brought about by the piston movement in the combustion chamber, and determining at least one cylinder pressure feature from the filtered curve. | 04-23-2009 |
20090105930 | METHOD AND DEVICE FOR OPERATING AN INTERNAL COMBUSTION ENGINE - In order to operate an internal combustion engine, a fresh-air quantity, a residual-gas quantity and a fuel quantity are provided as a function of a load demand. During a change of load from a first to a second load demand, provision is made for the residual-gas quantity to first be provided according to the first load demand and for the fuel quantity to first be provided according to the second load demand. | 04-23-2009 |
20090182483 | Method and device for controlling a self-igniting internal combustion engine - A method for controlling a self-igniting internal combustion engine includes: specifying a target combustion position; determining at least one actual combustion position of at least one cycle of the internal combustion engine; specifying a computing model for calculating a following combustion position as a function of the at least one actual combustion position; calculating the following combustion position using the computing model; comparing the calculated following combustion position with the specified target combustion position; and determining at least one operating quantity for operating the internal combustion engine for at least one cycle as a function of the comparison of the calculated following combustion position with the specified target combustion position. | 07-16-2009 |
20090182485 | METHOD FOR REGULATING AN INTERNAL COMBUSTION ENGINE, COMPUTER PROGRAM AND CONTROL UNIT - A method for regulating an internal combustion engine that is operable, at least in a part-load range, in an operating mode with auto-ignition and a combustion process of which is influenced by a manipulated variable, the method includes the steps of determining a desired value of a combustion position feature of the combustion process; determining the manipulated variable by predictive closed-loop control based on a modeling of the combustion position feature as a function of the manipulated variable in the combustion process; and determining, as the manipulated variable, a value at which the difference between the desired value of the combustion position feature and a model-based predicted combustion position feature is minimized. | 07-16-2009 |
20090187325 | METHOD FOR CONTROLLING A COMPRESSION-IGNITION INTERNAL COMBUSTION ENGINE AND CONTROL DEVICE FOR CONTROLLING A COMPRESSION-IGNITION INTERNAL COMBUSTION ENGINE - A method for controlling a compression-ignition internal combustion engine includes the following steps: predefining a setpoint combustion point for the compression-ignition internal combustion engine, predefining a calculation model for calculating a probable deviation of a future cycle of the internal combustion engine from the predefined setpoint combustion point while taking an ascertained actual combustion point of a completed cycle of the internal combustion engine into consideration, predefining a mean deviation for the internal combustion engine, operating the internal combustion engine for a first cycle and ascertaining an actual combustion point of the first cycle, calculating a probable deviation of a second cycle, which occurs after the first cycle, of the internal combustion engine from the predefined setpoint combustion point, comparing the calculated probable deviation of the second cycle to the predefined mean deviation, and ascertaining at least one operating variable for operating the internal combustion engine at least during the second cycle as a function of the comparison. In addition, a control device for controlling a compression-ignition internal combustion engine is described. | 07-23-2009 |
20090222231 | Method and device for correcting a signal of a sensor - A method and a device for correcting a signal of a sensor provide for maximally accurate drift compensation of a characteristics curve of the sensor. At least one characteristic quantity of the signal of the sensor is compared with a reference value. The signal of the sensor is corrected as a function of the comparison result. A value of the at least one characteristic quantity of the signal of the sensor derived from the signal of the sensor is formed as the reference value. | 09-03-2009 |
20090281708 | PROCEDURE AND DEVICE FOR DETERMINING THE COMPOSITION OF A FUEL MIXTURE - The procedure and device of the present disclosure enable an accurate determination of the composition of the fuel mixture at a self-igniting combustion engine on the basis of present sensor signals. The procedure and device of the present disclosure furthermore enable the detection and compensation of a combustion that is unstable due to the composition of the fuel mixture. | 11-12-2009 |
20090299608 | METHOD AND CONTROL DEVICE FOR CALIBRATING A FUEL INJECTOR OF AN INTERNAL COMBUSTION ENGINE; COMPUTER PROGRAM AND COMPUTER PROGRAM PRODUCT - A method and a device, a computer program and a computer program product for implementing a method for calibrating a fuel injector of an internal combustion engine, including the following: a) Specifying a first relationship between an injection quantity and an actuating variable of the fuel injector for implementing the injection quantity, b) Specifying a setpoint injection quantity, c) Specifying at least one setpoint value for the actuating variable of the fuel injector according to the first relationship, or implementing the setpoint injection quantity, d) Determining an indicated work resulting from the implementation of the at least one setpoint value for the actuating variable, e) Comparing a variable as a function of the determined resulting indicated work to an expected value, f) Correcting the at least one setpoint value for the actuating variable of the fuel injector as a function of the comparison result. | 12-03-2009 |
20100116252 | Method and control unit for operating an injection valve - In a method for operating an injection valve, in particular a fuel injector of an internal combustion engine of a motor vehicle, one component of the injection valve, particularly a valve needle, is disposed in a manner allowing movement relative to other components of the injection valve, and preferably is able to be driven at least partially by an actuator. A structure-borne-noise signal is detected by a structure-borne-noise sensor, and the structure-borne-noise signal is evaluated in order to infer an operating state of the movably disposed component. | 05-13-2010 |
20100121555 | METHOD AND DEVICE FOR OPERATING A COMBUSTION ENGINE - A method for setting a combustion in a combustion engine, particularly in a diesel engine, having the following steps of generating a manipulated variable, particularly a point of injection (PI), as a function of a combustion feature (MFB50%), the combustion feature (MFB50%) representing a condition in cylinder, especially a pressure characteristic in the cylinder, and setting the combustion in cylinders of the combustion engine with the aid of the manipulated variable, the manipulated variable further being generated as a function of a correction value (CV), which is determined as a function of combustion information (dQ | 05-13-2010 |
20110041787 | METHOD FOR COMPENSATING FOR GAS EXCHANGE LOSSES BETWEEN COMBUSTION CHAMBERS OF AN OTTO ENGINE - A method is presented for compensating for combustion chamber-specific actual values of a parameter, which characterizes combustions, between a plurality of combustion chambers of an Otto engine ( | 02-24-2011 |
20120271536 | METHOD AND DEVICE FOR RECOGNIZING UNCONTROLLED COMBUSTIONS IN AN INTERNAL COMBUSTION ENGINE - A method for recognizing uncontrolled combustions in an internal combustion engine which occur independently of the ignition by a spark plug. The pressure oscillations in the combustion chamber triggered by the combustion are detected and evaluated. To allow identification at any time of an uncontrolled combustion prior to ignition by the spark plug and/or prior to the normal combustion initiation for a given ignition point, the rotational speed of a crankshaft of the internal combustion engine which is influenced by the pressure oscillations, is evaluated. | 10-25-2012 |
20120296554 | Method for operating an internal combustion engine - A method for operating an internal combustion engine in which a speed-based feature of the internal combustion engine, which is correlated with an indicated mean effective pressure of the fuel, is determined during the warm-up of the internal combustion engine and an ideal fuel quantity, which is to be injected into at least one combustion chamber of the internal combustion engine during the warm-up, is ascertained therefrom. | 11-22-2012 |
20130054113 | METHOD FOR CONTROLLING AIR SYSTEM STATES IN AN INTAKE MANIFOLD OF AN INTERNAL COMBUSTION ENGINE - A method for controlling at least one air system state in an intake manifold of an internal combustion engine, at least one control variable which influences the at least one air system state being predefined with the aid of an actuator; at least one control variable limitation of the actuator is taken into account in the control. | 02-28-2013 |
20130054117 | Method for regulating HCCI combustion in a reactor of an internal combustion engine - A method for regulating HCCI combustion of fuel in a reactor of an internal combustion engine is described in which a multivariable regulation is used, manipulated variable changes Δuk for the instantaneous regulating cycle k being determined on the basis of at least system deviations Δx | 02-28-2013 |
20130238223 | METHOD AND DEVICE FOR RECOGNIZING PRE-IGNITIONS IN A GASOLINE ENGINE - A method for recognizing pre-ignitions in a gasoline engine which occur in the combustion chamber of the gasoline engine, independently of the ignition of a fuel-air mixture by a spark plug. In a method which reliably recognizes the formation of sporadically imminent pre-ignitions, a combustion chamber pressure which occurs prior or subsequent to the ignition point of the spark plug is evaluated for determining the pre-ignition. | 09-12-2013 |
20130306034 | METHOD AND DEVICE FOR ACTUATING AN INJECTOR IN A FUEL INJECTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE - A device and a method for actuating an injector in a fuel-injection system of an internal combustion engine are described. Using a first calibration method and based on a control parameter, an injector parameter which characterizes the injection process is determined. Starting from this injector parameter, a first feature is determined for calibrating the injector. A second calibration method determines a second feature for calibrating the injector, based on an engine parameter. The first calibration method is monitored on the basis of the second feature. | 11-21-2013 |
20130338905 | METHOD AND DEVICE FOR CONTROLLING A SPARK IGNITION ENGINE IN THE AUTO-IGNITION OPERATING MODE - A method for operating an internal combustion engine in HCCI mode, including: a) sensing a profile of a measured variable of a variable in a combustion chamber of a cylinder; b) identifying combustion feature(s) of a combustion event in a first combustion cycle based on the profile; c) modeling a first value of a state variable at a defined point in time after the first combustion cycle and before a second subsequent combustion cycle based on the identified combustion feature(s); d) determining desired target values of combustion feature(s) of a combustion event in the second subsequent combustion cycle; e) modeling a second value of the state variable at the defined point in time based on the target values; and f) applying control to the internal combustion engine starting at the defined point in time as a function of the first and the second value of the state variable. | 12-19-2013 |
20140236452 | METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE - A method for operating an internal combustion engine is described. A base controlled variable for influencing an actual value of an operating variable of the internal combustion engine is ascertained. The actual value of the operating variable is compared to a setpoint value of the operating variable. A correcting variable is ascertained as a function of the comparison. A controlled variable is ascertained as a function of the base controlled variable and as a function of the correcting variable. An actual value of a state variable of the internal combustion engine is ascertained. A start point in time of a time interval of a critical state change of the internal combustion engine is ascertained as a function of the ascertained actual value of the state variable. The controlled variable is essentially ascertained from an intermediate controlled variable and a correcting variable following the start point in time. | 08-21-2014 |
20140309972 | METHOD AND CONTROL FOR CARRYING OUT A CALCULATION OF A DATA-BASED FUNCTION MODEL - A method for carrying out a calculation of a data-based function model, in particular a Gaussian process model, the data-based function model being defined by predefined hyperparameters and node data, multiple input variables being assigned to one output variable and having a sum of terms, each of which depend on one of the input variables, including the following: determining at least one input variable to be varied, for which multiple output values of a corresponding output variable are to be determined; calculating the sum of the terms, which depend on the input variables not to be varied; providing multiple input values for each of the determined at least one input variable to be varied; and ascertaining multiple output values of the output variable for the provided multiple input values, each based on the calculated sum of the terms, which depend on the input variables not to be varied. | 10-16-2014 |
20140309973 | Method and control for calculating a data-based function model - A method for carrying out a calculation of a data-based function model in a control unit having a computing unit and a separate model calculation unit having a computing core, including: loading a first part of the configuration data, which contain hyperparameters of the data-based function model and a first part of supporting point data having multiple supporting points, into the model calculation unit; starting a calculation in the computing core of the model calculation unit, to obtain a model value at a predefined test point; and transferring a second part of the configuration data, which contain a second part of the supporting point data having multiple supporting points, into the model calculation unit, prior to the completion of the calculation in the computing core of the model calculation unit. | 10-16-2014 |
20140310325 | MODEL CALCULATION UNIT, CONTROL UNIT AND METHOD FOR CALIBRATING A DATA-BASED FUNCTION MODEL - A model calculation unit for calculating a data-based function model in a control unit is provided, the model calculation unit having a processor core which includes: a multiplication unit for carrying out a multiplication on the hardware side; an addition unit for carrying out an addition on the hardware side; an exponential function unit for calculating an exponential function on the hardware side; a memory in the form of a configuration register for storing hyperparameters and node data of the data-based function model to be calculated; and a logic circuit for controlling, on the hardware side, the calculation sequence in the multiplication unit, the addition unit, the exponential function unit and the memory in order to ascertain the data-based function model. | 10-16-2014 |
20140351309 | FMA UNIT, IN PARTICULAR FOR UTILIZATION IN A MODEL COMPUTATION UNIT FOR PURELY HARDWARE-BASED COMPUTING OF FUNCTION MODELS - An FMA unit, for carrying out an arithmetic operation in a model computation unit of a control unit, is configured to process input of two factors and one summand in the form of floating point values, and provide a computation result of such processing as an output variable in the form of a floating point value. The FMA unit is designed to carry out a multiplication and a subsequent addition, the bit resolutions of the inputs for the factors being lower than the bit resolution of the input for the summand and the bit resolution of the output variable. | 11-27-2014 |
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 |
20150012574 | Model calculation unit and control unit for calculating a data-based function model having data in various number formats - A model calculation unit for calculating a data-based function model, in particular a Gaussian process model, in a control unit, including: a processor core to carry out a strictly hardware-based calculation of an algorithm for a data-based function model, the data-based function model being calculated using provided calculation data, in particular hyperparameters and node data; and a strictly hardware-based conversion unit to provide the processor core with at least a portion of the calculation data, in particular the provided node data, in a predefined number format. | 01-08-2015 |
20150012575 | Method for operating a control unit and a control unit having a model calculation unit - A method for operating a control unit, the control unit including a software-controlled main processing unit, a strictly hardware-based model calculation unit for calculating an algorithm, for carrying out a Bayesian regression method, based on configuration data, and a memory unit, a model memory area being defined in the memory unit to which a configuration register block for providing the configuration data in the model calculation unit is assigned, a calculation start-configuration register being assigned the highest address in the configuration register block into which configuration data are written, the writing into of which starts the calculation in the model calculation unit, the configuration data being written in a memory area of the memory unit from the model memory area into the configuration register block with an incremental copying process, the addresses being copied in the incremental copying process in ascending order. | 01-08-2015 |
20150068493 | METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE IN AN IDLE MODE - A method for operating an internal combustion engine in an idle mode, in which an ignition angle and/or an air quantity of the internal combustion engine is influenced and/or is modified as a function of an idle rotation speed of the internal combustion engine. The ignition angle and/or the air quantity and/or a fuel quantity for at least one combustion chamber of the internal combustion engine is modified as a function of at least one variable characterizing a combustion event in the combustion chamber. | 03-12-2015 |