| Patent application number | Description | Published |
|---|
| 20080199016 | Method for ascertaining the noise emission of an internal combustion engine - Methods for ascertaining the combustion noises of an internal combustion engine need only a structure-borne noise sensor and may be carried out using little computing power. | 08-21-2008 |
| 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 |
| 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 |
| 20090182484 | METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE, COMPUTER PROGRAM AND CONTROL UNIT - A method for operating an internal combustion engine, especially an internal combustion engine that is operable, at least in a part-load range, in an operating mode with auto-ignition, in which, at an abrupt change in load and/or at a changeover between an operating mode with auto-ignition and an operating mode without auto-ignition, a parameter of the combustion process correlating with the combustion noise is adapted stepwise over a plurality of combustion cycles from a first parameter value before the abrupt change in load or the changeover to a second parameter value after the abrupt change in load or the changeover, by influencing a combustion position of the combustion process. | 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 |
| 20090259385 | Method and engine control unit for controlling an internal combustion engine - A method for controlling an internal combustion engine includes: providing a setpoint value of at least one combustion attribute on the basis of a setpoint value characteristics map; determining from a control variable characteristics map a value of a characteristics-map-based control variable for controlling the engine; ascertaining with the aid of a data-based model a value of a modified control variable for controlling the engine, the data-based model specifying a predicted combustion attribute as a function of a real value of the combustion attribute of the preceding combustion, and the value of the modified control variable for controlling the engine being ascertained from the predicted combustion attribute; and providing a real control variable set to a value that is a function of the value of the characteristics-map-based control variable and/or the value of the modified control variable. | 10-15-2009 |
| 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 |
| 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 |
