Patent application number | Description | Published |
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 |
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 |
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 |
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 |
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 |