Patent application number | Description | Published |
20110113869 | ABNORMAL COMBUSTION DETECTION METHOD FOR INTERNAL-COMBUSTION ENGINES FROM SEVERAL COMBUSTION INDICATORS - An abnormal combustion detection method is disclosed for spark-ignition internal-combustion engines, from combustion indicators. Combustion indicators, such as CA10 and MIP, are determined which are converted to new indicators having lower dispersions than those of indicators for normal combustions that are not converted. A parameter characterizing a distribution of N values of the new combustion indicators, acquired over N cycles preceding the cycle in progress, is then determined. The start of an abnormal combustion is thereafter detected by comparing this parameter with a threshold, and the course of the abnormal combustion detected in the combustion chamber is controlled. | 05-19-2011 |
20110118953 | ABNORMAL COMBUSTION DETECTION METHOD FOR INTERNAL-COMBUSTION ENGINES FROM COMBUSTION INDICATOR DISTRIBUTION MODELLING - An abnormal combustion detection method for spark-ignition internal-combustion engines, from combustion indicator distribution modelling is disclosed. At least one combustion indicator such as CA10 is determined. The distribution of N values of this indicator, acquired over N cycles preceding the cycle in progress, is modelled by determining coefficients of a theoretical distribution law. Modelling is repeated by removing extreme values from among the N values or for various working points of the engine, to obtain an evolution of the coefficients. At least one parameter characterizing evolution of at least one of these coefficients is determined. The start of an abnormal combustion is detected by comparing the parameter with a predetermined threshold, and the course of the abnormal combustion detected in the combustion chamber is controlled. | 05-19-2011 |
20130024087 | ABNORMAL COMBUSTION DETECTION AND CHARACTERIZATION METHOD FOR INTERNAL-COMBUSTION ENGINES - An abnormal combustion detection and characterization method for spark-ignition internal-combustion engines using combustion indicators is disclosed. A multidimensional space having each dimension corresponding to one of the indicators is defined and a closed surface is defined in this space to surround points corresponding to normal combustions and to not surround points corresponding to abnormal combustions. For each combustion of an engine cycle, the combustion of the cycle is represented by a point in this multidimensional space, the position of this point with respect to the surface is determined and the abnormal nature of the combustion is deduced therefrom. | 01-24-2013 |
Patent application number | Description | Published |
20120225664 | APPARATUS, AND ASSOCIATED METHOD, FOR ESTIMATING A TIME ZONE AT WHICH A DEVICE IS POSITIONED - An apparatus, and an associated method, estimates a time zone at which an electronic device, such as a wireless device, is positioned. Parameters, such as a mobile country code, a GMT offset, a daylight savings time parameter, and geo location parameters are all candidate parameters from which to make an estimate. Received parameters are identified, and selectably used to obtain an estimate that is matched or verified to ensure likely accuracy. | 09-06-2012 |
20140187262 | Apparatus, and Associated Method, for Estimating a Time Zone at Which a Device is Positioned - An apparatus, and an associated method, estimates a time zone at which an electronic device, such as a wireless device, is positioned. Parameters, such as a mobile country code, a GMT offset, a daylight savings time parameter, and geo location parameters are all candidate parameters from which to make an estimate. Received parameters are identified, and selectably used to obtain an estimate that is matched or verified to ensure likely accuracy. | 07-03-2014 |