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Data Processing: Vehicles, Navigation, And Relative Location > Vehicle Control, Guidance, Operation, Or Indication > With Indicator Or Control Of Power Plant (e.g., Performance) > Internal-combustion Engine > Digital Or Programmed Data Processor > Vibration, Roughness, Knock Vibration, Roughness, KnockVibration, Roughness, Knock patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.10/05/06 - 20060224297 - Method for evaluating engine idle roughness A method is provided for evaluating the acceptability of idle roughness levels in a newly manufactured multi-cylinder internal combustion engine. The method involves calculating a plurality of metrics based upon the relative firing energies of individual cylinders in the engine and setting threshold values for each of the metrics, below ... 09/14/06 - 20060206254 - Real-time spectral analysis of internal combustion engine knock A system for, and a method of, obtaining, for analysis, from a subject internal combustion engine, real-time engine knock data involving assessing, as a positive indication of engine knock behavior, whether the energy-content value represented in at least one selected, knock-relevant frequency-domain spectral bin which is present in a frequency-domain ... 09/07/06 - 20060200299 - Signal processing device and control unit for cooperating with a signal processing device A signal processing device and a control unit for cooperating with a signal processing device are described, the signal processing device being designed for processing knocking signals of an internal combustion engine which are provided by knocking sensors. A comprehensive check for errors is performed. The filter coefficients provided for ... 08/10/06 - 20060178802 - Sensor feedback control for noise and vibration A method of controlling noise/vibration in a vehicle having a powertrain includes sensing noise/vibration in the vehicle. An operating point of the powertrain is adjusted and a constant transmission output power is maintained to reduce the noise/vibration. ... 07/27/06 - 20060167614 - Method for detecting failed combustion in an internal combustion engine by a combination of combustion irregularity indices where {overscore (I)}(t±Δt) is an estimated value of the index I(t) at an instant (t±Δt) different from (t), c) comprising the current value of E(t) with a predetermined threshold (S) dependent on the engine load (C) and/or speed (N), and d) diagnosing a misfire when the value of E(t) exceeds ... 06/29/06 - 20060142926 - Misfire detection system for internal combustion engine In a misfire detection system for an internal combustion engine, a product is calculated at every predetermined crank angle by multiplying a value retrieved from a periodic function defined to model torque generation of individual cylinders synchronously with each combustion cycle, by a detected crank angle velocity, and the product ... 06/29/06 - 20060142925 - Internal combustion engine knock determination device An engine ECU executes a program including a step of calculating a knock intensity N as based on comparing a waveform detected as a waveform of a vibration attributed to knocking with a knock waveform model stored in a memory as a waveform of a vibration attributed to knocking for ... 06/22/06 - 20060136117 - Knock determination device for internal combustion engine An engine ECU executes a program including a step of calculating coefficient of correlation K that is a value related to a deviation between a vibration waveform and a knock waveform model by comparing the engine's vibration waveform with the knock waveform model stored in advance at a plurality of ... 06/15/06 - 20060129304 - Knock determining apparatus for internal combustion engine For each predetermined crank angular interval, an output of a knock sensor is separated into a plurality of frequency components through a plurality of band-pass filters, and peak values of each frequency component are extracted. Then, a mean and a variance of the peak values are computed for each frequency ... 06/15/06 - 20060129303 - Method and device for identifying knocking A method and a device for detecting knocking, in which a measurement signal of a knock sensor is evaluated during combustion in a cylinder of a combustion engine to determine whether the combustion occurred with knocking. The measurement signal is subdivided into a plurality of windows, and in each window ... 06/08/06 - 20060122765 - Knock detection apparatus and knock detection method A knock detection apparatus which is capable of changing a knock control starting time period appropriately so as to prevent erroneous knock determination, to thereby expand a knock control range. A peak value acquisition unit acquires a peak value of a vibration of an internal combustion engine during each rotation ... 05/18/06 - 20060106523 - System and method for processing an accelerometer signal to assist in combustion quality control in an internal combustion engine A method for processing an accelerometer signal associated with the combustion process in an operating internal combustion engine, the method comprising the steps of measuring an accelerometer signal across a window of selected crank angle degrees during a cycle of the engine, the measured accelerometer signal including a combustion acceleration ... 05/04/06 - 20060095196 - Method and systems for determining internal combustion engine cylinder condition A method of evaluating a contribution of a cylinder to an engine includes measuring a first revolutions per minute of the engine during an enabled state; determining a dwell period of the cylinder; applying a direct current voltage signal into a negative terminal of an ignition coil of the engine ... 04/27/06 - 20060089782 - Method for the detection of misfires in an internal combustion engine According to methods known in prior art, a parameter which depends on the acceleration of the internal combustion engine is determined by means of a monitoring and analyzing system and is compared with a threshold value. According to the inventive method, the spread of said acceleration-dependent parameter is used for ... 04/20/06 - 20060085119 - Method and device for controlling an internal combustion engine A device and a method for controlling an internal combustion engine, in particular a diesel engine, are described. Based on the signal from a structure-borne noise detector, parameters are determined which are used to regulate the internal combustion engine. At least one parameter is determined through an analysis that includes ... 04/06/06 - 20060074543 - Method for detecting combustion failure by filtering A method for detecting combustion failure in an internal combustion engine, by calculating an index ln (t) representing engine irregularities at a moment (t) during certain combustion phases in one cylinder; calculating an observation function G (t), which is a function between index ln (t) and an estimated reference value ... 12/08/05 - 20050273245 - Compression ratio mode selection logic for an internal combustion engine having discrete variable compression ratio control mechanism A method and system for operating an internal combustion engine. The internal combustion engine is operable in a plurality of compression ratio operating modes. The method includes determining a relationship between a base engine threshold load where the high compression and low compression provide substantially the same engine fuel consumption ... 11/24/05 - 20050261821 - Signal processor The present invention provides a signal processor including a microprocessor for generating and supplying a control signal pulse train, a gain control circuit having a first switching device opened/closed by the control signal pulse train and resistors for determining an amplification factor with respect to a signal voltage as input ... 11/10/05 - 20050251320 - Internal combustion engine knock determination device and ignition control system including the same An engine ECU executes a program including the steps of: detecting a waveform of vibration of an engine at a predetermined knock detection gate; determining whether a detected vibration's waveform and a knock waveform model stored in memory match within a predetermined range; if the model and the detected vibration's ... 10/20/05 - 20050234633 - Knock determining apparatus and method for internal combustion engine A plurality of variables representing the characteristics of a knock is obtained from an output signal of a sensor. The variables include a peak value of the knock frequency component in the output signal of the sensor and a waveform correlation coefficient representing the correlation between the waveform of the ... 10/20/05 - 20050234632 - Apparatus and method for controlling internal combustion engine An ECU obtains two data values (a peak value and a waveform correlation coefficient) that show the characteristics of a knock from the output of a knock sensor. The ECO approximately obtains the mean of each data value by smoothing each data value, and approximately obtains a variance by smoothing ... 10/13/05 - 20050228574 - Vibration controller for active vibration insulators and method for controlling vibrations for the same A vibration controller includes a data map storage, a detector, a determiner, a signal generator, and an actuator. The data map storage stores amplitude and/or phase data with respect to torque values of a vehicle engine as a data map in advance. The detector detects actual torque values of the ... 09/08/05 - 20050197762 - Ignition timing control for internal combustion engine An internal combustion engine (1) causes an air/fuel mixture in a cylinder to combust due to ignition by a spark plug (14). The engine controller (50) calculates a temperature and pressure in the cylinder on the basis of the operating state of the engine (1) (531), calculates a limit ignition ... 07/28/05 - 20050165536 - Diagnosis system for variable valve controller A control mode of an intake valve lift controller is changed between a low-speed mode and a high-speed mode. Based on the control mode, an ignition timing is adjusted. When a knocking is detected by a knock sensor after the control mode is changed from the low-speed mode to the ... 06/30/05 - 20050143900 - Method for computing an ignition angle of an internal combustion engine A method for computing an ignition angle of an internal combustion engine as a function of the operating conditions of the engine and knock signals K, which indicate knocking combustion in the engine. If knock occurs, the ignition angle is retarded. If knock stops for a first period, the ignition ... 06/02/05 - 20050119820 - Internal combustion engine control system A vehicle-supervising electronic control unit (VS-ECU) measures driving torque, which is outputted from an engine to a drive shaft through an automatic transmission. The VS-ECU measures road surface transmission torque based on rotation speeds of driving wheels of a vehicle, vehicle body speed and driving wheel torque, which are measured ... ### FreshPatents.com Support |