| Entries |
| Document | Title | Date |
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| 20080229814 | CRANK POSITION CORRECTION USING CYLINDER PRESSURE - A method of correcting a crankshaft position may include determining first, second, and third crankshaft positions, determining first, second, and third cylinder pressures, determining first, second, and third cylinder volumes, determining the logarithm of the first, second, and third cylinder pressures and cylinder volumes, and determining a relationship between the third cylinder volume and the first and second cylinder volumes. The first, second, and third crankshaft positions may be provided during one of a piston expansion stroke and a piston compression stroke within a cylinder. The logarithm of the third cylinder pressure and cylinder volume may be evaluated with respect to a predetermined limit of a line defined by the logarithm of the first and second cylinder pressures and first and second cylinder volumes. | 09-25-2008 |
| 20080236263 | Method and device for analyzing a sensor element - A method and a device for analyzing a sensor element are described, which allow a temperature dependence of the sensor element to be considered without an additional temperature sensor in particular. The sensor element outputs a signal as a function of a measured variable. The signal of the sensor element is analyzed in a first analysis operating mode to detect the measured variable. The signal of the sensor element is analyzed in a second analysis operating mode to detect a characteristic variable of the sensor element which is different from the measured variable. | 10-02-2008 |
| 20090038385 | PRESSURE MONITORING SYSTEM - A pressure monitoring system for a combustion engine includes, but is not limited to of combustion chambers and pressure sensors associated to at least some of the combustion chambers. A multiplexer has inputs connected to at least a first one and a second one of the pressure sensors. A non-zero phase shift exists between the operating cycles of first and second ones of the combustion chambers associated to the first and second pressure sensors. A controller controls the multiplexer to output data from the first pressure sensor while the first combustion chamber is in a predetermined portion of its operating cycle and pressure data from the second pressure sensor while the second combustion chamber is in the predetermined portion of its operating cycle. | 02-12-2009 |
| 20090158831 | Engine Management - An in-cylinder pressure sensor obtains a high resolution pressure curve for each cylinder cycle allowing the various data to be derived for improved monitoring and control of operation of the engine. A more accurate measure of work done by the engine is obtained allowing more accurate estimation of the vehicle torque and hence real torque control. In addition, engine losses can be more accurately calculated and the estimates corrected yet further by obtaining an accurate top dead centre position for the engine cylinders. | 06-25-2009 |
| 20090293597 | SYSTEM AND METHOD FOR MONITORING COMBUSTION CHAMBER PRESSURE AND CONTROL SYSTEM USING THE SAME - In a monitoring system and method for monitoring pressure in a combustion chamber of an internal combustion engine, a sensor is operable to sense movement of a valve while the valve is in its closed position. The sensor generates data indicative of the sensed movement of the valve. A control system is in communication with the sensor to receive the data indicative of the sensed movement of the valve in the closed position thereof. The control system is operable to determine the pressure in the combustion chamber based at least in part on the sensed movement of the valve. In other aspects, operation of the engine is adjusted based at least in part on the determined pressure in the combustion chamber. | 12-03-2009 |
| 20090301177 | METHOD AND DEVICES TO IDENTIFY THE PISTON IN THE COMPRESSION PHASE IN AN INTERNAL COMBUSTION ENGINE EQUIPPED WITH A GASOLINE INDIRECT ELECTRONIC INJECTION SYSTEM - The invention relates to the field of method and devices therefore for identifying which cylinder is in the compression phase in a gasoline indirect electronic injection internal combustion engine. | 12-10-2009 |
| 20100107746 | DEVICE FOR DIRECTLY MEASURING ON A PISTON THE EFFECTIVE VOLUMETRIC RATIO OF A VARIABLE COMPRESSION RATIO ENGINE - A device for measuring the effective volumetric ratio of at least one cylinder in a variable compression-ratio engine, includes at least one target passage sensor ( | 05-06-2010 |
| 20100147057 | Apparatus for Measuring the Cylinder Internal Pressure of Internal Combustion Engines - The invention relates to an apparatus for measuring the cylinder internal pressure of internal combustion engines and, in particular, of gas engines, said apparatus having a first valve ( | 06-17-2010 |
| 20100162803 | METHOD AND DEVICE FOR DETECTING PEAK VALUES OF PRESSURE IN A CYLINDER OF AN INTERNAL COMBUSTION ENGINE - A method of detecting during a combustion cycle a peak value of pressure in a cylinder of an internal combustion engine includes providing and installing on the engine body an accelerometer that generates an acceleration signal representing vibrations of the engine body. The acceleration signal is filtered by comparing the band-pass filtered replica of the acceleration signal to a threshold. When the threshold is surpassed, a pressure peak is detected and flagged. | 07-01-2010 |
| 20100294028 | DEVICE FOR DETECTING A COMBUSTION CHAMBER PRESSURE OF AN INTERNAL COMBUSTION ENGINE - A device for detecting a combustion chamber pressure of an internal combustion engine, in particular a gasoline engine. The device includes a sensor housing, the sensor housing being set up to be at least partially introduced into a combustion chamber of the internal combustion engine. At least one mechanical-electrical transducer element is accommodated inside the sensor housing, which is separated from the sensor housing by at least one sensor holder, in particular a sensor holder which at least partially encloses the mechanical-electrical transducer element. The sensor holder has an at least partially rigid design. | 11-25-2010 |
| 20110005308 | Pressure Measuring Device - A pressure measuring device suitable for disposition in a chamber of an internal combustion engine. The pressure measuring device has a housing, a force transmitting element that is effectively connected to a pressure sensor, and a sensor cage that surrounds the pressure sensor. The sensor cage is connected to the housing by a circumferential weld seam only at one connection segment of the housing. In this way, it is possible to achieve a defined pre-tensioning of a metal diaphragm that is connected on the one hand to the sensor cage and on the other hand to the force transmitting element. | 01-13-2011 |
| 20110030462 | PRESSURE MEASURING DEVICE AND CORRESPONDING METHOD - A device for measuring the cylinder pressure of an internal combustion engine, the operation of which comprises a plurality of successive cycles, each cycle being broken down into at least first and second strokes, the measuring device comprising at least one pressure sensor ( | 02-10-2011 |
| 20110083498 | IN-CYLINDER PRESSURE SENSOR DIAGNOSTIC SYSTEMS AND METHODS - A pressure sensor diagnostic system of the present disclosure includes an excitation module, a frequency determination module, and a fault determination module. The excitation module excites an in-cylinder pressure sensor and causes the in-cylinder pressure sensor to oscillate. The frequency determination module determines an oscillation frequency of the in-cylinder pressure sensor. The fault determination module diagnoses the in-cylinder pressure sensor based on the oscillation frequency. | 04-14-2011 |
| 20110088459 | METHOD FOR DETERMINING AN IN-CYLINDER PRESSURE CURVE OF A MULTI-CYLINDER ENGINE - A method is provided for determining an in-cylinder pressure curve representative of the evolution of the pressure within a cylinder of a multi-cylinder internal combustion engine. The method includes, but is not limited to setting a timeframe during the engine functioning, sampling pressure within at least two sensed cylinders of the engine, the samplings being performed during not contemporary sampling periods within the assumed timeframe, in order to acquire a partial in-cylinder pressure curve for each of said sensed cylinders, and using said partial in-cylinder pressure curves for reconstructing a whole in-cylinder pressure curve. | 04-21-2011 |
| 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 |
| 20110209533 | CETANE NUMBER DETERMINATION APPARATUS FOR FUEL OF DIESEL ENGINE AND METHOD OF DETERMINING CETANE NUMBER OF FUEL OF DIESEL ENGINE - A minute amount of fuel is injected into a combustion chamber during fuel cut, and a cylinder pressure is detected when the minute amount of fuel is being combusted. Then a combustion ratio is calculated based on the detected cylinder pressure, and a determination crank angle, which is used for determining a cetane number based on the combustion ratio, is determined. The cetane number is determined based on the determination crank angle. | 09-01-2011 |
| 20110214494 | DEVICE INCLUDING A PRESSURE SENSOR FOR MEASURING PRESSURES INSIDE THE COMBUSTION CHAMBER OF AN ENGINE - A device includes a pressure sensor ( | 09-08-2011 |
| 20120079877 | COMPRESSION TEST ADAPTER - A compression tester adapter is provided. The compression adaptor includes a generally cylindrical plug fitting, including a pilot segment, an external thread, a cylinder segment, a gasket located between the external thread and the cylinder segment and a plug end; and a connector fitting including an attachment interface; and a hose attached to the plug fitting. A method of adapting a compression tester spark plug hose for use with a spark plug socket is provided. The method includes; engaging a threaded spark plug socket in an internal combustion engine cylinder head; attaching a compression tester spark plug hose; and transmitting a compressed gas to the compression tester spark plug hose wherein the spark plug socket thread is configured with a nominal diameter of 12 millimeters; and creating a substantially airtight seal against a periphery of a tapered seat near a inner extreme of the spark plug socket. | 04-05-2012 |
| 20120174660 | COMBUSTION CHAMBER PRESSURE SENSOR FOR RECORDING A PRESSURE IN A COMBUSTION CHAMBER OF AN INTERNAL COMBUSTION ENGINE - A combustion chamber pressure sensor is provided for recording a pressure in a combustion chamber of an internal combustion engine, the combustion chamber pressure sensor has a housing having an inner space that is at least partially enclosed by the housing. At least one mechanical-electrical transducer element, for recording the pressure, is accommodated in the housing. The housing has at least one housing opening. The housing opening is sealed by at least one diaphragm. The diaphragm has at least one convex curvature towards the inner space. | 07-12-2012 |
| 20120279290 | APPARATUS, SYSTEM, AND METHOD FOR TESTING A TURBOCHARGER - A testing apparatus for a turbocharger is provided. The turbocharger includes a turbine and a compressor, and a non-contact seal positioned between an oil cavity and one of the turbine and the compressor. In one embodiment, the testing apparatus includes a regulatable air input configured to couple to an outlet of the oil cavity, the regulatable air input coupled to an air supply, and a flow restrictor with at least one pressure gauge coupled to the regulatable air input. The kit includes media embodying instructions that specify correlating an amount of flow to a degree, rate, or amount of leakage past the non-contact seal. | 11-08-2012 |
| 20120297865 | CYLINDER PRESSURE ESTIMATION DEVICE OF INTERNAL COMBUSTION ENGINE - A cylinder pressure estimation device includes means for calculating a plurality of candidate values of a possible cylinder pressure at an intake-valve-closing time, means for calculating a plurality of candidates of a possible movement of the cylinder pressure from the intake-valve-closing time to a post-intake-valve-closing time on the basis of the candidate values of the intake-valve-closing-time cylinder pressure, means for calculating a movement of the cylinder pressure detected by the cylinder pressure sensor from the intake-valve-closing time to the post-intake-valve-closing time; and means for comparing the candidates of the cylinder pressure movement with the detected cylinder pressure movement, determining the candidate of the cylinder pressure movement to be deemed to correspond to the detected cylinder pressure movement and determining the candidate value of the intake-valve-closing-time cylinder pressure used for calculating the determined candidate of the cylinder pressure movement. | 11-29-2012 |
| 20120324989 | SYSTEM AND METHOD FOR DIAGNOSIS OF ENGINE COMPONENT CONDITION - A diagnostic system for an internal combustion engine includes a pressure sensor configured to measure pressure within a combustion cylinder. An electronic controller is configured to receive a pressure signal from the pressure sensor, analyze the pressure signal by at least partially comparing the pressure signal to a predetermined pressure signal, and diagnose a failure of one or more piston ring seal(s), an intake valve, and an exhaust valve of the engine based on a difference between the pressure signal and the predetermined pressure signal. | 12-27-2012 |
| 20130019668 | INJECTION CONTROL METHOD - A method of determining whether a cylinder in an engine system comprising a plurality of cylinders is ready for injection/ignition, the method comprising: monitoring the in-cylinder pressure of each of the plurality of cylinders within the engine system; determining a pressure related parameter for each cylinder within the engine system; wherein, in the event that the pressure related parameter in a given cylinder exceeds a first threshold, the method further comprises performing a diagnostic test in order to determine whether the given cylinder is ready for injection/ignition. | 01-24-2013 |
| 20130118241 | METHOD AND DEVICE FOR DETERMINING THE COMPOSITION OF A FUEL MIXTURE - A method for determining the composition of a fuel mixture consisting of a first fuel and a second fuel to operate an internal combustion engine having at least one cylinder pressure sensor for determining the cylinder pressure in at least one cylinder of the internal combustion engine. The calorific value of the fuel mixture or a characteristic variable correlating to said calorific value is determined from the cylinder pressure and the composition of the fuel mixture is determined from said calorific value or the characteristic variable correlating to said calorific value. | 05-16-2013 |
| 20130239669 | ESTIMATION DEVICE FOR CYLINDER INTAKE AIR AMOUNT IN AN INTERNAL COMBUSTION ENGINE - An estimation device for a cylinder intake air amount in an internal combustion engine is obtained which can estimate an amount of air actually sucked into a cylinder with a high degree of accuracy by using a physical model of an intake system. A volumetric efficiency corresponding value is calculated based on an exhaust efficiency (a linear function of intake pipe internal pressure) which is an index indicating an amount of residual gas which is an exhaust gas after combustion remaining in the cylinder without being discharged from the interior of the cylinder to an exhaust pipe, and an intake efficiency (a linear function of intake pipe internal pressure) which is an index indicating an amount of air coming into the cylinder from an intake pipe excluding the residual gas, whereby the estimation is carried out to a high degree of accuracy with a small number of adaptation constants. | 09-19-2013 |
| 20130319093 | METHOD AND DEVICE FOR DIAGNOSING AN ACTUATOR FOR AN EXHAUST-GAS-DRIVEN SUPERCHARGER - A method for testing a supercharger actuator for a supercharger of a supercharged internal combustion engine, including adjusting the supercharger actuator from a first position to a second position, determining a rotational speed change information, which is a function of the change of the rotational speed of the supercharger resulting from the adjustment, and establishing a malfunction of the supercharger actuator as a function of the rotational speed change information. | 12-05-2013 |
| 20140130584 | SYSTEMS AND METHODS FOR HOLDING TARGET TURBOMACHINE COMPRESSOR PRESSURE RATIO CONSTANT WHILE VARYING SHAFT SPEED - Embodiments of the disclosure relate to systems and methods for holding target turbomachine compressor pressure ratio constant while varying the shaft speed. In order to characterize a load compressor and validate the compressor design, the speed of the load compressor can be changed while controlling the compressor operating line and holding the inlet guide vanes at a constant angle. Discharge control valves can be dynamically adjusted to maintain the pressure ratio equal to the operating line over a range of speeds. | 05-15-2014 |
| 20140174164 | DEVICE FOR DETECTING A PRESSURE, IN PARTICULAR A COMBUSTION CHAMBER PRESSURE OF AN INTERNAL COMBUSTION ENGINE - A device for detecting a pressure, in particular in a combustion chamber of an internal combustion engine, has a housing and an adapter element secured in the housing for accommodating a sensor module. The sensor module includes at least one sensor element and one support element. The sensor element makes electrical contact with connecting lines which extend in the axial direction of the sensor module. The support element has a section on which support surfaces are formed for the connecting lines. | 06-26-2014 |
| 20140260574 | INTRA-CYLINDER PRESSURE SENSOR FAULT DIAGNOSTIC DEVICE AND INTRA-CYLINDER SENSOR SENSITIVITY CORRECTION DEVICE PROVIDED WITH SAME - An intra-cylinder pressure sensor fault diagnostic device that ensures an opportunity for fault diagnosis in a wide operation region, and can accurately detect an intra-cylinder pressure with a high S/N ratio. The fault diagnostic device for an intra-cylinder pressure sensor, which outputs a value corresponding to an intra-cylinder pressure of an internal combustion engine delays ignition timing so that firing timing comes after a compression top dead center to generate peaks of the intra-cylinder pressure before firing and after firing respectively. When the ignition timing is delayed, at least one of an output value of the intra-cylinder pressure sensor in the peak of the intra-cylinder pressure before firing (hereinafter, called a pre-firing output peak value) and a crank angle thereof is detected. A fault of the intra-cylinder pressure sensor is determined by using at least one of the pre-firing output peak value and the crank angle thereof | 09-18-2014 |
| 20140283586 | MEASURING PLUG AND METHOD FOR ASSEMBLING A MEASURING PLUG - Disclosed is a pressure-measuring plug for a combustion engine. An interconnection structure in the plug body electrically couples by means of a flexible printed circuit board (PCB) an electrical sensing element at one end of the plug body to connector terminals of the plug at the other end of the plug body. An elongated support structure fixates a part of the flexible PCB in the plug body to enable the flexible PCB to withstand automotive conditions and to facilitate during assembly to put the flexible PCB through the hollow plug body. | 09-25-2014 |
| 20150322877 | Determining the Amount of Energy Released in a Cylinder of an Internal Combustion Engine by Evaluating Tooth Timings of a Sensor Disc that is connected to a Crankshaft - A method for determining an amount of energy released in the working cycle of an internal combustion engine cylinder includes: (a) recording a time curve of the rotational speed of the engine crankshaft using tooth timings measured using a toothed sensor disc, (b) assigning each tooth timing to a working cycle of a selected cylinder, (c) determining a cylinder-specific average value from the tooth timings assigned to the selected cylinder, (d) determining cylinder-specific tooth timing deviations from the determined cylinder-specific average value, for the tooth timings assigned to each working cycle of the selected cylinder, (e) determining a cylinder-specific characteristic tooth timing by summing the determined tooth timing deviations, and (f) specifying the amount of energy released in the working cycle of the selected cylinder as a function of the determined cylinder-specific characteristic tooth timing, the amount of energy released being indirectly proportional to the determined cylinder-specific characteristic tooth timing. | 11-12-2015 |
| 20160115830 | DETECTION APPARATUS FOR AT LEAST ONE OF TEMPERATURE AND PRESSURE IN A CYLINDER OF AN INTERNAL COMBUSTION ENGINE - An apparatus for measuring at least one of temperature and pressure within a cylinder of an internal combustion engine can include an engine valve and a sensor. The internal combustion engine can include a valvetrain having rocker arm assembly, a camshaft, a valve, and a hydraulic lash adjuster. The engine valve can have a valve head and a valve stem extending from the valve head in an axial direction. The valve head can have a valve face configured to be in pressure communication with an engine cylinder. The valve stem can have an outer surface with a cylindrical portion and a variably-shaped portion. The variably-shaped portion can define a target detectable by the sensor and the sensor can be installed adjacent to the target. Alternatively, the sensor can be positioned to detect a level of force at some point along the valvetrain. | 04-28-2016 |
| 20160146703 | COMBUSTION STATE PARAMETER CALCULATION METHOD FOR INTERNAL COMBUSTION ENGINE - A combustion state parameter calculation method for an internal combustion engine, which is capable of continuously calculating a combustion state parameter while properly maintaining the accuracy of the calculated parameter even when part of in-cylinder pressure sensors is in failure. In the combustion state parameter calculation method, as a combustion state parameter, a first combustion state parameter dependent on the magnitude of in-cylinder pressure is calculated based on a detection value from an in-cylinder pressure sensor, on a cylinder-by-cylinder basis. When it is determined that a characteristic abnormality failure in which the magnitude of the detection value deviates from the actual in-cylinder pressure has occurred in part of the in-cylinder pressure sensors and has not occurred in the other in-cylinder pressure sensors, the first combustion state parameter of a failure-determined cylinder is calculated based on the detection value from the other in-cylinder pressure sensors. | 05-26-2016 |
| 20160252429 | PRESSURE MEASUREMENT SYSTEM FOR ENGINE | 09-01-2016 |
