Class / Patent application number | Description | Number of patent applications / Date published |
073114260 | Relative rotational position | 37 |
20080196486 | SENSOR ADJUSTING METHOD AND SYSTEM FOR VARIABLE VALVE MECHANISM - The present application provides a sensor adjusting method and a sensor adjusting system for a variable valve mechanism. An actuator is controlled based on an adjustment request signal from an external device in such a manner that a mechanical load of a variable valve mechanism moves to a position where the movement is limited by a stopper. When it is judged that the mechanical load has moved to the position where the movement is limited by the stopper, the mounting position and the electrical characteristics of the sensor for detecting the mechanical load are adjusted so that the output of the sensor assumes a reference value. | 08-21-2008 |
20080236265 | Method for Determining the Reversal of Direction of Rotation of an Engine - Method for determining the reversal of the direction of engine rotation for internal combustion engines having a crankshaft fitted with a target wheel having teeth, one of which is a long tooth, with a unidirectional crankshaft position sensor delivering a signal used for counting teeth and with an engine management device including a processor and a model of the engine behaviour in a stalling phase, including:
| 10-02-2008 |
20080245142 | ENGINE POSITION TRACKING FOR INTERNAL COMBUSTION ENGINES - A method for determining engine crankshaft position determines the position of a rotating crankshaft using one or many crankshaft position sensors. The sensor output signals representing crankshaft position are digitized and specific timing positions are derived. The sampled timing positions are compared to a known position template to determine crankshaft position. | 10-09-2008 |
20090056429 | METHOD AND SYSTEM FOR COLLECTING CRANKSHAFT POSITION DATA - A method for collecting crankshaft position data includes rotating a crankshaft of an engine within a selected angular velocity range without any fuel being applied to the engine and measuring crankshaft position data. | 03-05-2009 |
20090095060 | METHOD FOR ESTIMATING THE CRANK ANGLE AT WHICH 50% OF THE FUEL MASS HAS BEEN BURNT IN A CYLINDER OF AN INTERNAL COMBUSTION ENGINE WITH SPONTANEOUS MIXTURE IGNITION - An estimation method of the crank angle at which 50% of the fuel mass has been burnt in a cylinder of an internal combustion engine with spontaneous ignition of the mixture provided with a drive shaft coupled to a phonic wheel presenting a number N of teeth; the method contemplates the steps of: reading the passage of each tooth of the phonic wheel in front of a sensor; determining the angular speed of the drive shaft at each tooth event of the phonic wheel; determining at least one harmonic of the speed signal; determining an inverse mechanical model of the transmission; determining at least one torque harmonic by applying the inverse mechanical model to the speed signal harmonic; determining an algebraic function which puts a combustion index into relation with the phase of the n | 04-16-2009 |
20090165542 | CAMSHAFT AND CRANKSHAFT POSITION CORRELATION SIMULATION METHODS AND SYSTEMS - A system designed to simulate an internal combustion engine having improper valve timing is provided. The purpose of the simulation system is to calibrate and/or validate a proprietary cam-crank correlation diagnostic algorithm. The simulation system includes a simulator module that communicates with crankshaft and camshaft position sensors and an engine control module. The simulator module includes: a first selector that selects a shift value for shifting a periodic signal; and a modification module that receives a camshaft position signal from the camshaft position sensor and that generates a modified camshaft position signal based on the crankshaft position signal and the shift value. | 07-02-2009 |
20090178473 | APPARATUS FOR DETECTING ROTATIONAL POSITION OF INTERNAL COMBUSTION ENGINE - The rotational position detecting apparatus for an internal combustion engine includes a rotational angle sensor outputting a rotation angle signal indicative of a rotational angle of the internal combustion engine, an in-cylinder pressure sensor outputting an in-cylinder pressure signal indicative of an in-cylinder pressure of a cylinder of the internal combustion engine, and a reference rotational position detecting section which detects a specific rotational angle of the internal combustion engine at which the in-cylinder pressure becomes a predetermined reference pressure under a predetermined running condition of the internal combustion engine, and determines the detected specific rotational angle as a reference rotational position of the internal combustion engine. The reference rotational position detecting section detects the specific rotational angle at least a predetermined number of times, and determines an average value of the detected specific rotational angle as the reference rotational position. | 07-16-2009 |
20090183558 | Cam/crank sensor that allows for multiple orientations of a plastic over-molded bracket relative to a molded sensor terminal assembly - A vehicle camshaft/crankshaft sensor has a plastic terminal assembly defining a connector and a plastic housing and bracket assembly engaged with the terminal assembly and defining a plastic bracket. Various structures are disclosed for establishing one of plural discrete orientations between the bracket and the connector. | 07-23-2009 |
20090217744 | METHOD OF TRANSMITTING INFORMATION RELATING TO THE OPERATION OF AN INTERNAL COMBUSTION ENGINE - A method of transmitting information making it possible to monitor the operation of an internal combustion engine, includes the steps of:
| 09-03-2009 |
20090241649 | Method and system for detecting a crank angle of an engine - A method and a system for detecting a crank angle of an engine includes detecting a non-toothed portion of a crank pulse rotor during a inlet valve open period for preventing falsely recognizing compression top dead center as a position of the non-toothed portion. A crank angle sensor is arranged at a position facing an outer circumference of a crank pulse rotor including a non-toothed portion thereof. An interval calculating unit measures crank pulse time intervals between adjacent teeth based on a sensing signal received from the crank angle sensor. The measured successive crank pulse time intervals are compared for detection of the non-toothed portion. A ratio calculating unit calculates a ratio of crank pulse intervals. A maximum ratio detecting unit determines presence of the non-toothed portion when the calculated ratio of crank pulse interval is the maximum in the cycle of the engine. | 10-01-2009 |
20090301179 | Sensor for Recognizing a Position When Starting an Internal Combustion Engine - In order to acquire the angular position of a shaft of an internal combustion engine of a motor vehicle, in particular a crankshaft or a camshaft, a shaft angle sensor and a shaft angle sensor system are proposed. The shaft angle sensor has a magnetic transducer element and a magnetic sensor element. Either the magnetic transducer element or the magnetic sensor element is capable of being connected fixedly to the shaft. The magnetic sensor element produces at least one angle signal that is transmitted wirelessly to a base station by a transmitter device. | 12-10-2009 |
20100018299 | ENGINE CONTROL DEVICE - In an engine control device, when a missing-tooth location K formed on a rotor of a crank shaft sensor fixed to a crank shaft of an engine is detected at timing t | 01-28-2010 |
20100064787 | ARRANGEMENT STRUCTURE FOR SENSOR TO BE MOUNTED TO ENGINE OF VEHICLE - Disclosed is an arrangement structure for a sensor to be mounted to an engine of a vehicle, wherein the engine is arranged in an engine compartment | 03-18-2010 |
20100107747 | METHOD FOR INCREMENTALLY ASCERTAINING A ROTATION ANGLE OF A SHAFT - A method for incrementally ascertaining a rotation angle of a shaft, in particular of a crankshaft of an internal combustion engine, the shaft being connected to a sensor wheel having teeth and tooth gaps, and at least one sensor being associated with the sensor wheel, the sensor generating a square-wave signal as an output signal which may assume a first value or a second value, and a signal edge being associated with a tooth edge, and the position in time of a counteredge with respect to the edge encoding a direction of rotation, an assignment of a direction of rotation reversal point to a tooth of the sensor wheel or a tooth gap of the sensor wheel being encoded by the position in time of the counteredge with respect to the edge, the rotation angle being ascertained by adding an increment for each signal edge to a counter, after a direction of rotation reversal while a tooth passes the sensor, a half-increment, having a sign of the direction of rotation after the direction of rotation reversal, being incremented once and in the event of a direction of rotation reversal while a tooth gap passes the sensor, a half-increment, having a sign of the direction of rotation prior to the direction of rotation reversal, being incremented once. | 05-06-2010 |
20100263438 | CAMSHAFT POSITION MEASUREMENT AND DIAGNOSIS - A method of operating an engine includes determining a relative position between a first camshaft and a second camshaft during a startup event of the engine when the first camshaft is at a first home position and the second camshaft is at a second home position. The first home position is a first preset angular position of the first camshaft relative to a crankshaft. The second home position is a second preset angular position of the second camshaft relative to the crankshaft when the engine is in an OFF state. The method includes generating a first estimate of the first home position. The method also includes diagnosing a mis-build of the engine based on the relative position, the first estimate and a second estimate of the second home position. | 10-21-2010 |
20100263439 | ENGINE POSITION TRACKING FOR INTERNAL COMBUSTION ENGINES - A method for determining engine crankshaft position determines the position of a rotating crankshaft using one or many crankshaft position sensors. The sensor output signals representing crankshaft position are digitized and specific timing positions are derived. The sampled timing positions are compared to a known position template to determine crankshaft position. | 10-21-2010 |
20100319442 | METHOD FOR TESTING A DRIVE ARRANGEMENT AND ACCORDINGLY EQUIPPED CONVERTER - In a method according to the invention for testing a drive arrangement and an accordingly equipped converter, an actual torsional backlash of an engine brake, which is preferably configured as a spring-operated brake, is determined and compared to a permitted torsional backlash. To this end, a test torque, which is smaller than a holding torque of the brake, is moved counter to the closed brake up to a stop, preferably in both directions of rotation. The testing method can be implemented as a routine check in a converter of the drive arrangement. | 12-23-2010 |
20110290010 | APPARATUS AND METHOD FOR ESTIMATING BOUNCE BACK ANGLE OF A STOPPED ENGINE - An engine control system, controller, and method for estimating a bounce back angle of an internal combustion engine. Typical crank sensors do not indicate crank direction, a feature that would be useful to determine if an engine reversal occurs leading to the engine accumulating a bounce back angle. A crank sensor signal is analyzed as the engine coasts to a stop so an engine reversal can be detected. After an engine reversal is detected, the crank sensor signal is analyzed to determine the bounce back angle. Engine reversal is detected by determining that the crank shaft has decelerated by more than a threshold value, or that the crank shaft has decelerated and then subsequently accelerated. | 12-01-2011 |
20110308307 | Test machine - A test machine comprising a driver ( | 12-22-2011 |
20130104635 | METHOD FOR DETECTING A ROTATION ANGLE | 05-02-2013 |
20140182365 | CRANK ANGLE DETECTION APPARATUS - A crank angle detection apparatus may include a crank gear provided to be rotated together with a crankshaft, a balance gear provided to be rotated together with a balance shaft and engaged with the crank gear so that the balance shaft is rotated in accordance with rotation of the crankshaft, and a crank angle sensor configured to sense rotation of the balance gear or the crank gear and detect a rotation angle of the crankshaft. | 07-03-2014 |
20140311230 | Method for determining segment times of a sensor wheel of an iternal combustion engine - A method for determining segment times of a sensor wheel of an internal combustion engine, the sensor wheel being non-rotatably connected to a crankshaft of the internal combustion engine, marks being situated along the circumference of the sensor wheel, and the crankshaft of the internal combustion engine covering predetermined angle ranges during the segment times. Tooth times are determined as time intervals between two marks of the sensor wheel; a low-pass filtering is applied to the determined tooth times, and filtered tooth times are determined as a result of the low-pass filtering. Segment times of the sensor wheel are determined as a sum of filtered tooth times of a certain number of successive marks of the sensor wheel. | 10-23-2014 |
20140360254 | CAMSHAFT POSITION PULSE-GENERATING WHEEL AND METHOD AND DEVICE FORASCERTAINING A CAMSHAFT POSITION - A camshaft position pulse-generating wheel having a plurality of teeth on its circumference at irregular angular distances and one tooth edge in each case, at least at 0°, 90°, 120°, 180°, 240° and 270° of its circumference, and a device for ascertaining a camshaft position. In this position, the camshaft position pulse-generating wheel is connected, in a torsionally fixed manner, to a camshaft of a four-stroke internal combustion engine having at least one cylinder and a camshaft position sensor to detect a position of a tooth edge of the camshaft position pulse-generating wheel. For determining the camshaft position, per revolution of the camshaft and per cylinder of the internal combustion engine, either exclusively a camshaft position is assigned to a position of a negative tooth edge of the camshaft position pulse-generating wheel or to a position of a positive or a negative tooth edge of the camshaft position pulse-generating wheel. | 12-11-2014 |
20150114097 | METHOD FOR IDENTIFYING THE EDGES ON A CAMSHAFT TARGET - Process for identifying edges on a camshaft target ( | 04-30-2015 |
20150300917 | METHOD FOR PROCESSING A SIGNAL SUPPLIED BY A BI-DIRECTIONAL SENSOR AND CORRESPONDING DEVICE - A method and device for processing a signal (CRK) provided by a bidirectional sensor, the method includes the following steps:
| 10-22-2015 |
20160025595 | METHOD AND APPARATUS TO DETERMINE ROTATIONAL POSITION OF A PHASER IN A VARIABLE PHASING SYSTEM - A method to determine a rotational position of a phaser for variable phasing system including a low-resolution rotational position sensing system includes estimating a rotational position of the phaser based upon a time interval between occurrence of a measured position of the phaser and a present periodic timepoint, a commanded position of the phaser, said measured position of the phaser, and a time constant of the variable phasing system when the occurrence of the measured position of the phaser is subsequent to a preceding periodic timepoint occurring at a set time interval prior to the present periodic timepoint. | 01-28-2016 |
20160178480 | CRANKSHAFT POSITION SENSING SYSTEM | 06-23-2016 |
20160202146 | MALFUNCTION DIAGNOSIS DEVICE FOR CRANK-ANGLE SENSOR, AND MALFUNCTION DIAGNOSIS METHOD FOR CRANK-ANGLE SENSOR | 07-14-2016 |
073114270 | With cylinder phase identification | 9 |
20090007646 | APPARATUS AND METHOD FOR DETECTING CAM PHASE OF ENGINE - An apparatus and method for detecting a cam phase of an engine provided with a variable valve timing mechanism able to vary a rotating phase of a camshaft relative to a crankshaft of the engine, which apparatus and method can detect the rotating phase in a short cycle. There is provided a cam angle sensor having a configuration of outputting a cam angle signal at each time when the camshaft rotates by a unit angle. At the same time, by lengthening an output cycle of the cam angle signal on a part thereof or by using a second cam angle sensor able to detect a reference cam angle position, a cam angle position to which individual cam angle signal corresponds is detected. Then, the rotating phase of the camshaft relative to the crankshaft can be detected, based on the detection result of the cam angle position based on the cam angle signal. | 01-08-2009 |
20090139316 | Cylinder Stroke Position Measurement Device - A cylinder stroke position measurement device for enabling common use of a rotation sensor unit in measurement of a cylinder stroke position by detecting an amount of rotation of a rotary roller by means of a rotation sensor. A cylinder is provided at its head portion with a base member | 06-04-2009 |
20090158832 | Method and apparatus for detecting a stroke of a 4-cycle internal combustion engine, based on changes in rotary engine speed - A stroke detection apparatus performs a stroke detection of 4-cycle engine based on a rotary engine speed when a throttle opening is large. A first crank-pulse time interval between a crank pulse inputted before a top dead center by 30°, and a crank pulse of the top dead center is measured by a pulse-interval calculation unit, and at the same time, a second crank-pulse time interval between a crank pulse inputted after the top dead center by 60° and a crank pulse inputted after the top dead center 90° is measured. An interval difference calculation unit calculates time-interval difference by subtracting the second crank-pulse time interval from the first crank-pulse time interval, for two continuous top dead centers. A stroke detection unit determines whether two top dead centers are a compression top dead center or an exhaust top dead center based on magnitudes of the time-interval differences. | 06-25-2009 |
20090183559 | Method for Ascertaining Individual-Cylinder Rotation Parameters of a Shaft of an Internal Combustion Engine - A method for operating an internal combustion engine in which a first rotation parameter is measured at a first end of a shaft of the internal combustion engine, and individual-cylinder rotation parameters are determined using the first rotation parameter. The method is characterized in that a second rotation parameter is measured at a second end of the shaft, and the individual-cylinder rotation parameters are determined using the first rotation parameter and the second rotation parameter. A control unit that controls the method is also presented. | 07-23-2009 |
20110162445 | APPARATUS AND METHOD FOR DETECTING CAM PHASE OF ENGINE - An apparatus and method for detecting a cam phase of an engine provided with a variable valve timing mechanism able to vary a rotating phase of a camshaft relative to a crankshaft of the engine, which apparatus and method can detect the rotating phase in a short cycle. There is provided a cam angle sensor having a configuration of outputting a cam angle signal at each time when the camshaft rotates by a unit angle. At the same time, by lengthening an output cycle of the cam angle signal on a part thereof or by using a second cam angle sensor able to detect a reference cam angle position, a cam angle position to which individual cam angle signal corresponds is detected. Then, the rotating phase of the camshaft relative to the crankshaft can be detected, based on the detection result of the cam angle position based on the cam angle signal. | 07-07-2011 |
20150020581 | Method and device for ascertaining a position of a camshaft and a phase of an internal combustion engine - A device for ascertaining a camshaft position and a phase of an internal-combustion engine having multiple cylinders, including a first position sensor wheel having multiple teeth on its circumference and rotatably and fixedly connected to an engine camshaft; a first position sensor for detecting a tooth flank position of the first wheel; a transmission connecting the camshaft to a crankshaft; a second position sensor wheel having at least one tooth on its circumference and being connected to the transmission so that it is synchronously driven with the camshaft, and a second position sensor for detecting a tooth flank position of the second wheel. For ascertaining a camshaft position and a phase of an engine with this device, a camshaft position is assigned to a position of a tooth flank of the first wheel and a phase of the engine is assigned to a tooth flank position of the second wheel. | 01-22-2015 |
073114280 | Piston position | 3 |
20100223982 | Device for measuring the axial position of a piston rod relative to a cylinder housing - Device for measuring the axial position of a piston rod ( | 09-09-2010 |
073114290 | Using microwave energy | 2 |
20100223983 | DISTANCE MEASURING DEVICE AND METHOD FOR DETERMINING A DISTANCE, AND A SUITABLE REFLECTIVE MEMBER - A distance measuring device and a method for determining a distance are provided. The distance measuring device includes a reflective member, evaluation electronics and a sensor device having at least one coupling probe for feeding a transmission signal into a line structure with the reflective member. The reflective member includes a base plate with an attached collar for forming a cup-shaped element. | 09-09-2010 |
20100288036 | DEVICE FOR DETERMINING THE POSITION OF A PISTON IN A CYLINDER - A device for determining the position of a piston in a cylinder comprises an ultrasound facility for transmitting ultrasound signals into the inside of the cylinder and for receiving ultrasound signals that are reflected from said piston. A projection is provided on a front surface of the piston and comprises a front surface that is offset by a certain height with respect to the remaining front surface of the piston. The projection is isolated in any piston position that can be reached during operation. The position of the piston is determined by an analytical facility based on the transit time of the ultrasound signals between the ultrasound facility and the front surface of the projection. | 11-18-2010 |