Class / Patent application number | Description | Number of patent applications / Date published |
073114180 | Pressure sensor detail | 60 |
20080236264 | Device and Method for Determining Trouble of Cylinder Pressure Sensor - A device and a method for determining the trouble of a cylinder pressure sensor. The device accurately detecting the trouble of the cylinder sensor without increasing cost calculates the cylinder pressure of an internal combustion engine based on an output from the cylinder sensor installed in the internal combustion engine and calculates a drift parameter indicating the drift amount of the cylinder pressure based on the cylinder pressure. When the drift parameter is not within a specified range, the device determines that the cylinder pressure sensor is defective. According to one embodiment, the specified range can be set based on the behavior of the cylinder pressure. According to the other embodiment, a correction factor is obtained according to the operating state of the internal combustion engine, and the drift parameter is corrected with the correction factor. Also, according to the third embodiment, the cylinder pressure sensor is operated so that a specified search signal is superimposed on the output from the cylinder pressure sensor. The cylinder pressure is calculated based on the output from the cylinder pressure sensor on which the search signal was superimposed. | 10-02-2008 |
20090025468 | Piezoelectric Combustion Chamber Pressure Sensor Having a Pressure Transmission Pin - A sensor made of a single-crystal, piezoelectric material for measuring the pressure in a combustion chamber of an internal combustion engine, having a pressure transmission pin, a displaceably mounted heating pin protruding into the combustion chamber being provided as the pressure transmission pin, and the sensor being friction-locked with the heating pin. The sensor is preferably situated between the heating pin and a rigid thrust bearing. The single-crystal piezoelectric material of the sensor is preferably made of lithium niobate (LiNbO | 01-29-2009 |
20090038386 | SENSOR STRUCTURE IN PARTICULAR FOR A HARSH ENVIRONMENT IN A MOTOR VEHICLE - A sensor structure is disclosed, notably for a harsh environment in a motor vehicle. The sensor includes a sensor body having, at one end, an element sensitive to the quantity to be measured in the harsh environment and, at another end, a circuit for connecting it, placed outside the harsh environment, physically separated from each other, connected by means for transmitting data without a connection, and between which means are provided that are permeable to data, for protecting the connecting circuit from the environment. | 02-12-2009 |
20090095059 | Pressure sensor and structure for attachment of pressure sensor - A pressure sensor for use in an engine by installation of the pressure sensor into an installation hole of an engine head is provided. The pressure sensor includes: a body having a first end; a pressure receiving diaphragm disposed in the first end; a sealing surface disposed on the side surface of the body; and an expansion member, which is disposed on the side surface of the body so that, with respect to the first end of the body, the expansion member is located closer than the sealing surface. When heat is generated by an engine operation after the installation of the first end of the body into the installation hole, the expansion member expands due to the heat to fill in a space between an inner surface of the installation hole and a side surface of the body. | 04-16-2009 |
20090126472 | COMBUSTION PRESSURE SENSOR FOR INTERNAL COMBUSTION ENGINE - A combustion pressure sensor has a cylindrical housing having a fixing functional member fixed to an engines head, and a sealing functional member disposed on the inner side of the fixing member, a transmission member disposed on the inner side of the sealing member through an opening to face a combustion chamber and to be movable along the axial direction, a detecting unit disposed between the sealing member and the transmission member to detect a combustion pressure in the combustion chamber in response to the movement of the transmission member, and a seal member for shielding the opening from the combustion chamber. The members are connected with each other at a connection area such that extension and contraction in the axial direction in each of the functional members is independent of the other one. | 05-21-2009 |
20090320576 | Piezoresistive Pressure-Measuring Plug for a Combustion Engine - A piezoresistive pressure-measuring plug ( | 12-31-2009 |
20100011847 | Dual Application Compression Tester Adapter Assembly and Method - A compression tester adapter assembly is provided for use with both 12 millimeter and 16 millimeter spark plug sockets in an internal combustion engine cylinder head. An adapter has a leading cylindrical portion including one set of external threads configured with a nominal diameter of 12 millimeters, and a trailing cylindrical portion spaced from the leading cylindrical portion and including another set of external threads configured with a nominal diameter of 16 millimeters. The axial spacing between a first leading full thread on the 12 millimeter threads and a first leading full thread on the 16 millimeter threads lies in the critical range of 0.636″-0.737″. A hose has opposite ends attached to the adapter and a connector. | 01-21-2010 |
20100077844 | PRESSURE SENSOR - A pressure sensor has a Si device having a first main surface that has a bonded area, a second main surface parallel to the first main surface, a pressure-sensitive resistor formed on the first main surface, and a joining assist pattern formed on the first main surface, and a pressing member bonded to the bonded area on the first main surface and compressing the Si device in a thickness direction. The pressure-sensitive resistor has a first bonded section which is placed within the bonded area of the first main surface and is bonded to the pressing member. The joining assist pattern has a second bonded section which is made of the same material as the first bonded section of the pressure-sensitive resistor and is placed within the bonded area of the first main surface and is bonded to the pressing member. | 04-01-2010 |
20100083740 | COMPRESSION SENSOR GASKET AND METHOD OF CONSTRUCTION - A compression sensor gasket and method of construction thereof is provided. The gasket has a body with opposite sealing surfaces and a through passage configured to align with a chamber to be sealed. A through opening extends between the sealing surfaces to the through passage and has an annular chamfered surface. A pressure sensor assembly having a housing and a pressure sensor extending at least partially through the housing is disposed in the through opening. The pressure sensor has a pressure sensor tip configured to sense pressure within the chamber to be sealed. The housing has an outer annular tapered surface configured to register in radial alignment with the chamfered surface to facilitate forming a hermetic seal between the pressure sensor assembly and the gasket body. | 04-08-2010 |
20100083741 | COMBUSTION CHAMBER PRESSURE SENSOR - A combustion chamber pressure sensor for an internal combustion engine, having a sensor body able to be inserted into a receiving bore of the internal combustion engine, which sensor body has on the side of the combustion chamber a sealing device for sealing the sensor body in the receiving bore, and which sensor body is provided with affixation means for fixing the combustion chamber pressure sensor in place inside the receiving bore. The sealing device includes at least one separately produced heat-resistant elastic sealing element, which is disposed around an outer jacket of the sensor body. | 04-08-2010 |
20100300185 | COMPRESSION SENSOR GASKET ASSEMBLY AND METHOD OF CONSTRUCTION - A compression sensor gasket assembly and method of construction thereof is provided. The compression sensor gasket assembly includes a gasket body having opposite sealing surfaces extending between an outer periphery and an inner periphery with the inner periphery bounding a through opening. The gasket body has a passage extending from the outer periphery through the inner periphery and a pressure sensor assembly releasably attached to the gasket body in the passage and being configured to sense pressure within the through opening. The pressure sensor assembly can be removed from the gasket body in service without having to disassemble clamped members from clamped abutment with the gasket assembly. Further, the pressure sensor assembly can be routed over a curved path extending between the outer and inner peripheries to navigate about features that may be present in the gasket body. | 12-02-2010 |
20110226047 | MAGNETICALLY CODED PRESSURE DETECTION APPARATUS - An apparatus for measuring pressure comprises a housing and an actuator pressure sealed to the housing and having a shaft. The actuator is configured to be in pressure communication with a volume of gas or liquid. Upon a change in pressure, the actuator is displaced at least partially in the axial direction. A sensor detects axial displacement of a magnetically encoded target upon the change in pressure in the volume. A device for measuring pressure in an engine cylinder comprises a valve in pressure communication with an engine cylinder. The valve stem has a magnetic coding located adjacent a sensor. Axial displacement of the stem under cylinder pressure is detected and pressure is obtained. | 09-22-2011 |
20110239749 | CYLINDER HEAD COMPRESSION SENSOR GASKET ASSEMBLY, METHOD OF CONSTRUCTION THEREOF AND METHOD OF SERVICING A PRESSURE SENSOR ASSEMBLY IN A CYLINDER HEAD COMPRESSION SENSOR GASKET ASSEMBLY - A cylinder head compression sensor gasket assembly includes a gasket body having a sealing portion configured to be clamped between an engine block and a cylinder head. The sealing portion has a plurality of through openings configured to register with separate cylinder bore in the engine block wherein the sealing portion establishes a gas-tight seal about the through passages. A plurality of pressure sensor assemblies are attached in sealed engagement with the gasket body with at least one of the pressure sensor assemblies being configured to sense pressure within a separate one of the through openings. An electrical connector is supported on the gasket body radially outwardly from the sealing portion. The electrical connector is configured in electrical communication with each of the pressure sensor assemblies. Accordingly, the electrical connector is accessible without having to disassemble the gasket body from being clamped between the cylinder head and the engine block. | 10-06-2011 |
20110271748 | COMBUSTION PRESSURE SENSOR - A combustion pressure sensor ( | 11-10-2011 |
20120060595 | METHOD AND CIRCUIT FOR PROCESSING A SIGNAL SUPPLIED BY A PIEZOELECTRIC SENSOR, AND PRESSURE-MEASURING DEVICE FOR PISTON ENGINE - A method and a circuit for processing a signal supplied by a piezoelectric sensor ( | 03-15-2012 |
20120079878 | COMPRESSION SENSOR GASKET ASSEMBLY AND METHOD OF SERVICING A COMBUSTION PRESSURE SENSOR WITHIN A GASKET ASSEMBLY - A compression sensor gasket assembly includes a gasket body having opposite substantially planar sealing surfaces configured for sealing abutment with an engine block and a cylinder head. The gasket body has at least one through opening configured to register with a cylinder bore and a passage extends from an outer periphery of the gasket body between the opposite sealing surfaces. The gasket assembly includes a mounting flange fixed to the gasket body. The mounting flange extends outwardly from one of the substantially planar sealing surfaces. A pressure sensor assembly extends through the passage, and a mounting member is releasably fixed to the mounting flange to operably fix the pressure sensor assembly to the gasket body. The pressure sensor assembly is readily accessible, such that during service the pressure sensor assembly can be removed and serviced without having to remove the cylinder head from the engine block. | 04-05-2012 |
20120198924 | Cylinder Pressure Sensor - The invention relates to a cylinder pressure sensor comprising a housing for clamping into a cylinder head, which carries a sensor element at a front end. According to the invention, the cylinder pressure sensor has a conical seat at the front end thereof. | 08-09-2012 |
20120222472 | COMPRESSION SENSOR GASKET ASSEMBLY - A compression sensor gasket assembly includes a pressure sensor assembly having an annular, radially extending pressure sensor seal seat and a gasket body having opposite sides extending between an opening configured to register with a cylinder bore of an internal combustion engine and an outer periphery. The opposite sides of the gasket body are spaced from one another adjacent the opening by a known thickness and a circumferentially enclosed passage extends between the opposite sides into the opening. The passage has an annular, radially extending gasket seal seat. The gasket seal seat is formed within a distance equal to or less than about 3 times the thickness of the gasket body and the pressure sensor assembly is received at least in part the passage with the sensor seal seat being brought into operably sealed engagement with the gasket seal seat. | 09-06-2012 |
20120227477 | Pressure-Measuring Plug for a Combustion Engine - A pressure-measuring plug comprises a plug body and a sensing structure. The plug body comprises a threaded plug body part comprising an external thread for screwing the plug body into a cylinder of the combustion engine, a sealing plug body part forming a tip of the plug and configured for providing a seal between the plug body and the combustion engine. The plug body further comprises a sensing body part positioned between the threaded plug body part and the sealing plug body part. The sensing body part is made from one piece and comprises a cylindrical body part; a moving part and the sensing structure. | 09-13-2012 |
20120234084 | 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 includes a sensor housing which is designed to be at least partially introduced into a combustion chamber of the internal combustion engine. On the combustion chamber side, the sensor housing has an opening which is closed by at least one diaphragm. At least one mechanical-electrical transducer element is accommodated inside the sensor housing. Furthermore, at least one transmission element is provided, which is implemented separately from the sensor housing, for transmitting a deformation of the diaphragm to the mechanical-electrical transducer element. | 09-20-2012 |
20130036803 | CYLINDER INNER PRESSURE DETECTOR FOR INTERNAL COMBUSTION ENGINE - An cylinder inner pressure detector of an internal combustion engine includes: a reference voltage output circuit for outputting a reference voltage having a level, which is selected among multiple levels according to a switching signal; a level shift circuit for shifting a level of a sensor signal of an inner pressure sensor by a selected level of the reference voltage toward a signal potential side corresponding to a low pressure side of cylinder inner pressure; a first A/D converter circuit for converting the shifted sensor signal from an analog signal to a digital signal; and a controller for outputting the switching signal, which provides the reference voltage such that the reference voltage has the level on the signal potential side corresponding to the low pressure side from an offset voltage, and for detecting the cylinder inner pressure based on the digital signal output from the first A/D converter. | 02-14-2013 |
20130042674 | COMPRESSION SENSOR GASKET ASSEMBLY AND METHOD OF CONSTRUCTION THEREOF - A compression sensor gasket assembly includes a gasket body and a pressure sensor assembly having a sensor tip and an externally threaded portion. The gasket body has opposite sides extending between an opening configured to register with a cylinder bore of an internal combustion engine and an outer periphery. A notch extends into the outer periphery to a recessed surface. A sensor receptacle configured for at least partial receipt of the pressure sensor assembly extends from the recessed surface to the opening. A nut is disposed in the notch with internal threads of the nut being aligned for threaded engagement with the externally threaded portion of the pressure sensor assembly. The nut has bifurcated fingers extending laterally outwardly from an outer surface. The bifurcated fingers have inner surfaces bonded to at least one of the opposite sides of the gasket body to facilitate proper orientation of the pressure sensor assembly. | 02-21-2013 |
20130125634 | MECHANICAL PACKAGING TECHNIQUE OF ATTACHING MEMS AND FLEX CIRCUIT - The present invention disclosed provides for a rugged, compact sensing device for various implementations including those of automotive, marine, and other combustion technologies that require low cost accurate pressure sensing during internal combustion engine process. In one or more aspects of the present invention, a MEMS sensor connection with a flexible circuit is presented and the communication of which is preferably achieved through the use of wire bond technology. | 05-23-2013 |
20130333456 | COMBUSTION PRESSURE SENSOR - A combustion pressure sensor ( | 12-19-2013 |
20140102185 | Device for sensing a pressure, particularly a pressure in a combustion chamber of an internal combustion engine - A device for sensing a pressure, particularly in a combustion chamber of an internal combustion engine. The device has a housing and an adapter element, secured in the housing, for accommodating a sensor module. The sensor module includes a transmission element, a sensor element and a supporting element, the sensor module being supported by way of the transmission element on a compensation member which is joined to the adapter element, and by way of the supporting element on a fixing element. At an end face pointing toward the sensor module, the compensation member is provided with a circular recess, in which the transmission element is accommodated in centered fashion. | 04-17-2014 |
20140109661 | PRESSURE GAUGE - The invention relates to a pressure gauge for measuring the pressure in a combustion chamber of an engine, comprising a housing, a tappet, which is movable in the housing in an axial direction under the action of combustion chamber pressure, a sensor for detecting an axial displacement of the tappet, and a force transmitter, in order to transmit a force loading the tappet to the sensor. In accordance with the invention, the force transmitter has at least one damping section for damping flexural vibrations, at which its flexural rigidity is reduced. | 04-24-2014 |
20140130585 | PRESSURE-MEASURING PLUG FOR A COMBUSTION ENGINE - The invention relates to a pressure-measuring plug for a combustion engine comprising a plug body with a body tip section facing in use the combustion chamber and comprising a passage, a ring-shaped sensing structure comprising an outer section, an inner section and an annular diaphragm, the plug body being attached to the outer section, a circular membrane comprising an outer part coupled to the outer section and an inner part coupled to the inner section, the membrane provides a sealing protecting the annular diaphragm against the harsh environment in a combustion chamber; and, a plug chamber formed by the circular membrane and the body tip section wherein the passage of the body tip section provides an open connection between the plug chamber and the combustion chamber. The passage is part of a channel structure which functions as a soot filter. | 05-15-2014 |
20140352415 | MEASURING PLUG - Disclosed is a pressure-measuring plug ( | 12-04-2014 |
20150027213 | Pressure-Measuring Device with additional diaphragm - A pressure-measuring device for recording a pressure in a combustion chamber of an internal combustion engine, having a force transmission body, situated in a housing, which is exposed to the combustion chamber and which transmits the combustion chamber pressure to a pressure-measuring unit at least indirectly by an axial motion, and having a flexible diaphragm, which is situated between the force transmission body and the housing. The flexible diaphragm is configured to be resilient to implement the axial motion of the force transmission body within the housing. A flexible additional diaphragm is connected ahead of the flexible diaphragm on the combustion chamber side, which seals the flexible diaphragm from the combustion chamber. | 01-29-2015 |
20150059455 | IN-CYLINDER PRESSURE MEASUREMENT UTILIZING A MAGNETO-ELASTIC ELEMENT FOR MEASURING A FORCE EXERTED ON AN ENGINE VALVE ASSEMBLY - A force sensor can include a magnetic field generator, a magnetic flux return, and a magneto-elastic layer. The magnetic flux return can extend along a first portion of at least one pathway of magnetic flux generated by the magnetic field generator. The magneto-elastic layer can be operable to be in contact with a surface subjected to force and thereby strained. The magneto-elastic layer can extend along a second portion of the at least one pathway of magnetic flux distinct from the first portion. | 03-05-2015 |
20150114095 | COMBUSTION PRESSURE SENSOR AND METHOD OF MANUFACTURING THE SAME - A combustion pressure sensor having a tubular housing extending in an axial direction DX, a displacement member disposed within the housing, and a tubular connection member which elastically connects the displacement member to the housing. The combustion pressure sensor has a housing weld W | 04-30-2015 |
20150128687 | COMBUSTION PRESSURE DETECTION DEVICE, AND INTERNAL COMBUSTION ENGINE EQUIPPED WITH COMBUSTION PRESSURE DETECTION DEVICE - A combustion pressure detection device for detecting combustion pressure inside a combustion chamber of an internal combustion engine, the combustion pressure detection device being attachable to a communication hole communicating an inside of a cylinder head configuring the combustion chamber and an outside thereof, the combustion pressure detection device includes: a housing; and an piezoelectric element and the like that are located in the housing and detect the combustion pressure. The housing has an attachment structural part attachable to the communication hole, the attachment structural part has a third outer peripheral surface to which a first seal member is attachable, and a inclined surface to which a second seal member is attachable, and the inclined surface is arranged at a front end side in a direction to the combustion chamber relative to the third outer peripheral surface when the combustion pressure detection device is attached to the communication hole. | 05-14-2015 |
20150135811 | DIAPHRAGM FOR A PRESSURE-MEASURING DEVICE - Described is an elastic diaphragm for a pressure-measuring device for ascertaining a pressure in a combustion chamber of an internal combustion engine, especially a self-ignitable internal combustion engine, the diaphragm being accommodated in a housing of the pressure-measuring device in order to separate a pressure chamber from a cavity and in order to seal the housing from the pressure to be measured. The diaphragm has a pressure-application region. Furthermore, the diaphragm is developed in the shape of a ring and in cross-section has a U-shape that is open toward the cavity; the region of the diaphragm on which the pressure is acting is geometrically made up of two interconnected quarter circles, so that the pressurized region has a structure that is self-supporting with respect to the arising combustion pressure loads. | 05-21-2015 |
20150323406 | MEASUREMENT AMPLIFYING CIRCUIT FOR PIEZOELECTRIC SENSOR POSITIONED IN AN INTERNAL COMBUSTION ENGINE - A measurement amplifying circuit ( | 11-12-2015 |
20160033365 | SUPPORT FOR AN ELECTRONIC MODULE OF A PRESSURE MEASUREMENT SENSOR - A support ( | 02-04-2016 |
20160076971 | PRESSURE SENSOR - A pressure sensor including a rod-shaped member, a tubular housing, a variable member and a pressure measuring element. The variable member is entirely disposed within the housing, is connected to the housing and the rod-shaped member, and deforms when the rod-shaped member is displaced relative to the housing along an axial direction. The variable member includes a first portion connected to the rod-shaped member, a second portion connected to the housing, and a bent portion which connects the first portion and the second portion to each other and has a bent shape. A portion of the second portion is a pressure receiving portion which displaces the rod-shaped member in the axial direction when receiving a pressure. The pressure receiving portion of the second portion has a substantially uniform thickness, and the thickness of the pressure receiving portion of the second portion is larger than that of the first portion. | 03-17-2016 |
20160146702 | METHOD FOR DETECTING SURGE LEVEL IN VEHICLE - A method for detecting a surge level in a vehicle based on a combustion pressure in a cylinder includes determining an IMEP parameter which determines stability of combustion according to a covariance of an IMEP. A PPP parameter, which varies the covariance of the IMEP and determines stability of combustion according to a variance in an angle of rotation of a crank when the combustion pressure reaches the highest point, is determined. A BD parameter, which varies both the the covariance of the IMEP and the angle of rotation of the crank and determines the stability of combustion according to a variance in the angle of rotation of the crank when a set range of amount of fuel is burned in the cylinder, is determined. An RPM parameter, which determines a surge level according to a variance in an RPM of an engine, is determined. | 05-26-2016 |
073114190 | Combined with spark plug | 23 |
20080229815 | Sensor system for measuring pressure - A sensor system for measuring the pressure in the combustion chamber of an internal combustion engine, by the use of which a high measuring accuracy may be achieved, based on high measuring sensitivity and great thermal stability. In addition, the construction of the sensor system makes possible great system flexibility, and particularly very space-saving installation in the combustion chamber of an internal combustion engine. For this purpose, the sensor system includes at least one electrically conductive spring element and at least one electrically conductive counter-element,
| 09-25-2008 |
20090301178 | Measuring device - The invention relates to a measuring device ( | 12-10-2009 |
20100064785 | OPTICAL PRESSURE SENSOR HAVING AT LEAST TWO OPTICAL FIBERS - The invention relates to an optical pressure sensor based on light intensity measurements and comprises at least one membrane and two parallel optical fibers. At lest one first fiber has a fiber end and a light emission surface for emitting light in the direction of the membrane. At least one second fiber has a fiber end having a light admission surface for receiving the light reflected from the membrane and transmitting that reflected light. The light emission surface and the light admission surface of the two fibers are disposed facing away from each other. This changes the optical path of the light during use such that the light portion received by the at least one second fiber is very sensitive to the position of the membrane. | 03-18-2010 |
20100116039 | SPARK PLUG INCORPORATING A PRESSURE SENSOR - The spark plug comprises:—a central electrode ( | 05-13-2010 |
20100186489 | SPARK PLUG WITH COMBUSTION SENSOR - A spark plug assembly has a ceramic insulator with a metal outer shell surrounding at least a portion of the insulator. A ground electrode is operatively attached to the outer shell and a center electrode having an elongate body extends through the insulator. The center electrode and the ground electrode provide a spark gap. A force sensor is received about the insulator. An annular inner shell is received between the outer shell and the insulator, wherein the inner shell has a surface configured to confront the insulator along an axial direction. | 07-29-2010 |
20100186490 | SPARK PLUG WITH INTEGRAL COMBUSTION SENSOR AND ENGINE COMPONENT THEREWITH - A spark plug assembly includes an insulator having an upper shoulder and a lower shoulder and a metal annular outer shell having an outer surface and a cavity bounded by an inner surface. The inner surface has a flange extending inwardly to confront the lower shoulder of the insulator. The outer shell has a proximal end and an opposite fastening end. The fastening end has an external threaded region and an annular sealing seat extending outwardly adjacent the flange. The outer shell has an annular shoulder extending radially between the sealing seat and the proximal end. The proximal end has a turnover axially confronting the upper shoulder of the insulator. A sensor assembly is received about the outer shell between the shoulder of the shell and the turnover. The sensor assembly is responsive to send a signal in response to relative axial movement between the insulator and the outer shell. | 07-29-2010 |
20100251808 | PART FOR MEASURING FORCES OR PRESSURES, AND SENSOR COMPRISING SUCH A PART - A part to be mounted into force or pressure sensors includes an annular measuring element made of piezoelectric material. First and second electrodes rest against respective opposite sides of the measuring element and are provided with wires. An electrically insulating transmission member laterally adjoins the first electrode, across from the measuring element. Another electrically insulating insulation member laterally adjoins the second electrode, across from the measuring element. All said components are mounted within the part in such a way as to be centered relative to each other. The external face of the transmission member and the external face of the insulation member which face away from and run parallel to the electrodes are designed in a very planar manner, having a levelness of less than 10 μm. | 10-07-2010 |
20100300186 | Pressure-Measuring Device - A pressure-measuring device is to be placed in a chamber of an internal combustion engine. The pressure-measuring device has a housing, a force-transmission element projecting out of the housing, and a pressure sensor disposed in an interior chamber of the housing. On the one hand, the pressure sensor is braced on a fixation element. On the other hand, to detect a pressure prevailing inside the chamber, the pressure sensor is operatively connected to the force-transmission element. The pressure sensor has a straight-through recess through which an electrical line is routed. In addition, a positioning element is provided, which has a straight-through recess in a guide region, the electrical line being routed through the straight-through recess, and the positioning element having a reduced thickness in the guide region. This makes it possible to reduce friction of the electrical line in the guide region at the straight-through recess, so that the pressure measurement is improved. | 12-02-2010 |
20110088460 | PRESSURE SENSOR FOR MEASUREMENTS IN A CHAMBER OF AN INTERNAL COMBUSTION ENGINE - A pressure sensor for measurements in a chamber of an internal combustion engine, in particular a pressure-measuring glowplug, comprises a housing, a pressure element for picking up a pressure, and a measuring element arranged in the housing downstream of the pressure element in the direction of the pressure and having a sensor element and a diaphragm. This diaphragm is permanently connected at its first end to the pressure element, and at its second end it is directly or indirectly permanently connected to the housing at a connection, with the pressure element being supported on the measuring element via the diaphragm. | 04-21-2011 |
20110146392 | Pressure Measuring Glow Plug - The invention relates to a pencil-type glow plug, in particular for a self-igniting internal combustion engine. The plug includes at least one plug base with at least one essentially bar-shaped heating element, which projects on one end from the plug base, and at least one measurement element, the heating element and the measurement element being integrally bonded and/or force-locked and/or form-locked. | 06-23-2011 |
20110146393 | Device and Method for Determining Combustion Chamber Pressure - The invention relates to a device and a method for determining combustion chamber pressure, having at least one glow filament, at least one measuring element, at least two spring membranes, and at least one tubular base. | 06-23-2011 |
20110197666 | Pressure Measuring Glow Plug - The invention relates to a device for determining the combustion chamber pressure. The device includes a tubular base, a glow filament which projects from the tubular base, and at least one sensor element arranged in the tubular base. The invention is characterized in that the sensor element inserted between a front face of the glow filament and a prestressing element that is welded to the tubular base. | 08-18-2011 |
20130312505 | SPARK PLUG WITH COMBUSTION SENSOR - A spark plug assembly has a ceramic insulator with a metal outer shell surrounding at least a portion of the insulator. A ground electrode is operatively attached to the outer shell and a center electrode having an elongate body extends through the insulator. The center electrode and the ground electrode provide a spark gap. A force sensor is received about the insulator. An annular inner shell is received between the outer shell and the insulator, wherein the inner shell has a surface configured to confront the insulator along an axial direction. | 11-28-2013 |
20130319094 | GLOW PLUG WITH COMBUSTION PRESSURE SENSOR - A seal member ( | 12-05-2013 |
20140000353 | GLOW PLUG WITH PRESSURE SENSOR | 01-02-2014 |
20140076039 | GLOW PLUG - A glow plug includes: a heater power-conduction shaft that supplies power to a heater; a pressure detection element that is provided in an axial-direction end portion of the heater power-conduction shaft and converts pressure that the heater power-conduction shaft receives in the axial direction into an electrical signal; a first insulation member that surrounds an outer periphery of the pressure detection element with respect to the axis, and allows a signal output terminal of the pressure detection element to protrude toward an outer peripheral side of the axis; a power supply wire that is provided on an outer peripheral side of the first insulation member with respect to the axis, and is connected to the heater power-conduction shaft to supply power to the heater; a signal processing circuit that is provided on an outer peripheral side of the power supply wire with respect to the axis, and is connected to the signal output terminal to process an electrical signal of the pressure detection element; and a second insulation member that is provided between the power supply wire and the signal processing circuit, and insulates the signal processing circuit from the power supply wire. | 03-20-2014 |
20140216145 | COMBUSTION CHAMBER PRESSURE GAUGE - A combustion chamber pressure gauge for an internal combustion engine, comprising a housing tube, a plunger, which is movable in an axial direction in the housing tube under the effect of combustion chamber pressure against a restoring force, and comprising a seal, which is disposed between the plunger and the housing tube, and comprising a sensor for detecting an axial displacement of the plunger. The sensor is decoupled from thermally induced expansions or contractions of the housing tube, in that the sensor is attached to a carrier, which is suspended in the housing tube, and the plunger is movable relative to the carrier under the effect of combustion chamber pressure. | 08-07-2014 |
20150040651 | PRESSURE-MEASURING GLOW PLUG - A pressure-measuring glow plug has a heating pin for igniting a combustion mixture of an internal combustion engine and a pressure sensor for detecting a combustion chamber pressure of the internal combustion engine. The pressure-measuring glow plug has a contacting unit which includes a carrier for accommodating a signal processing unit and a plug connection having connecting contacts in a plug housing. A glow module housing for accommodating the heating pin and the pressure sensor and an electronic module housing for accommodating the carrier are provided. The electronic module housing is connected at a glow module-sided connecting location to the glow module housing and, at a plug-sided connecting location, to the plug housing. | 02-12-2015 |
20150059456 | Spark Plug for a Gas-Powered Internal Combustion Engine - A spark plug for a stationary, gas-powered internal combustion engine, having a metallic body, an insulator mounted in a passage of the body, a center electrode passing through the insulator, a ground electrode mounted on the body that, together with the center electrode, forms a spark air gap, and a cap attached to the body. The cap shields the center and ground electrodes from the combustion chamber after the spark plug is installed in a combustion chamber of the internal combustion engine, and that, together with the body of the spark plug, forms a prechamber in which the center and ground electrodes are located. The cap has at least one opening that permits gas exchange between the prechamber and the space outside of the prechamber. A sensor receiving space is provided in the body of the spark plug, which space opens into the prechamber and serves to receive a pressure sensor in a replaceable manner, and a connecting channel for routing a connecting line of the pressure sensor leads from the sensor receiving space to the end of the body opposite the cap. | 03-05-2015 |
20160061683 | PRESSURE SENSOR - A variable member is connected to a rod-shaped member and connected to a tube portion to ensure airtightness within a housing, and deforms when the rod-shaped member is displaced relative to the housing along an axial direction. A position of the connection between the tube portion and the variable member in the axial direction is a position shifted from a rear end of a gap toward a front side by a predetermined length or a position at the front side with respect to the position shifted by the predetermined length. The predetermined length is a length which is 50% of a length of the gap in the axial direction. | 03-03-2016 |
20160153861 | DEVICE FOR DETECTING THE COMBUTION CHAMBER PRESSURE IN AN INTERNAL COMBUSTION ENGINE | 06-02-2016 |
20160186712 | SENSOR MODULE FOR A PRESSURE-MEASURING SHEATHED-ELEMENT GLOW PLUG - A sensor module having a sensor housing, at least one piezoelectric converter element that is disposed in the sensor housing, and at least one insulating member that is disposed in the sensor housing alongside the converter element. The insulating member has on its outer periphery at least one recess in which a contacting system of the converter element extends. A pressure-measuring glow plug having a sensor module of this kind is also described. | 06-30-2016 |
073114210 | Washer type | 1 |
20140130586 | PRESSURE-MEASURING PLUG FOR A COMBUSTION ENGINE - Disclosed is a pressure-measuring plug for a combustion engine. The pressure-measuring plug comprises a plug body and a ring-shaped sensing structure. The plug body comprises an external thread for mounting the plug body into a cylinder head of the combustion engine. The ring-shaped sensing structure comprises an outer section and an inner core. A proximal end of the plug body is attached to the outer section. The inner core comprises a through hole for receiving a rod-shaped element. The ring-shaped sensing structure allows the inner core to move relatively to the outer section along a cylinder axis of the ring-shaped sensing structure. The inner core further comprises an internal thread for mounting in the through hole a rod-shaped element with an external thread. | 05-15-2014 |