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WO/1998/053198A1 |
The invention relates to a method for identifying knocking combustion in an internal combustion engine with an alternating current ignition system, wherein the duration of the combustion period of the ignition spark and the ignition ener...
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WO/1998/052062A1 |
The invention relates to a measuring device for electrically decoupled function testing of systems comprising a conductor through which electricity flows. A mechanical-electric transducer, specially in the form of a piezo ceramic element...
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WO/1998/047008A2 |
An air data measurement system (10) includes a device for sensing air pressure outside an aircraft, a pressure transducer (14) in fluid communication with the air pressure sensing means and having a piezoresistive bridge attached on a fl...
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WO/1998/043056A1 |
The invention relates to a device for determining the pressure and temperature in the suction pipe of an internal combustion engine with a temperature sensor (50) and pressure sensor (30) positioned in a common housing (10), said pressur...
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WO/1998/041911A1 |
A triple-redundant altitude alert system includes a digital air data computer (400), redundant pilot and copilot altimeters (100) and airspeed indicators (200), and an altitude alerter (300). The computer, altimeters, and airspeed indica...
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WO/1998/036159A1 |
The head (81) of a gas shuttle valve presents on its front face a valve seat (84) which is designed preferably, at least partly, as a membrane (90) and which, owing to the pressure prevailing inside the combustion chamber (83), undergoes...
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WO/1998/036280A1 |
The invention concerns a sensor comprising a) a cylindrical base (1) formed by an axial shaft (2) projecting from a ring-shaped collar (3), both traversed by an axial bore (4); b) a washer (6) made of piezoelectric material passing on th...
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WO/1998/035210A1 |
Fuel injectors (10) for internal combustion engines are modified and equipped with fiber optic fuel pressure sensors (12) and fiber optic combustion pressure sensors (14). The combustion pressure sensors (14) are located in separate chan...
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WO/1998/028726A1 |
The invention concerns a circuit arrangement for interference-free signal evaluation by means of which output signals from sensors can be evaluated, each sensor requiring two inputs. If signals are to be evaluated relative to earth, only...
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WO/1998/027412A1 |
A pressure sensor inlet adapter comprises a body provided with an inlet bore and an outlet bore with a constriction between the two.
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WO/1998/022787A1 |
The present invention pertains to a pressure and temperature sensor especially designed to determine the pressure and the temperature levels inside a pressure chamber of an injection moulding system or a similar system, a pressurizing me...
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WO/1998/017988A1 |
An optical pressure sensor assembly integrated with a spark plug (16) and spark plug boot (12). The pressure sensor comprises an optical fiber (34) with a pressure diaphragm (36) at the tip to sense pressure and pressure changes within t...
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WO/1997/040356A1 |
This invention concerns a device for recognizing knock and controlling a combustion engine in which the output signals of knock sensors are first sent to a preprocessing stage for signals (14) which extracts characteristic features from ...
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WO/1997/031251A1 |
Spark plug (20) integrated fiber optic combustion pressure sensors (30, 36) are configured to decrease heat and fatigue damage to the critical diaphragm (40) and fiber tip (37). A cup-shaped diaphragm (40) having non-uniform thickness re...
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WO/1997/027400A1 |
The invention relates to a measuring circuit for sensing ionisation within a combustion chamber of an engine. The measuring circuit is arranged in the grounded end of the secondary winding (5) of an ignition coil (2), and includes a volt...
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WO/1997/026513A1 |
The invention relates to a pressure wave sensor consisting of a piezoelectric element (7) secured in a cylindrical housing (10), where the piezoelectric element (7) is pressed by a spring (4) against a front surface of the housing (10). ...
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WO/1997/024527A1 |
The invention relates to a method for combustion engines capable of sorting out false indications of a knocking condition, and in a closed loop manner influencing the control measures initiated in order to cease the knocking condition. W...
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WO/1997/024592A1 |
Proposed is a method of detecting knocking, engine noise being captured by at least one clocking sensor which supplies a signal to a signal-processing circuit for detecting the occurence of knocking. The integral (UINT) of the captured s...
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WO/1997/023771A1 |
The invention relates to a sealing unit for a fuel pressure sensor to seal an at least approximately plane joint between the sensor and a component supporting it via a thread system, in which a circular sealing disc with a central drilli...
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WO/1997/021084A1 |
The method includes the steps of generating a detonation signal (D) related to the intensity of the vibration on an engine block; wide-band filtering the detonation signal (D); rectifying the filtered detonation signal (D); integrating t...
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WO/1997/014025A1 |
A linear type knock sensor (100) is disclosed. It has: a housing assembly (126) adapted to being connectable with an engine and having output leads for providing an output signal to an electronic interface; a transducer assembly having a...
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WO/1997/009567A1 |
A cylinder inner pressure detector for diesel engines, having a simple construction and a high operation efficiency and capable of saving a space and detecting the inner pressure of a cylinder with a high accuracy; and a method of using ...
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WO/1996/001415A1 |
A combustion pressure measuring system for a multi-cylinder internal combustion engine comprises a plenum chamber (26, 30), pressure tappings (24) connecting each of a plurality of combustion chambers (12) of the engine to the plenum cha...
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WO/1996/000889A1 |
A knock detection method and apparatus integrates a knock sensor signal (107) over a first period and provides a first integrated knock sensor signal (119), and integrates the knock sensor signal (107) over a second period and provides a...
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WO/1995/033983A1 |
An improved fiberoptic pressure sensing system (8) is disclosed by tapering the tip end (14) of an optical fiber (12) or alternatively, by tapering or bundling a fiber or group of fibers (98) within a connector (92). By selectively-joini...
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WO/1995/021384A1 |
An accelerometric sensor (1) for measuring pinking in an internal combustion engine, consisting of a base (10) in the form of a sleeve (11) with a flange (12) extending therefrom and supporting at least one stacked piezoelectric ring (2)...
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WO/1995/010032A1 |
In an engine knock detection process, the knock threshold is weighted or limited. For that purpose, a normal range (NB) of the reference level is defined and when deviations from said normal range (NB) occur the knock threshold (KS) is m...
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WO/1995/008760A1 |
The description relates to a device for fault recognition in connection with a knock-detecting device in an internal combustion engine in which the sensor output signal is compared with a standard reference level depending on the rotatio...
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WO/1995/004262A1 |
A knock sensor adapted to detect high-frequency knocking, which can be easily manufactured. A signal processor (10) and a sensor element (11), composed of a semiconductor and weighing less than one gram, are mounted on a fixed pedestal (...
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WO/1994/029686A1 |
The invention concerns a pressure transducer (11) for the determination of the pressure in combustion chambers of internal-combustion engines, the transducer member (124) having an approximately centrally located depression (35). The pis...
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WO/1994/029687A1 |
The invention concerns a pressure transducer (11) for the determination of the pressure in combustion chambers of internal-combustion engines, a piston (18) being located in a bore (12) in the transducer housing (10) with one end resting...
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WO/1994/019595A1 |
A reciprocating piston engine, in particular a single-cylinder Diesel engine (2), has an air filter (1) in the suction pipe (3). To service the same, a pressure gauge (13) is arranged downstream of the filter cartridge (7), in the direct...
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WO/1994/018443A1 |
The invention relates to a method and apparatus for controlling the injection of fuel into the combustion chamber of an internal combustion engine. Measuring of the combustion pressure of a cylinder is effected by using a piezoelectric w...
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WO/1994/011632A1 |
A knocking noise avoiding device for an engine with a variable valve driving mechanism for securely preventing erroneous ignition timing lag process due to valve seating noises from a valve driving system of the engine with a variable va...
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WO/1994/011718A1 |
The joint comprises a first joint component (1) having axial aperture and a second joint component (4) having an axial aperture arranged coaxially with the aperture in the first joint component. Joint components (1) and (2) have a gasket...
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WO/1994/003785A1 |
The invention relates to an adaptor (10) for mounting a pressure sensor (12) for a high temperature system comprising a sensor carrier means (40) with an axis (26) of elongation, said carrier means (40) being provided at one axial end th...
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WO/1994/002817A1 |
A pressure sensor (1) for pressure measurement in a combustion chamber or the like includes a photoelastic medium (6) such as quartz means for directing polarised light through said photoelastic medium (6) and detector means (12) for det...
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WO/1993/020424A1 |
The invention concerns a method for detecting knocking in an internal-combustion engine in which the signals from a knock sensor are fed to a signal processor. The invention also concerns a device for carrying out the process. To this en...
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WO/1993/015384A1 |
The description relates to a device for detecting knocking in an internal combustion engine in which the output signals of a knock sensor, e.g. a structure-borne noise sensor, are amplified, filtered, rectified and integrated and then di...
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WO/1993/014387A1 |
A method of accurately determining the top dead centre position of a piston (11) and a cylinder (12) of a reciprocating type of internal combustion engine (10) when inoperative which has a crankshaft (13) driven in use by the piston (11)...
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WO/1993/010430A1 |
Proposed is a silicon chip for use in a force-detection sensor. The chip has circuits (22), piezo-resistive elements (21), an intermediate element (36) and a force-application zone (23). The chip (20) is mounted on a support (38). The pi...
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WO/1993/002341A1 |
A knock sensor for direct or indirect attachment to an internal combustion engine has a housing (10) with a pressure sleeve (11), on the outside of which are fitted a piezoceramic plate, a seismic mass (16) acting thereon, the contact pl...
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WO/1992/021950A1 |
The proposal is for a process for pinking detection used for the better selection of the pinking detection factors. This process comprises the introduction of application-specific assessment factors (f) and the multiplication of the meas...
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WO/1992/019947A1 |
The proposal is for a process for detecting knocking combustion in an internal combustion engine implemented with the aid of a knock sensor and a reference mark on the engines crankshaft. In the process, on the assessment of signals from...
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WO/1992/015851A1 |
In a pressure sensor (11), the force is introduced via a membrane (14) and a plunger (18) onto a piezoresistive measuring element (21). The measuring element (21) is part of a monocrystalline silicon chip (20). The piezoresistive measuri...
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WO/1992/010733A2 |
A method and apparatus for comparing torsional stress/strain states of a power transmitting member of an internal combustion engine to detect an abnormal combustion condition, including misfire, knock or roughness. Statistical processing...
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WO/1992/008112A1 |
An internal combustion engine has a sensor mounted within a combustion chamber of the engine. The sensor includes or forms part of a sealing plug fitted into a bore (22) in the wall (16) of the combustion chamber and urged by the combust...
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WO/1992/005365A1 |
A spark-ignition engine (10) is disclosed that incorporates a relatively unlimited number of spark sources within each combustion chamber (26), without conventional spark plugs being required. The engine (10) includes a planar circuit mo...
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WO/1992/001914A1 |
In the pressure sensor (11) proposed, the pressure is transmitted through a diaphragm (14) and a punch (18) to a piezo-resistive sensor element (19). The sensor element (19) is printed on the support of a hybrid circuit (21). The hybrid ...
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WO/1992/001915A1 |
In the pressure sensor (11) proposed, the pressure is transmitted through a diaphragm (14) and a punch (18) to a piezo-resistive sensor element (19). Since no precise mechanical alignment is necessary between the diaphragm (14) and the p...
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