COMBUSTION-CHAMBER PRESSURE TRANSDUCER AND MANUFACTURE THEREOF

PROBLEM TO BE SOLVED: To provide a transducer having a pressure-sensitive member producing an electric signal quickly in response to the pressure of combustion chamber. SOLUTION: A transducer housing to be fixed to a port in a combustion chamber is provided with a metal diaphragm 34 exposed to combu...

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Bibliographische Detailangaben
Hauptverfasser:	JIYON ARUBAATO KOBUACHIKU, BURUUSU MAIKERU HATSUTON, DONARUDO REI HEFUNAA, DONARUDO MAIKERU SUTAUTO, ROORENSU JIYOZEFU RAICHIEKU, AARIIN MARII KURAMU
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MEASURING MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE MECHANICAL ENGINEERING PHYSICS TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a transducer having a pressure-sensitive member producing an electric signal quickly in response to the pressure of combustion chamber. SOLUTION: A transducer housing to be fixed to a port in a combustion chamber is provided with a metal diaphragm 34 exposed to combustion gas. Pressure of combustion gas causes displacement of the diaphragm 34 which causes local displacement of a beam member 44 supported simply. The beam 44 has one side made of a heat-resistant material on which a piezoelectric resistor element is formed through epitaxial growth and connected with a bridge circuit. Noble metal foil lead wires 50, 52 are connected with the piezoelectric resistor element forming a bridge and provided with fixing pads. The pad is welded to other noble metal toil pad formed on a ceramic substrate 42 to form a sensor assembly 40 which is fixed closely to the diaphragm 34 thus constituting a transducer.