Sensata Technologies, Inc.

Texas Instruments Corporation

Cris Ruiz Zwollo

Paulus Thomas Johannes Gennissen

Marc Gerard Johan Borgers

Huub Toneman

Robert Zwijze

Serge Groenhuijzen

Roger Appelo

Tim Tiek

Werner John Peter Kleissen

Marc Borgers

Arie-Jan Kolling

Paul Gennissen

Roger M Appelo

Arie-Jan Kölling

Appelo Appelo

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.

Pressure-measuring plug for a combustion engine

A piezoresistive pressure-measuring plug for a combustion engine for measuring a pressure. The piezoresistive pressure-measuring plug:

Piezoresistive pressure-measuring plug for a combustion engine

A sensor arrangement () for measuring a pressure and a temperature in a fluid is disclosed. The sensor arrangement () comprises a temperature sensitive electrical element () and a pressure sensing electrical element (), the temperature sensitive electrical element () and pressure sensing electrical element () are both coupled to one side of a metallic membrane structure (). The metallic membrane structure is arranged to pass on the temperature of the fluid which is at the other side of the membrane structure () to the temperature sensitive electrical element () and to pass on the pressure in the fluid to the pressure sensing electrical element (). In this way a combined pressure and temperature sensor is obtained which is applicable in vehicle air-conditioning systems working with COas refrigerant.

Sensor arrangement for measuring a pressure and a temperature in a fluid

A combined pressure and temperature transducer () particularly adapted for high temperature fluids has a sensing element assembly mounted at the tip of a tubular probe () which is arranged for placement in a fluid flow path. A sensing element () includes a pressure responsive diaphragm () closing the open end of the tubular probe and being provided with piezo-resistive gauge elements bonded to the diaphragm. Wires are bonded between the gauge elements and a first, heat resistant, printed circuit board (PCB). The first PCB, together with the piezo-resistive elements, form a Wheatstone bridge. An inner connector () mounts elongated, axial stress absorbing contacts connecting the first PCB at one end of the inner connector with a second printed circuit board (PCB) mounted at the opposite end of the inner connector physically removed from the sensing element and first PCB and away from the fluid flow path. The second PCB mounts signal conditioning and amplifying electronics. An outer connector () and housing () mounts the second PCB and provides an electrical interface with transducer.

Combined pressure and temperature transducer

Growing community of inventors

Enschede, Netherlands

Cris Ruiz Zwollo