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AssigneeDana Corporation
InventorsFrank W. Popielas, Howard M. Robins, Jeffery A. Foster, James S. Pietraski, Lawrence E. Peck, James T. Mikos
Estimating the term…
Sensor apparatus for a multiple layer steel (MLS) cylinder head gasket measures combustion pressures for detecting engine conditions. A membrane is positioned at one end of an elongated metal tube, and the membrane end of the tube engages a cylinder bore boundary. A fiber optical sensor apparatus is fixed within the tube, and communicates with cyclic combustion events via the membrane. In one disclosed embodiment, optical wires from sensor apparatus situated at each engine bore are bundled into a common groove machined into an extended spacer layer radially outwardly of the conventional boundary of the gasket. The tube protects the sensor apparatus from damage of sealing stress on the gasket, and particularly at the bore perimeter. Each tube lies in a separate groove in the spacer layer that terminates at the bore boundary. A converter changes optical signals received from the apparatus into electrical signals for transmittal to a controller.
A combustion pressure sensor in a cylinder head gasket adapted for use in an internal combustion engine, the gasket defining at least one combustion cylinder bore aperture, the sensor adapted for placement at a boundary of the bore aperture;
A combustion pressure sensor and gasket adapted for use in an internal combustion engine, the gasket defining at least one combustion cylinder bore aperture, the sensor adapted for placement at a boundary of the bore aperture;
A combustion pressure sensor and gasket adapted for use in an internal conbustion engine, the gasket defining at least one combustion cylinder bore bore aperture, the sensor adapted for placement at a boundry of the bore aperture;
A combustion pressure sensor in a cylinder head gasket adapted for use in an internal combustion engine, the gasket defining at least one combustion cylinder bore aperture, the sensor adapted for placement at a boundary of the bore aperture;
Dependencies are inferred from the claim text.