Combustion pressure sensor

Details Combustion pressure sensor Combustion pressure sensor

1990-03-12

1990-11-13

Raevis, Robert

Measuring and testing

Vehicle drive train

Rear end

G01M 1500

Patent

active

049693522

ABSTRACT:
This invention is an annular sensor that measures combustion chamber pressure in an internal combustion engine. The sensor is located in an engine component opening, such as a spark plug well, and is engaged with first and second walls that define the ends of the opening. The first wall is located near the combustion chamber and flexes in response to varying combustion chamber pressure. The second wall is located away from the combustion chamber and remains relatively rigid. Movement of the first wall relative to the second wall due to varying combustion chamber pressure transmits a load to the sensor. The sensor generates an output signal that corresponds to that load which may subsequently be used to control engine functions.

REFERENCES:
patent: 3939703 (1976-02-01), Heggie
patent: 4153019 (1979-05-01), Laubenstein et al.
patent: 4408483 (1983-10-01), Bollinger et al.
patent: 4491010 (1985-01-01), Brandt et al.
patent: 4524625 (1985-06-01), Takeuchi
patent: 4559821 (1985-12-01), Engeler et al.
patent: 4566316 (1986-01-01), Takeuchi
patent: 4601197 (1986-07-01), Frelund
patent: 4602506 (1986-07-01), Sawamoto et al.

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