Apparatus for detecting pressure in cylinder of internal combust

Details Apparatus for detecting pressure in cylinder of internal combust Apparatus for detecting pressure in cylinder of internal combust

1990-03-29

1991-11-05

Raevis, Robert

Measuring and testing

Vehicle drive train

Rear end

G01M 1500

Patent

active

050622943

ABSTRACT:
An apparatus for detecting the pressure in a cylinder of an internal combustion engine is disclosed which includes a piezoelectric pressure sensor and a current input circuit. The sensor detects the pressure in the cylinder. A current input circuit receives the output signal of the sensor in the form of a current and generates an output corresponding to the value of the current in the form of a voltage or current.

REFERENCES:
patent: 4192005 (1980-03-01), Kurtz
patent: 4567751 (1986-02-01), Ootsuka et al.
patent: 4612895 (1986-09-01), Kuroiwa et al.
patent: 4750103 (1988-06-01), Abo et al.
patent: 4821194 (1989-04-01), Kawamura
Dubendorfer et al., "State-of-the-Art Pressure Measurements in Combustion Engines", ISA Transactions, vol. 24, No. 2, 1985.
"Ladungsverstartker fur Piezoelektrische Aufnehmer mit MOS-Transistoreingang", by Dipl.-Ing. E. Nier, 1971.

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