Pressure-sensitive ignition plug

Details Pressure-sensitive ignition plug Pressure-sensitive ignition plug

1981-08-05

1983-07-05

La Roche, Eugene

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Electric generator or piezoelectric device

315 58, 313118, H01T 1300

Patent

active

043920829

ABSTRACT:
A pressure-sensitive ignition plug capable of sensing the internal pressure of a cylinder of an internal combustion engine and transmitting accommodated signal corresponding to the internal pressure. The pressure-sensitive ignition plug has a pressure-sensitive unit having an annular form and mounted in an annular space formed between an insulator assembly embracing a central electrode and a metallic plug body which supports the insulator assembly. The pressure sensing unit has an upwardly projected signal terminal through which an amplifier unit for amplifying the signal from the pressure sensing unit is detachably connected to the latter. The amplifier unit is embedded in a rubber sheath covering the upper half part of the ignition plug or, alternatively, formed in an annular shape and accomodated by a metallic case having a central through bore, the metallic case being adapted to make a snap fit to a hexagonal portion of the plug body from the upper side of the latter.

REFERENCES:
patent: 3020763 (1962-02-01), Davis
patent: 4114068 (1978-09-01), Tylka

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