Knock detecting apparatus for internal combustion engine

Details Knock detecting apparatus for internal combustion engine Knock detecting apparatus for internal combustion engine

1980-11-28

1982-07-06

Gill, James J.

Machine element or mechanism

Mechanical movements

Rotary to or from reciprocating or oscillating

G01L 2322

Patent

active

043376436

ABSTRACT:
A knock detecting apparatus for internal combustion engines is provided with a vibrating rod of a magnetic material having a resonance characteristic in a knock frequency hand of an engine, a free end of the vibrating rod is inserted in a round through hole of a core to form an air gap between the inner surface of the round through hole and the outer surface of the vibrating rod, and the air gas constitutes a portion of a magnetic path between the core and the free end of the vibrating rod. The vibrating rod is allowed to vibrate in more than one directions and air gaps are also formed in respective vibrating directions thereby enabling to detect vibrations due to knock in more than one directions.

REFERENCES:
patent: 4096735 (1978-06-01), Huntzinger et al.
patent: 4108006 (1978-08-01), Walter
patent: 4275586 (1981-06-01), Gast et al.

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