Knock sensing apparatus

Details Knock sensing apparatus Knock sensing apparatus

1991-03-29

1993-07-27

Chapman, John E.

Measuring and testing

Engine detonation

Combustion signal compared to reference signal varied by a...

G01L 2322

Patent

active

052302385

ABSTRACT:
The knock sensing apparatus comprises a metallic head gasket having a high vibration transmissibility and tightly sandwiched between a cylinder block and a cylinder head, a knock sensor fixed to the metallic head gasket, and a knock detecting circuit. Therefore, vibration of the cylinder block can be more effectively transmitted from each of plural combustion chambers of a multicylinder engine to the knock sensor via the metallic head gasket, at almost the same vibration level, and preferably in the form of longitudinal vibration waves therethrough, as compared with when knock vibration is transmitted through the cylinder block made of material with low vibration transmissibility.

REFERENCES:
patent: 3151258 (1964-09-01), Sonderegger et al.
patent: 4382377 (1983-05-01), Kleinschmidt et al.
patent: 4397176 (1983-08-01), Rohde et al.
patent: 4517945 (1985-05-01), Ishigami et al.
patent: 4660409 (1987-04-01), Miyata et al.
patent: 4686861 (1987-08-01), Morii
patent: 4903646 (1990-02-01), Minagawa et al.

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