Measuring and testing – Engine detonation – Combustion signal compared to reference signal varied by a...
Patent
1981-02-23
1983-08-09
Gill, James J.
Measuring and testing
Engine detonation
Combustion signal compared to reference signal varied by a...
374144, G01L 2322
Patent
active
043971768
ABSTRACT:
One or more temperature sensing elements, for example thermo couples (13, 14, 16, 17), NTC or PTC or resistance wires (18) or capillary fluid temperature sensor elements (20, 21) are located on or in the immediate vicinity of a portion of the inner wall of the combustion chamber, for example and preferably by being integrated within a head liner or facing (15, 15') of the cylinder head gasket or seal (10). The output signals, in electrical or hydraulic form are connected to an evaluation stage (E, E') which determines if the temperature within the cylinder, representative of knocking, has exceeded a predetermined level. Preferably, a speed signal (n) is derived from the engine so that the signals from the sensing elements can be strobed with respect to the time within the engine cycle during which ignition may or is intended to occur so that temperature variations due to normal engine operating strokes are eliminated from the systems output.
REFERENCES:
patent: 1902932 (1933-03-01), Zubaty
patent: 3089474 (1963-05-01), Lewis et al.
patent: 3942359 (1976-03-01), Arrigoni et al.
patent: 4265205 (1981-05-01), Garcea
Bonitz Jorg
Entenmann Robert
Knab Rochus
Rohde Siegfried
Schmidt Gunther
Gill James J.
Robert & Bosch GmbH
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