US PATENT SUBCLASS 123 / 406.39-- .~.~.~.~.~.~ Knock signal counting

US PATENT SUBCLASS 123 / 406.39
.~.~.~.~.~.~ Knock signal counting

Current as of: June, 1999
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123 /	HD	INTERNAL-COMBUSTION ENGINES

406.11	DF	SPARK IGNITION TIMING CONTROL {5}
406.12	DF	.~ Electronic control {10}
406.19	DF	.~.~ Closed loop feedback control of spark timing {5}
406.26	DF	.~.~.~ Combustion condition responsive {4}
406.29	DF	.~.~.~.~ Engine knock responsive {4}
406.37	DF	.~.~.~.~.~ Having specific knock detecting means {3}
406.39		.~.~.~.~.~.~ Knock signal counting

DEFINITION

Classification: 123/406.39

Knock signal counting:

(under subclass 406.37) Subject matter wherein the regulating means totals the signals indicative of the unusually high force (i.e., outside of normal operating parameters) of the shock wave produced when the combustible mixture of combustible material and oxidant in the combustion chamber is detonated is measured over a predetermined interval.

(1) Note. The predetermined interval may be a period defined by a specific number of engine rotations, a particular portion of one engine rotation, or a predetermined time period.

SEE OR SEARCH CLASS

701, Data Processing: Vehicles, Navigation, and Relative Location,

111, for a digital or programmed data processing system associated with an internal combustion engine, designed to control or sense vibration, roughness, or knocking condition of the engine, where significant details of the mechanical construction of the component or subsystem within a vehicle

are not claimed.