US PATENT SUBCLASS 123 / 406.65
.~.~.~.~.~.~ With microprocessor

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}
406.58  DF  .~.~ Having engine shaft rotational position signal generator (e.g., crank shaft, cam shaft) {1}
406.59  DF  .~.~.~ Speed responsive timing control {2}
406.6  DF  .~.~.~.~ Having counter or addressable memory (e.g., digital timing circuit) {2}
406.64  DF  .~.~.~.~.~ Memory addressed by engine speed or load {1}
406.65.~.~.~.~.~.~ With microprocessor

DEFINITION

Classification: 123/406.65

With microprocessor:

(under subclass 406.64) Subject matter wherein the regulating means for varying spark ignition timing includes an integrated computer circuit that performs all of the functions of a central processing unit for retrieving information from the information storage section according to a prestored program to either generate or change an output signal in response to a variation in an input signal, the input signal being indicative of the rate of rotation of the elongated member in the engine block.

SEE OR SEARCH CLASS

701, Data Processing: Vehicles, Navigation, and Relative

Location,

101+, for a data processing system associated with an internal-combustion engine, where significant details of the mechanical construction of the component or subsystem within a vehicle are not claimed, especially subclass 115 for a digital or programmed data processing which includes specific structure to function either as data storage or as an information interconnecting device, where significant details of the mechanical construction of the component or subsystem within a vehicle are not claimed.