US PATENT SUBCLASS 123 / 406.58
.~.~ Having engine shaft rotational position signal generator (e.g., crank shaft, cam shaft)

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.~.~ Having engine shaft rotational position signal generator (e.g., crank shaft, cam shaft) {1}
406.59  DF  .~.~.~> Speed responsive timing control {2}

DEFINITION

Classification: 123/406.58

Having engine shaft rotational position signal generator (e.g., crank shaft, cam shaft):

(under subclass 406.12) Subject matter wherein (a) the engine includes an elongated member located in the engine block or in the cylinder head which continuously turns in the same direction about its axis during engine operation and transmits torque or motion and (b) the regulating means to vary spark ignition timing includes a transducer which generates an output signal indicative of the rotational displacement of the elongated member.

SEE OR SEARCH THIS CLASS, SUBCLASS:

612+, for an internal combustion engine high tension ignition system having an engine component position sensor.