US PATENT SUBCLASS 73 / 35.06
.~ Combustion signal compared to a fixed reference signal or utilizing a threshold value

Current as of: June, 1999
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73 /   HD   MEASURING AND TESTING

35.01  DF  ENGINE DETONATION (E.G., KNOCK) {4}
35.06.~ Combustion signal compared to a fixed reference signal or utilizing a threshold value

DEFINITION

Classification: 73/35.06

Combustion signal compared to a fixed reference signal or utilizing a threshold value:

(under subclass 35.01) Subject matter including a combustion signal produced by a sensing means whose characteristic changes in response to combustion and which is either (a) compared to a predetermined signal or (b) limited to that portion over a predetermined minimum value.