F - Mech Eng,Light,Heat,Weapons – 02 – D
Patent
F - Mech Eng,Light,Heat,Weapons
02
D
F02D 41/24 (2006.01) F02D 41/34 (2006.01) F02P 5/15 (2006.01) F02P 7/077 (2006.01) G01D 5/244 (2006.01) G01D 5/245 (2006.01) H03M 1/30 (2006.01)
Patent
CA 2109324
2109324 9320346 PCTABS00027 In one aspect of the present invention, a method determines the rotational position of a crankshaft (110) of an internal combustion engine (100). The method includes monitoring the rotation of the crankshaft (110) and responsively producing a crankshaft pulsetrain. A clock signal is produced having a predetermined frequency. The clock signal and the crankshaft pulsetrain are received. Each pulse of the crankshaft pulsetrain is sampled, and responsively the period of each sampled pulse is determined. Signals representative of the determined pulse periods are produced. The method further includes receiving the determined pulse period signals, and responsively determining a value which is predictive of a period of the next pulse to be produced. A signal representative of the predictive value is produced, and the predictive value signal is received. An intermediate position signal based on the predictive value is produced. The intermediate position signal is representative of a predetermined angular rotation of the crankshaft (110).
Caterpillar Inc.
Kirby Eades Gale Baker
LandOfFree
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