Dual pick-up ignition system with automatic transfer between...

Details Dual pick-up ignition system with automatic transfer between... Dual pick-up ignition system with automatic transfer between...

F - Mech Eng,Light,Heat,Weapons

02

P

317/5.55

F02P 3/04 (2006.01) F02P 5/155 (2006.01)

Patent

CA 1064570

DUAL PICK-UP IGNITION SYSTEM WITH AUTOMATIC TRANSFER BETWEEN PICK-UPS ABSTRACT OF THE DISCLOSURE An ignition system for an internal combustion engine comprises a distributor containing a pair of magnetic pick-up devices each of which generates signals at a frequency representa- tive of engine speed. One pick-up is used normally during start- ing of the engine to fire the engine spark plugs and the other pick-up during running. An automatic transfer circuit is pro- vided to transfer control from the first, or start, pick-up to the second, or run, pick-up when the engine begins to run under its own power and accelerate from cranking speed. Should a condition occur indicative of a lack of signals from the run pick-up above a predetermined minimum frequency, the transfer circuit transfers control of ignition firing back to the start pick-up.

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