F - Mech Eng,Light,Heat,Weapons – 02 – P
Patent
F - Mech Eng,Light,Heat,Weapons
02
P
317/5.2
F02P 9/00 (2006.01) F02P 3/08 (2006.01) F02P 13/00 (2006.01) H01F 38/12 (2006.01) F02B 75/02 (2006.01)
Patent
CA 2032488
-67- ABSTRACT OF THE DISCLOSURE A high efficiency, high output, compact ignition coil parti- cularly suited for use in capacitive discharge, multiple pulsing ignition systems, with about ten turns of primary (1) wire (Np) and about five hundred fifty turns of secondary (2) wire (Ns) for an input voltage Vp of approximately 350 volts and a peak output voltage Vs of 30 kV, the core and windings of the coil featuring separate and different primary (31) and secondary (41) core halves structured on the basis of herein developed coil open and closed circuit criteria such that the core half (31) containing the primary winding has a large center post (32) of cross-sectional area AP with a narrow clot of width Wl around the post (32) for winding the primary wire (1) to provide essentially the total required coil leakage inductance Lpe of about 50 uH for an input capacitance of about 5 uF and spark discharge frequency fcc of about 10 kHz, and the secondary core (41) structured to have a center post (42) of cross-sectional area AR about half that of AP to provide a much larger winding width W2 than W1 to efficiently support the many layered larger coil secondary winding (2) for a same overall outer core diameter D of the golf comprising a pot core or "E" type core structure.
Combustion Electromagnetics Inc.
Swabey Ogilvy Renault
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