Electricity: measuring and testing – Internal-combustion engine ignition system or device – Electronic ignition system
Patent
1982-04-12
1984-07-31
Krawczewicz, Stanley T.
Electricity: measuring and testing
Internal-combustion engine ignition system or device
Electronic ignition system
F02P 1700
Patent
active
044633157
ABSTRACT:
Disclosed herein is a CD power pack tester adapted for connection to an AC line and to a CD power pack, the CD power pack including a rectifier circuit connected to a charge capacitor and an ignition SCR which allows the charge capacitor to discharge through an engine ignition coil to effect firing of an engine spark gap. The tester comprises a power transformer including a primary winding, and a secondary charging winding having an output for simulating the voltage of an engine charge coil to charge the charge capacitor, and a secondary trigger winding for providing a trigger voltage to the ignition SCR, a tester ignition coil, a tester spark gap, and a plurality of switches connected in circuit with the power transformer, the trigger means, and the tester ignition coil, and operative for connecting the primary winding to the AC line and the secondary charging winding to the rectifier circuit to charge the charge capacitor, and for connecting the secondary trigger winding to the ignition SCR so that the ignition SCR is rendered conductive and the charge capacitor discharges through the tester ignition coil to effect firing of the tester spark gap, thereby testing operation of the CD power pack. The plurality of switches are operative to allow selectively testing different CD power packs adapted for operation with two, three, four and six cylinder engines.
Krawczewicz Stanley T.
Outboard Marine Corporation
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