Ignition system for internal combustion engines with tapped igni

Details Ignition system for internal combustion engines with tapped igni Ignition system for internal combustion engines with tapped igni

1976-07-09

1978-10-03

Feinberg, Samuel

Internal-combustion engines

Igniters

Incandescent

F02P 302

Patent

active

041178181

ABSTRACT:
The primary of the ignition coil is tapped to provide two partial primary portions which are serially connected; during an initial current flow, only one partial portion has current flowing therethrough, the other partial portion being short-circuited. When the current through the coil has risen to a predetermined level, as sensed by current flow through a sensing resistor, the short circuit across the second partial portion is removed so that current can continue to flow through the entire primary, causing a substantial drop in current level but maintaining the stored inductive energy. Current can thus rise rapidly initially, so that the coil will store sufficient energy to initiate sparking at high speeds of the connected internal combustion engine while, at low speeds thereof, the overall current flow through the coil is decreased.

REFERENCES:
patent: 3291110 (1966-12-01), Peters
patent: 3293492 (1966-12-01), Wald
patent: 3877453 (1975-04-01), Brungsberg
patent: 3892219 (1975-07-01), Preiser et al.

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