Solid state ignition system and method for linearly regulating t

Details Solid state ignition system and method for linearly regulating t Solid state ignition system and method for linearly regulating t

1975-12-19

1977-08-23

Dority, Jr., Carroll B.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123148E, F02P 100

Patent

active

040433021

ABSTRACT:
An electronic, solid-state ignition system for an internal combustion engine is disclosed which is responsive to alternating timing signals produced in timed relationship with the engine. The electronic system comprises a plurality of integrator circuits, as transistorized output stage and a feedback loop for linearly regulating the current limit duty cycle to a fixed percentage of the firing cycle time period independent of current ramp time through the coil. A further circuit also responsive to the timing signals is included, which circuit overrides the aforementioned electronic system below a predetermined engine rpm. The overriding circuit effects a desired lead angle to the timing signals applied thereto to produce a minimum dwell angle for engine speeds below the predetermined engine rpm. As a result, sufficient spark potential is developed and predetermined spark timing is produced, with minimum power consumption in the ignition system, thereby preventing misspark even though the engine may be accelerating at a maximum specified rate or decelerating.

REFERENCES:
patent: 3867916 (1975-02-01), Bigalke
patent: 3885534 (1975-05-01), Webster
patent: 3888220 (1975-06-01), Bigalke et al.
patent: 3890944 (1975-06-01), Werner et al.
patent: 3916855 (1975-11-01), Fauser et al.
patent: 3923030 (1975-12-01), Luteran
patent: 3938490 (1976-02-01), Snyder et al.
patent: 3943896 (1976-03-01), Green et al.
patent: 3976043 (1976-08-01), Camp et al.
patent: 3989024 (1976-11-01), Lai et al.

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