High energy adaptive ignition system

Details High energy adaptive ignition system High energy adaptive ignition system

1975-08-28

1977-02-22

Husar, C. J.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123148E, F02P 100

Patent

active

040086984

ABSTRACT:
An improved ignition system uses feedback techniques to maintain a constant high energy ignition spark level over the normal range of engine RPM. The feedback automatically compensates for environmental and aging effects such as increased ignition coil resistance and decreased battery voltage.
A voltage controlled monostable multivibrator produces pulses determining the "on" time of an electronic switch which is in series with the coil. Current through the coil is sensed by a generator which feeds back an appropriate signal to control the monostable whereby a constant dwell time is maintained. At very high engine RPM a second feedback source servo-controls the system to a constant dwell angle condition. A constant dwell angle is also established at cranking speeds by a second pulse generator in parallel with the first.

REFERENCES:
patent: 3377998 (1968-04-01), Adams et al.
patent: 3575154 (1971-04-01), Taylor
patent: 3605713 (1971-04-01), LeMasters
patent: 3916855 (1975-11-01), Fauser et al.
patent: 3938490 (1976-02-01), Snyder et al.

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