High energy adaptive ignition system

Details High energy adaptive ignition system High energy adaptive ignition system

F - Mech Eng,Light,Heat,Weapons

02

P

317/5.3

F02P 9/00 (2006.01) F02P 3/05 (2006.01)

Patent

CA 1062768

HIGH ENERGY ADAPTIVE IGNITION SYSTEM 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 feed- back 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.

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