Ignition system with automatic increase in ignition energy durin

Details Ignition system with automatic increase in ignition energy durin Ignition system with automatic increase in ignition energy durin

1979-03-01

1981-05-19

Argenbright, Tony M.

Internal-combustion engines

High tension ignition system

Having dwell control

123625, 123644, F02P 304

Patent

active

042678137

ABSTRACT:
When the engine accelerates, the angle over which the ignition switch is closed prior to initiating the spark is automatically increased. Acceleration of the engine is detected by a comparator which compares the value of a speed-dependent signal in sequential cycles and initiate closure of the ignition switch if a predetermined difference is exceeded between the so-compared signals at a predetermined time in the cycle. Under static or decelerating conditions, the speed-dependent signal is compared, in each cycle, to the output of an integrator circuit. The integrator circuit integrates in a first direction at a first rate up to the above-mentioned predetermined time in the cycle and in the opposite direction at a second predetermined rate for the remainder of the cycle. The average value of the integrator output signal corresponds to the engine speed. When the so-compared signals are equal, the second comparator furnishes an output signal which closes the ignition switch. The integrating rates may be varied as a function of operating parameters of the engine.

REFERENCES:
patent: Re29862 (1978-12-01), Roozenbeek et al.
patent: 3797471 (1974-03-01), Schuette
patent: 4043302 (1977-08-01), Sessions
patent: 4064859 (1977-12-01), Kashiwazaki
patent: 4106440 (1978-08-01), Lai et al.
patent: 4117819 (1978-10-01), Jarrett et al.

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