Dwell period control for engine ignition

Details Dwell period control for engine ignition Dwell period control for engine ignition

1982-07-15

1984-08-28

Argenbright, Tony M.

Internal-combustion engines

High tension ignition system

Having dwell control

123644, F02P 304

Patent

active

044677766

ABSTRACT:
A countdown counter (14) counts out a speed dependent number to determine the start of the dwell period when a comparison number (Z17) is reached which is adjusted dynamically by a regulation counter (17). The countdown counter's contents are reduced by a value dependent upon acceleration when acceleration is present in order to improve the dynamic correction. In the case of strong accelerations these dynamic corrections are insufficient and when such a strong acceleration occurs the regulation counter content is set to a high value to assure a succession of strong ignition sparks. The high value of acceleration necessary for this precaution may be determined by comparing the difference of successive engine speed counts with a predetermined value or it may be determined by the failure of the current in the ignition coil primary to reach some predetermined value. After the generation of strong sparks is thus assured, the comparison count value provided by the regulation counter gradually returns to normal by the operation of the provisions for normal accommodation to dynamic conditions.

REFERENCES:
patent: 4174696 (1979-11-01), Jundt et al.
patent: 4351306 (1982-09-01), Luckman et al.
patent: 4359036 (1982-11-01), Seeger et al.
patent: 4366800 (1983-01-01), Seeger et al.

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