Ignition and fuel injection pulse generating system for odd-numb

Details Ignition and fuel injection pulse generating system for odd-numb Ignition and fuel injection pulse generating system for odd-numb

1981-11-05

1983-10-04

Lall, Parshotam S.

Internal-combustion engines

High tension ignition system

Having engine component position sensor

123650, 123414, 123612, F02P 500

Patent

active

044072589

ABSTRACT:
Ignition control pulses as well as fuel injection control pulses can be obtained from a single signal generator structure by providing two generator units (28, 29) on the structure (1) which includes a rotating shield, vane or gate element (20) to generate by magnetic, for example Hall generator elements, or optical couplers, pulses (U28, U29). The vanes are so positioned, and the rotation thereof, at half engine speed, so arranged that the pulses (U28) generated by the first generator (28) extend over the pulse gaps or intervals of the pulses (U29) from the second pulse generator (29). At least one, and for example two vanes are foreshortened, so that the pulse generated by the first signal generator (28), upon passage of the foreshortened vane (23, 26) commences only when part of the pulse gaps of the second generator (29) has already elapsed. The pulse is applied to an OR-function gate which, then, will provide the fuel injection pulses; the trailing flanks of the pulses from the first signal generator are applied to control the ignition pulses, for example through a frequency divider (43). The number of vanes (22, 23 . . . 27) is twice the number of cylinders (in the example: three).

REFERENCES:
patent: 3552367 (1971-01-01), Slitti, Jr. et al.
patent: 3916863 (1975-11-01), Hohne et al.
patent: 3989023 (1976-11-01), Flozio et al.
patent: 4250846 (1981-02-01), Menard
patent: 4373486 (1983-02-01), Nichols et al.

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