METHOD OF CONTROLLING ENERGIZING TIME OF IGNITION COIL

Title:

METHOD OF CONTROLLING ENERGIZING TIME OF IGNITION COIL

Document Type and Number:

Japanese Patent JPS5623564

Kind Code:

A

Abstract:

PURPOSE: To prevent oscillation in a control loop, by effecting compensation for the difference between a constant current time command and a preceding measured value to calculate a present energizing time and taking preference of the insurance of a deenergizing time for an ignition arc time.

CONSTITUTION: A constant current time command Te is calculated on the basis of information on the temperature of an igniter, the voltage of a battery, etc. The command is then compared with the measured value Ta of preceding constant current time by a comparison routine 33. A quantity Th of compensation for the energizing time of an ignition coil is calculated by a compensation quantity calculating routine 34. Compensation is effected for a preceding energizing time by a comparison routine 36 to determine a constant current time command TO. Calculation is effected by a deenergizing time assuring routine 37 to insure an ignition arc time. The computation of present energizing time is thus completed.

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Inventors:

SHIRASAKI SHINJI
YAMADA TAKU
SHIMAMOTO MAMORU

Application Number:

JP9941279A

Publication Date:

March 05, 1981

Filing Date:

August 06, 1979

Export Citation:

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Assignee:

NIPPON DENSO CO

International Classes:

F02P3/045; (IPC1-7): F02P3/04

Domestic Patent References:

JPS5372939A	1978-06-28
JPS5390532A	1978-08-09
JPS53127941A	1978-11-08

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