Speed control method and apparatus for automotive vehicles

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Details

123352, 180176, 180179, 36443107, B60K 3100, F02D 500

Patent

active

044518889

ABSTRACT:
A vehicle speed control method comprises the steps of calculating a time difference between a predetermined period of time corresponding with a desired speed and the actual period of time corresponding with the actual vehicle speed, calculating a time difference between the respective actual periods of time, detecting each value of the calculated time differences in its low resolution related to a predetermined low speed range when the actual period of time represents a value in the predetermined low speed range, detecting each value of the calculated time differences in its high resolution related to a predetermined high speed range when the actual period of time represents a value in the predetermined high speed range, and producing a correction signal related to one of the detected values such that an output signal is produced to actuate a control element so as to control the quantity of fuel supplied into a combustion engine.

REFERENCES:
patent: 3983954 (1976-10-01), Noddings et al.
patent: 4215760 (1980-08-01), Sakakibara
patent: 4250854 (1981-02-01), Matsui et al.
patent: 4325336 (1982-04-01), Kuno et al.
patent: 4328776 (1982-05-01), Kuno et al.

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