Computer control of an exhaust gas recirculation device for an i

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Details

123117D, 123119A, F02M 2506, G06F 1546

Patent

active

041640322

ABSTRACT:
Disclosed herein is a computer control system of an exhaust gas recirculation device for an internal combustion engine, wherein values of the parameters of desired EGR ratios when various conditions in the engine intake system exist are preliminarily stored in the memory of the computer, and wherein a value of a parameter is read out from the memory by detecting a value of the engine condition during its operation. In the system, values of temperature correction factors with respect to at least one temperature characteristic of the engine are also preliminarily stored in the memory. A temperature correction value is read out from the memory in accordance with a detected temperature value of at least one portion of the engine. The computer calculates the amount of EGR needed from the read out values of desired EGR and temperature correction and produces an electrical signal for controlling operation of the EGR value.

REFERENCES:
patent: 3799133 (1974-03-01), Frank
patent: 3807376 (1974-04-01), Glockler et al.
patent: 3969614 (1976-07-01), Moyer et al.
patent: 4011845 (1977-03-01), Mayer et al.
patent: 4018198 (1977-04-01), Williams
patent: 4026256 (1977-05-01), Fenn
patent: 4060065 (1977-11-01), Hata et al.

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