EGR diagnostic system

Measuring and testing – Simulating operating condition – Marine

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G01M 1900

Patent

active

046711074

ABSTRACT:
A system is described for diagnosing the operation of an exhaust gas recirculation system of an internal combustion engine having a speed density fuel delivery system and having a closed loop fuel adjustment. The EGR system operation is determined by disabling the EGR system and observing the magnitude of change of the integral adjustment of the closed loop system.

REFERENCES:
patent: 4029061 (1977-06-01), Asano
patent: 4149408 (1979-04-01), Ezoe et al.
patent: 4164206 (1979-08-01), Toelle
patent: 4252098 (1981-02-01), Tomczak et al.
patent: 4548185 (1985-10-01), Pozniak
IEEE Standard Dictionary of Electrical and Electronics Terms, Third Edition, Jul. 20, 1984.
Ogata, Modern Control Engineering, Prentice-Hall Inc, 1970.

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