Self-diagnosing fuel-purging system used for fuel processing sys

Details Self-diagnosing fuel-purging system used for fuel processing sys Self-diagnosing fuel-purging system used for fuel processing sys

1991-05-31

1992-05-19

Miller, Carl Stuart

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

123198D, F02N 3302, F02B 7700

Patent

active

051138344

ABSTRACT:
A self-diagnosing fuel-purging system includes a plurality of temperature sensors for detecting temperatures of an adsorbent in a fuel processing apparatus at different points. The system causes fuel previously adsorbed onto the adsorbent to be purged, and then, determines the state of the fuel adsorbed onto the adsorbent on the basis of the temperatures detected by means of the temperature sensors while fuel-purging is stopped. After the state of the fuel adsorbed onto the adsorbent becomes a predetermined state, the system determines abnormality in itself on the basis of temperature drop of the adsorbent detected by at least one of the temperature sensors while performing fuel-purging.

REFERENCES:
patent: 4598686 (1986-07-01), Lupoli
patent: 4748959 (1988-06-01), Cook
patent: 4867126 (1989-09-01), Yonekawa
patent: 4949695 (1990-08-01), Uranishi
patent: 4962744 (1990-10-01), Uranishi

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