Apparatus for the controlled feeding of volatile fuel components

Internal-combustion engines – Charge forming device – Having fuel vapor recovery and storage system

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Details

123198D, 123494, F02M 3302

Patent

active

052208974

ABSTRACT:
A line (3) provided between the head space (11) of the fuel tank (10) and the induction tube (1) of the engine contains an absorption element (9) and can be shut off by a signal-actuated servo valve (8) connected to the outlet from the absorption element. The line (3) is provided with a first sensor (4) preceding the absorption element (9) and detecting gas flows. A vacuum actuator (12) following the servo valve (8) is provided with a second sensor (13) which gives a signal when actuated. The first sensor (4) and the second sensor (13) are connected for carrying signals to a diagnosis block (14) which compares them with the signal (17) actuating the servo valve (8) and uses them for fault diagnosis.

REFERENCES:
patent: 4748959 (1988-06-01), Cook
patent: 4862856 (1989-09-01), Yokoe
patent: 4886026 (1986-12-01), Cook
patent: 4901702 (1990-02-01), Beicht
patent: 4949695 (1990-08-01), Uranishi
patent: 4953514 (1990-09-01), Beicht
patent: 4962744 (1990-10-01), Uranishi
patent: 5054454 (1991-10-01), Hamburg
patent: 5080078 (1992-01-01), Hamburg

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