METHOD AND DEVICE FOR INSPECTING FUNCTION OF VESSEL, IN PARTICULAR, AUTOMOBILE TANK VENTILATION DEVICE

PROBLEM TO BE SOLVED: To improve furthermore a method and a device for detecting the function of an automobile tank ventilating device to completely prevent the emission. SOLUTION: A leakage diagnostic unit 60 with a pump 50 is mounted to diagnose the function of a tank ventilating device, and a swi...

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Bibliographic Details
Main Author STREIB MARTIN DR
Format Patent
LanguageEnglish
Published 09.01.2002
Edition7
Subjects
BLASTING
COMBUSTION ENGINES
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MEASURING
MECHANICAL ENGINEERING
PHYSICS
SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF
TESTING
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES
TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To improve furthermore a method and a device for detecting the function of an automobile tank ventilating device to completely prevent the emission. SOLUTION: A leakage diagnostic unit 60 with a pump 50 is mounted to diagnose the function of a tank ventilating device, and a switching valve 70 is mounted in front of the pump 50. A reference leakage 81 is mounted in parallel with the switching valve 70. The switching valve 70 has two switching positions I and II. The air-tightness is inspected by specifying whether the supply flow to be given to the tank ventilating device from the pump 50 is different from the supply flow existing in the application of negative pressure through the reference leakage or not, by measuring the electric current supplied to a pump motor.
Bibliography:Application Number: JP20010113596