Method for diagnosing a tank venting valve

A method for diagnosing a tank venting valve. This includes measuring a first pressure p1 in the induction pipe of an internal combustion engine; activating the tank venting valve so as to open; measuring a second pressure p2 in the induction pipe of the internal combustion engine after the opening...

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Bibliographic Details
Main Authors NUSSER UWE, SALOMON STEFAN
Format Patent
LanguageEnglish
Published 19.04.2016
Subjects
BLASTING
COMBUSTION ENGINES
CONTROLLING 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:A method for diagnosing a tank venting valve. This includes measuring a first pressure p1 in the induction pipe of an internal combustion engine; activating the tank venting valve so as to open; measuring a second pressure p2 in the induction pipe of the internal combustion engine after the opening activation of the tank venting valve; calculating a control value K by subtracting the first induction pipe pressure p1 from a second induction pipe pressure p2 and adding a correction pressure pK, which is calculated from the leakage air adaptation of an internal combustion engine; and detecting A defect of the tank venting valve, when the control value K falls below a threshold value.
Bibliography:Application Number: US201214350849