Method and device for inspecting the functionality of a crankcase ventilation system of an internal combustion engine

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United States of America Patent

PATENT NO 12055077
APP PUB NO 20210348529A1
SERIAL NO

17383722

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Abstract

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The disclosure relates to a method and a device for checking the functionality of a crankcase ventilation system of an internal combustion engine. The crankcase ventilation system includes two crankcase ventilation lines arranged between a crankcase outlet of a crankcase and an associated introduction point into an air path of the internal combustion engine, via which crankcase ventilation lines gas can be introduced from the crankcase into the air path. The method includes measuring a pressure in the crankcase, supplying the measured pressure values to a control unit, and calculating the gradient of the measured pressure. The method also includes performing a gradient check, checking whether the gradient satisfies a specified criterion, and returning to the measurement of the pressure if the gradient satisfies the specified criterion. The method also includes recording an entry in a fault memory if the gradient does not satisfy the specified criterion.

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Patent Owner(s)

Patent OwnerAddress
VITESCO TECHNOLOGIES GMBHSIEMENSSTRASSE 12 REGENSBURG 93055

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gruenbeck, Karl Kelheim, DE 5 1

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