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Air mass per cylinder is low when exhaust flap open 100%

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Old Oct 13, 2024 | 06:26 AM
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Gle 400d v167 2019
Air mass per cylinder is low when exhaust flap open 100%

I random run a xentry test and got result


Air mass per cylinder is lower than the specific range when exhaust flap open 100%
I did a test for charge air system for leaktightness and it was passed.
Any idea about that? I do not know much about link between air mass flow and exhaust flap.
Thanks
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Old Oct 15, 2024 | 07:13 AM
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Gle 400d v167 2019
based on this diagram exhaust flap no1 open 100% mean not much air come back to cylinder -> low air mass.
i guess maybe a bug or test case is wrong.

Has anyone try this test and passed it?
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Old Oct 21, 2024 | 02:11 AM
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Gle 400d v167 2019
It looks like the fault test which has been removed from latest version
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Old Oct 21, 2024 | 06:43 AM
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Originally Posted by Tv1982
based on this diagram exhaust flap no1 open 100% mean not much air come back to cylinder -> low air mass.
i guess maybe a bug or test case is wrong.

Has anyone try this test and passed it?
Originally Posted by Tv1982
It looks like the fault test which has been removed from latest version
Hmmm, why did they remove it?
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Old Oct 27, 2024 | 06:40 AM
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Gle 400d v167 2019
Originally Posted by W205C43PFL
Hmmm, why did they remove it?
i have no idea but I saw the structure of that test changed in latest xentry version
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Old Oct 27, 2024 | 08:55 AM
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Originally Posted by Tv1982
i have no idea but I saw the structure of that test changed in latest xentry version
Strange they remove testing proceudres.
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