× Die Bosch D-Jetronic war 1967 die erste Großserien elektronische Einspritzung der Welt. - Bosch's D-Jetronic was the first mass-production electronic fuel injection.

Does anyone has experience with these additions to the D-jectronic system?

  • Dion1970
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19 Sep 2021 21:00 - 20 Sep 2021 09:03 #16925
by Dion1970 Europe Lancia 2000 HF Coupe
Hello
I was wondering if any of these additions would be a good improvement:

1. fuel pulsation damper, such as the Bosch 0280161024 or -037, would this be a good addition to damp the pulsations in the fuel lines from the pump? 
2. a check-valve in the vacuum line between inlet manifold and MAP sensor: as we know the MAP can not handle any overpressure. Under normal circumstances and if everything is working right this would not occur, however suppose the engine has a backfire, then this could ruin the MAP sensor. I'm not suggesting that the root cause of a backfire should be ignored, but suppose it would occur for some reason , is an aluminium check valve a good idea / would it be effective?
Maybe someone already has experience, I would like to hear your suggestions?
Thanks and best regards
Dion
Last edit: 20 Sep 2021 09:03 by Dion1970.

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20 Sep 2021 18:34 #16928
by Dr-DJet Europe Mercedes-Benz R107 450 SL, Mercedes-Benz W111 280 SE Cabrio
Hi Dion,

a pulsation damper is a good idea. All Mercedes-Benz have one in return line. A return valve should not be necessary as I would not know how a normal engine would create over-pressure.

Viele Schraubergrüße - best regards, Dr-DJet Volker
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21 Sep 2021 09:35 #16931
by Dion1970 Europe Lancia 2000 HF Coupe
Hi Volker,
Thank you for your answer!
Would de pulsation damper be placed after the fuel pressure regulator, or before?
Regarding the overpressure, indeed not in a normal engine under normal circumstances, but only with an engine backfire there would be overpressure right? 
Dion

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21 Sep 2021 23:39 #16936
by Dr-DJet Europe Mercedes-Benz R107 450 SL, Mercedes-Benz W111 280 SE Cabrio
Hi Dion,

yes pressure damper like 0 280 161 001 should be placed after pressure regulator in return line to fuel tank. And yes a backfire from a LPG installation could create over pressure.

Viele Schraubergrüße - best regards, Dr-DJet Volker
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