RHH 2.0 HDi throttle body!

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ThomasH
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Joined: 07 Sep 2023, 20:46

RHH 2.0 HDi throttle body!

Post by ThomasH »

I have a question, why does my 2010 C5 X7 2.0 HDI RHH 163hp have a throttle body with two flaps? but one of the flaps has a dead end, for what?? I cant understand de purpose, its like it isnt even used, the flap is very clean, like new. Its very interesting, it also has a position sensor for the flap.
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Im talking about the “like new” white flap, the hole has a dead end and its not hollow like the other one, they don’t even meet…
Im talking about the “like new” white flap, the hole has a dead end and its not hollow like the other one, they don’t even meet…
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GiveMeABreak
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Re: RHH 2.0 HDi throttle body!

Post by GiveMeABreak »

It's normal and was a change from the previous DW10BTED4 engine. Ignore it.
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Marc
ThomasH
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Re: RHH 2.0 HDi throttle body!

Post by ThomasH »

Ok? But does it have any functionality? If yes which one?
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GiveMeABreak
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Re: RHH 2.0 HDi throttle body!

Post by GiveMeABreak »

I did write something about this years ago, but can't find it now, but on the DW10C engine, the by-pass function is not active, the hot air (by-pass) flap is only activated in the event that the cold air (mixer) flap seizes.

Give me a minute and I'll get you a diagram
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Re: RHH 2.0 HDi throttle body!

Post by GiveMeABreak »

DW10CTED Doser A.png
Key:
"A" Fresh air
"B" Cooled compressed air
"C" Hot compressed air
"D" Air inlet
"E" Exhaust gas
"F" Control vacuum
"G" Electrical links

ReferenceDesignationElectrical diagram correspondence
"a"Turbocharger blades control diaphragm (With position copy sensor)1374
(1)Engine ECU1320
(2)Variable geometry turbocharger-
(3)Proportional electrovalve controlling the variable resistance turbocharger1229
(4)Air flowmeter by mass1310
(5)Air filter unit-
(6)Turbocharger air cooler-
(7)Double air mixer with position repeat sensors13A1
(8)Inlet air pressure and temperature sensor13A3
(9)Turbo air cooler by-pass control electrovalve1285
(10)Air metering unit control electrovalve1361
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ThomasH
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Re: RHH 2.0 HDi throttle body!

Post by ThomasH »

So in figure 7 it’s supposed that an air mixture is happening, right?