Technical Air Filter question - pipe not connected

[Riv]

Hello everyone

I hope someone can help.

At the weekend I was having a quick look under the car, trying to fix a minor problem with the front grill on the bumper and whilst I was right under the car looking to get behind the bumper, I saw a big rubber pipe hanging down, not attached to anything.

The pipe (number 7 in the attached image) should have been connected under the Air Filter box, so I re-attached it but I couldn't really get to see where the pipe went from there though.

Am concerned as to the function of this pipe and whether the fact that it's been detached that something else could have been affected/damaged?

I'm hoping that air gets through to the engine from part number 5 in the attached image and not through the pipe that was detached..

Anyway hope that all makes sense to someone and look forward to any advice/ideas.

Many thanks

Riv

PS - like a lot of people on this forum, I think the Ulysse is a really great car and everytime I look at it, I think it's pretty cool. Just get so annoyed that everything seems to fall off it!! Everyday almost I find some new clip or fastener has snapped or broken on the interior fittings!!! Aaaarrrgggghh.

 

[avionista]

Hi
From your diagram, you must have a 2.0L petrol engined Ulysse. The other end of the 'air intake pipe' (7) which you reconnected to the bottom of the air filter is open to the atmosphere (not connected to anything) and probably points towards the front of the engine bay. Part (5) is the air intake resonator which should be connected to the front of the air filter box. I would not expect any damage to have ocurred due to the air intake pipe having become detached. The engine undertray would probably prevent the ingress of water into your air filter box.

The air flow to your engine doesn't actually go directly through part (5), the resonator. The resonator's job is to dampen pressure wave harmonics resulting from reflected pulses caused by intake air coming to a sudden halt each time an engine inlet valve closes. Without a resonator, air flow though the engine would be reduced and it would produce less power.

 

[Riv]

Hi,

Thanks for that really detailed response and really appreciate it. And feel a lot happier now that I dont need to worry about it. It's back in place now anyway and I'll keep an eye on it.

Thanks again

Riv