wfsiew

hi,
Good evening,

Help! help! help!
Who can help me to explain WHY & HOW does the fuel being suck from left chamber to Right chamber since the fuel pump in "right chamber" (Note: fuel tank is two chamber design- left & Right) ??

pls help to explain why & how fuel is always suck from left chamber to right chamber!!!

by,
wfsiew

wizkid

The why part is easy. The tank is a saddlebag design to go over the driveshaft. It's called making the best of use of space availible. I know the Corvette's have this type of tank as well.

The pump is in the passenger side while the hoses that connect to the fuel system come out of the top of the driver side fuel tank.

If you do a search on this in the Tech section here and visit the page below, you may learn a few more things about it.

http://www.installuniversity.com/mb/w203/w203/fp.html

rtking

Audi A4 with Quattro driveline use this design as well. I believe some of the older Jaguars had twin tanks also, but they were mounted at rear fender height. (Look for some older Jaguars with the twin fuel fill caps.) Wizkid is right - it's for packaging purposes.

Bob

wfsiew

Thanks for your info guide, but i still cannot catch up the design:-
HOW does the fuel being suck from left chamber to Right chamber since the fuel pump in "right chamber"
Hope that u can explain more cleary to me as well..

wizkid

My understanding is that it somehow siphons the fuel out of the other side via one of the hoses.

Outland

Its not just packaging...this is one of the safest positions on the car during an impact.

wizkid

Unless you are the one sitting on top of the tanks in the back seat. That is one bad enema!!

wfsiew

Hey, thank u for your reply...
can u explain how does it consider the safest positions on the car during an impact ??

i need know how does and what method it use to pull the fuel in from left chamber to right chamber everytime fuel pump operated instead of right to left chamber ??

Outland

Hardly. During a crash, because the metal here is folded(making it more rigid), and so far removed from the exposed sides of the car very little deformation of the floor pan happens. Serious impacts would also likely encounter the drive axles, which are very rigid.

Put it under the rear bumper or trunk, that is all designed to collapse in a crash to absorb the energy of the impact, and you'd have gas spraying everywhere. Its in the right spot where it is.

wfsiew

I still cannot get your answer about why does the "theory" of that fuel tank design??

Outland

I think we have encountered a language barrier.

I believe your question about how it works was already answered by Wizkid.

wizkid

As pointed out above, I answered your question about how the fuel moves from driver side to passenger then back to driver.

It siphons the fuel across through one of the hoses in the tank that goes from side to side.

wfsiew

i get what your mean
Thanks to your explainantion..

wfsiew

thanks your explaination..
By the way, may i know WHY is the fuel in "left chamber always get empty first before the right chamber, is that influenced by fuel pump since it's fuel pump in right chamber" ?