The Fabled Trip Computer / Cash Register

Post by **Chesh740R** » 16 Aug 2004 06:28 pm

Well i'm that mate of Foggy's, and well he thought you might like to see these pics.

The instructions arent upto much but as soon as you've laid all the wiring out, it all becomes ever so clear. Very Much Volvo Logic

So i'll let you come up with some guesses on how it works and what inputs it uses. and then i'll tell you the answers.

But here's the pics. If you want me to take any other pics of it just let me know.

Post by **foggyjames** » 16 Aug 2004 09:33 pm

That's an easy one to figure out, duh! It works via a small army of magic pixies...

cheers

James

Post by **5lab** » 16 Aug 2004 11:23 pm

fuel gauge and speedo innit?

Post by **foggyjames** » 26 Aug 2004 02:48 am

You lot suck at the moment! C'mon, bit of interest....this is a SERIOUSLY rare bit of kit!

cheers

James

Post by **Wentworth Man** » 27 Sep 2004 10:14 pm

Hey Chesh,
Where did you find that? Haven't seen one of those at all. Can you drop me some scans of the instructions? I'm gueesing that apart from the pixie theory which sounds a bit like Pratchett, it would probably take inputs from the speedo (perhaps connector E) to determine distance, the fuel guage or perhaps the ECU (in or out?) to determine fuel used, a ground and a power supply?
I could be seriously tempted if you felt the need to pass it on.
Cheers
Tony
aka Wentworth Man - you know where![/list]

Post by **5lab** » 27 Sep 2004 10:27 pm

theres one in the forsale forums! it uses a sensor on the rear crankshaft, and a turbine in the fuel line

Post by **Dar** » 16 Nov 2004 03:42 pm

5lab wrote:theres one in the forsale forums! it uses a sensor on the rear crankshaft, and a turbine in the fuel line

I try to find some details, Please give me link or something about this device.

Cheers

Post by **foggyjames** » 16 Nov 2004 05:05 pm

Bad news....'tis mine now...

cheers

James

Post by **Dar** » 17 Nov 2004 12:10 am

foggyjames wrote:Bad news....'tis mine now...

cheers

James

OK.It doesn't matter ...

, have you some documentation or something about how does it operate ... some detailes, you know.

cheers

Post by **foggyjames** » 17 Nov 2004 01:19 pm

There are various pictures posted around the site - the installation guide is posted in the 'installation guides' thread, and Chesh keeps threatening to post the instruction manual...but he hasn't yet.

cheers

James

Post by **Dar** » 17 Nov 2004 03:11 pm

OK.
I try to find something about how works sensor in the fuel line. I have Volvo Diesel (;( - it's doesn't demon for speed ... he he

) and i'm interested in measure fuel ....

Maybe somebady come up against something about that in web?

Post by **5lab** » 17 Nov 2004 03:19 pm

it works with a turbine i think. i also think that the diesel may run at to high pressure to let the system run properly, but i may be wrong.

Post by **Dar** » 17 Nov 2004 03:39 pm

5lab wrote:it works with a turbine i think. i also think that the diesel may run at to high pressure to let the system run properly, but i may be wrong.

high pressure is behind injection pump but before it's not so higt. The fuel is supply and excess come back to the fuel tank. It's a easy method to measure that ... ??

Have you any suggestion ?

Post by **5lab** » 17 Nov 2004 03:54 pm

i think it can only mesure the input line, not the return line, which is why it wont work with most fuel injection systems.

Post by **foggyjames** » 17 Nov 2004 05:25 pm

This unit can accept the timing signal from an injector (that's how it works with the petrol injection engines)....but Diesels have mechanical injectors, so that wouldn't work. I think you're probably stuck, I'm afraid. The turbine system only works when you don't have a return system, as you only want to measure the fuel used, not that pumped (most will just cycle through the system).

However....if you used two turbines - one send, one return, then calculated the flow differential between them...hmm...!

cheers

James