Reduce fuel consumption to the extreme

[Macro]

yeah, but when it's summer, air has to enter the tank for
to escape the fuel..and if this air is at 30 ° ...

a good way is to fill a can of 10 l of gasoline in the morning and weigh it and then do the same thing at night.

We are well in extreme savings.

Petroleum products actually dilate about 1 / 1000 per ° C
Their density is simply changing.

If you weigh your can in the morning and you repose in the evening and your can is closed hermetically closed it will weigh the same weight. in a petrol tank, a certain pressure is maintained above the atmospheric pressure, which is sufficient to limit evaporation to lighters. The more the gasoline quality changes between winter and summer (vapor pressure) to decrease this evaporation in summer to keep one to start the carburettor engines the winters ...

Depending on the location it may be beneficial to refuel after delivery in summer because if you are near a petroleum depot large volumes of storage allow to have a colder product than the stations; If you are ready for a refinery the product is hotter. Actually it is billed to the service station with a volume conversion to 15 ° but against the end customer it is sold without conversion of T °.

A station which is delivered 1000 liters of fuel loaded 20 ° will be invoiced (approximately) 995 liters if the product delivered was 10 ° it will be charged of (approximately) 1005 liters the conversion of density is actually an imperceptible chipoterie at the level of the final consumer.

The chosen conversion T ° of 15 ° C is the average annual T ° observed at the distribution ...

A yes for those who fill up at night ... In the summer the fuel can get out of the ground between 15 and 20 ° if you fill the tank has a cork ... there is a good chance that it can chopper a few degrees in the evening and overflowing from your tank ...

Ditto for those who have a heating oil tank in a basement for example .. delivered in the morning in winters 4 or 5 degrees when it will tend to warm up 15 it will take 10 liters for 1000 delivered ... Si the consumption of the boiler is less ... your tank will overflow ... But in general the deliverymen know it and do not fill up a raz ...

[gildas]

If you weigh your can in the morning and you repose in the evening and your can is closed hermetically closed it will weigh the same weight.

I may have expressed myself poorly do the same thing at night
that is to say refill a tin of 10l at night and weigh it.

[Macro]

In fact it will depend mainly if someone has refueled before you ...

Another thing for the small flow. It is necessary to go down below 10% of the maximum flow of the meter so that it becomes interesting (but the electronic volumes will cut you off after a few minutes) 10% ca must be at most 3 per thousand error ...

[Flytox]

in a petrol tank, a certain pressure is maintained above the atmospheric pressure, which is sufficient to limit evaporation to lighters.

Indeed for recent cars there is a valve to prevent the venting of the fuel tank when stopped. (pollution limitation) Evaporation is very limited. On older cars, it is a simple hole like 1 diameter mm on the tank cap the loss of steam when the car stays in the summer sun is not at all symbolic.

[antoinet111]

it cuts hair in 4 here ...

[Flytox]

it cuts hair in 4 here ...

The most difficult thing is that the 4 shares are equal when cut lengthwise

[Macro]

in a petrol tank, a certain pressure is maintained above the atmospheric pressure, which is sufficient to limit evaporation to lighters.

Indeed for recent cars there is a valve to prevent the venting of the fuel tank when stopped. (pollution limitation) Evaporation is very limited. On older cars, it is a simple hole like 1 diameter mm on the tank cap the loss of steam when the car stays in the summer sun is not at all symbolic.

My golf cab (imported from the US) 1985 already had a whole system of recovery and filtration of the tank gases in activated carbons that was desorbed by depression and reinjected into the engine by a set of electrovalves on engine depression. system that installed in petroleum depots in the 2000 years to recover vapors on trucks ...

For the cars of these years ... The installation of an electronic injection would be without a doubt a blessing as well as a pressure soup (without big risk on the tank) ...