Rock, or Hard Place?

8 posts / 0 new
Last post
ArcticFox
ArcticFox's picture
Offline
Last seen: 15 years 3 weeks ago
Joined: Tuesday, June 12, 2007 - 14:08
Points: 1091
Rock, or Hard Place?

If I fill up the tank in my car, the car weighs more and it takes more gas to move it.

If I keep the tank near empty, the car is lighter, but the rate of fuel evaporation in the tank increases.

Comments?

chas_stevenson
chas_stevenson's picture
Offline
Last seen: 12 years 6 months ago
Joined: Wednesday, December 6, 2006 - 17:14
Points: 1309
Re: Rock, or Hard Place?

IbeRKT
Offline
Last seen: 6 years 2 months ago
Joined: Thursday, November 8, 2007 - 08:40
Points: 50
Re: Rock, or Hard Place?

Just get rid of the gas engine all together and convert it to all electric and you won't have that problem!

LinkOfHyrule
LinkOfHyrule's picture
Offline
Last seen: 14 years 9 months ago
Joined: Wednesday, October 17, 2007 - 14:54
Points: 730
Re: Rock, or Hard Place?

Don't complain.

//content.answers.com/main/content/wp/en-commons/thumb/c/c4/300px-Space_Shuttle_Columbia_launching.jpg)

Something like 3,500,000lbs of liquid fuel to launch just 50,000lbs of payload.

The author of this post isn't responsible for any injury, disability or dismemberment, death, financial loss, illness, addiction, hereditary disease, or any other undesirable consequence or general misfortune resulting from use of the "information" contai

MarshallMiller
Offline
Last seen: 15 years 11 months ago
Joined: Thursday, January 3, 2008 - 21:29
Points: 14
Re: Rock, or Hard Place?

Newer vehicles have a internal bladder nearly eliminating gas vapors in the tank.

huntercook
Offline
Last seen: 16 years 1 month ago
Joined: Monday, February 18, 2008 - 08:48
Points: 8
Re: Rock, or Hard Place?

Hrm...I've got an internal bladder...but I still seem to have a problem with those gas vapors...perhaps it's my diet.

Frxdy
Offline
Last seen: 16 years 2 weeks ago
Joined: Thursday, January 3, 2008 - 17:39
Points: 20
Re: Rock, or Hard Place?

Unless it's an old old car you lose nothing to evaporation. All newer cars have sealed tanks. In my state (Maine) Part of getting an inspection sticker is a test to confirm the tank is tight with the cap on. My new Honda throws an idiot light if the gas cap is loose.

I do not know how air get's into the tank as gas is used.... but it must!

spinningmagnets
Offline
Last seen: 1 year 2 months ago
Joined: Wednesday, December 12, 2007 - 20:48
Points: 295
Re: Rock, or Hard Place?

I believe that most cars have the fuel tank "breathe" through a charcoal cannister. The charcoal acts like a sponge and captures vapors that are emitted by the fuel warming in the sun, and the warming fuel expanding, which pushes tank air out.

Then, when the engine is running, the intake draws a trickle of air through the cannister to burn up the vapors and "empty" it.

My 2000 Nissan threw a "check engine" code until I replaced a fuel cap that had been lost for a few days.

Don't worry about fuel loss due to evaporation, its very tiny. But, if you want to obsess about something, fuel is about 8 pounds per gallon, so carrying 8 gallons instead of 16 will save you 54-ish pounds of dead weight.

Air up your tires, accelerate and de-cel gently, and travel at about 5 MPH under the speed limit to reduce air resistance. Double the speed is about 4 times the resistance. Use synthetic oil.

Log in or register to post comments

Buy Ecotric bikes, get free accessories!


Who's online

There are currently 0 users online.

Who's new

  • Juli76
  • xovacharging
  • stuuno
  • marce002
  • Heiwarsot

Support V is for Voltage