Eco-marathon

Tips, advice and tips to lower your consumption, processes or inventions as unconventional engines: the Stirling engine, for example. Patents improving combustion: water injection plasma treatment, ionization of the fuel or oxidizer.
Factor
I learn econologic
I learn econologic
posts: 11
Registration: 15/01/06, 12:27

Eco-marathon




by Factor » 24/09/06, 16:00

Hello!

This year, I have the chance to be able to follow the evolution of the leveling and improvement of high-tech machines ... The cars of the Shelle eco-marathon of the IUT of Valenciennes. I will certainly next year actively participate in the improvements and the competition. These cars can travel more than 1000Km with 1 liter of gasoline (diesel from the Valencian iut and arrived 1st in 2006 :P )
We can understand that these performances are achieved for the simple reason that the engine is never turned on (well almost) so I wanted to ask your opinion to all of you to know the advantages and disadvantages of driving an ordinary car, on !!!) with the same philosophy as these little marvel, that is to say, on for accelerated and off on all slopes. Does the engine consume more at re-ignition (I restart by disengaging with the upper gear engaged to avoid the acouts) ... I travel 3 / 4km on the 16 daily with the engine off, (the dream will be to cut off at red lights and to relaunch with a small additional electric motor but ..... we can always dream)

Thank you all and have a nice day
0 x
it is a small step for the man a big step for the ecology ...
User avatar
elephant
Econologue expert
Econologue expert
posts: 6646
Registration: 28/07/06, 21:25
Location: Charleroi, center of the world ....
x 7




by elephant » 24/09/06, 16:28

Welcome to a specialist at the cutting edge of progress!

you just said

I will certainly next year actively participate in the improvements and the competition
.

Does that mean that you are allowed to pedal ??? : Cheesy:

Okay, kidding aside, I sometimes coast (sorry, I'm switching to inertio-gravitational mode, however without stopping the engine) on the descents of the E411 between Namur and Arlon. It seems strongly discouraged *. Well that said, well controlled as in the Prius or in the Honda with a computer to supervise the bazaar, it should be able to be done.

* there are several reasons that make this maneuver dangerous:

1) delay when you have to get out of a difficult situation
2) change in the handling characteristics of the vehicle: if it is a front-wheel drive, it no longer "tows" and could end up spinning
3) and if, in addition, you stop the engine on a car with power steering .....
0 x
elephant Supreme Honorary éconologue PCQ ..... I'm too cautious, not rich enough and too lazy to really save the CO2! http://www.caroloo.be
Targol
Econologue expert
Econologue expert
posts: 1897
Registration: 04/05/06, 16:49
Location: Bordeaux region
x 2




by Targol » 24/09/06, 19:58

elephant wrote:3) and if, in addition, you stop the engine on a car with power steering .....


steering is one thing, but even on a car where the steering is not power assisted the BRAKES STILL ARE.
So, more motor = a super hard pedal and impossible to brake unless you weigh 300Kg !!!
0 x
"Anyone who believes that exponential growth can continue indefinitely in a finite world is a fool, or an economist." KEBoulding
Christine
Grand Econologue
Grand Econologue
posts: 1144
Registration: 09/08/04, 22:53
Location: In Belgium, once
x 1




by Christine » 24/09/06, 20:50

Targol wrote:So, more motor = a super hard pedal and impossible to brake unless you weigh 300Kg !!!


I confirm: it happened to me a few years ago with an antique super5 and it's not cool.
0 x
Christophe
Moderator
Moderator
posts: 79117
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10972




by Christophe » 24/09/06, 20:58

pffff

Long live the motorbike :D

Image
0 x
jlvx
I learn econologic
I learn econologic
posts: 43
Registration: 13/05/06, 19:01




by jlvx » 24/09/06, 21:06

engine off surely not : Evil: , although Citroën's "stop and start" is a good solution ... at red lights.
"Free" wheel certainly not : Evil: , as explained or experienced above.
On the other hand, let go at an engaged gear, as long as the profile of the road allows it, yes :P , because we take back "control" very quickly, without too much risk and saving fuel (tested for you, I have some nice little slopes around the house)
Good accod in the climbs it does not work! : Mrgreen:
0 x
User avatar
delnoram
Moderator
Moderator
posts: 1322
Registration: 27/08/05, 22:14
Location: Mâcon-Tournus
x 2




by delnoram » 24/09/06, 21:23

jlvx wrote:engine off surely not : Evil: , although Citroën's "stop and start" is a good solution ... at red lights.
"Free" wheel certainly not : Evil: , as explained or experienced above.
On the other hand, let go at an engaged gear, as long as the profile of the road allows it, yes :P , because we take back "control" very quickly, without too much risk and saving fuel (tested for you, I have some nice little slopes around the house)
Good accod in the climbs it does not work! : Mrgreen:

If if going uphill it also works ................ for 20 meters just before reaching a stop sign : Cheesy:
0 x
"Thinking should not it be taught in school rather than to make learning by heart the facts that are not all proven?"
"It's not because they are likely to be wrong they are right!" (Coluche)

Back to "Special motors, patents, fuel consumption reduction"

Who is online ?

Users browsing this forum : No registered users and 249 guests