Environment & Energy
Related: About this forumA FFV not for the faint of heart: 309 cu in, 1341 hp, on E85; 0-60: 2.5 sec, top speed: 273 mph
...
Car and Driver checks out the world's fastest production car
http://www.caranddriver.com/reviews/2015-koenigsegg-one1-first-drive-review
Everything is going fine until we reach 150 mph. And then, very suddenly, its not.
Just sitting in the passenger seat of the Koenigsegg One:1 (we explain the silly name later) as it attacks a wet runway is, in terms of spiked adrenaline, somewhere between a solo sky dive and being chased by a bull while running in red pants. But as the man from the factory demonstrates, even in the sodden conditions weve found waiting for us in Sweden, the worlds fastest car can still be easily controlled. Or so it seemed.
Its been raining all day, and the One:1 is struggling to put its monstrous power onto the slick surface of the former airbase that serves as Koenigseggs test track. The engine is bellowing and the car squirming and sliding as the twin-turbocharged V-8 comes on boost. Even with the stability control switched on and working overtime, its struggling to find grip. Running on regular pump gasoline means around 1161 horsepower; 1341 horses and 1011 pound-feet come when its fueled with E85. But either way, thats vastly more twist than the rear Michelins can deliver to the soaked tarmac. Glancing across at the instrument display, I can see that the wheels only stop trying to spin as we pass 125 mph, when serious aerodynamic downforce starts to push the car into the track.
~~
~~
(more)
... not practical for going to the store to get milk, but shows what can be done with ethanol fuel.
Travis_0004
(5,417 posts)E85 has less energy per gallon, and will always get you worse fuel economy?
I guess on E85 they can inject more fuel at once??????
Its a good looking car, but my dream car is the Pagani Zonda R. Its a lot more modest at only 800 HP.
House of Roberts
(5,186 posts)The stoichiometric air fuel ratio of gasoline ranges from approximately 14.5 to 15.0 but is generally considered to be 14.7. Accordingly, the stoichiometric air fuel ratio of a mix of 85% ethanol and 15% gasoline is 9.972:1.
With modern engine management systems it's easier to build an engine that can adapt to different fuels. Once E85 became the standard fuel, engines tailored to just that one fuel spec can be even more efficient.
Bill USA
(6,436 posts)This enables the engine's control module to calculate the octane and set the turbo boost accordingly. since ethanol has a higher octane than gasoline - with E85 the combustion chamber pressure can be higher (without causing pre-ignition) - this would be accomplished with higher turbo boost.
This could be done with a normal use FFV using a turbo charger, enabling better fuel efficiency with whatever the concentration of ethanol in the fuel is.
MADem
(135,425 posts)I know it's not "Fresh Fruit and Vegetables" but I'm flummoxed beyond that.
I know you are talking about cars...!
House of Roberts
(5,186 posts)MADem
(135,425 posts)House of Roberts
(5,186 posts)USAC racing has been using alcohol fuel for decades. It burns cooler, so higher compression is used to recover the energy given up when switching from gasoline to alcohol.
I could build an engine to run one of my old cars on E85, using more compression, somewhat different cams, and larger carb jets.
Wilms
(26,795 posts)Glamrock
(11,802 posts)Holy crap man! Amazing.
$2.8 million?
Holy crap man! Insane.
Bill USA
(6,436 posts)could pick one up for a mere $500,000 in a few years.
Glamrock
(11,802 posts)$2.8 is a bit much for my pocketbook. I guess I'll just keep my Mini.
brush
(53,917 posts)Wonder what its top speed for the quarter mile is oh wait, they don't run a full quarter mile anymore.