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Bill USA

(6,436 posts)
Mon Aug 29, 2016, 08:53 PM Aug 2016

A 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, it’s 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 we’ve found waiting for us in Sweden, the world’s fastest car can still be easily controlled. Or so it seemed.

It’s 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 Koenigsegg’s 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, it’s struggling to find grip. Running on regular pump gasoline means around 1161 horsepower; 1341 horses and 1011 pound-feet come when it’s fueled with E85. But either way, that’s 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.

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... not practical for going to the store to get milk, but shows what can be done with ethanol fuel.

13 replies = new reply since forum marked as read
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A FFV not for the faint of heart: 309 cu in, 1341 hp, on E85; 0-60: 2.5 sec, top speed: 273 mph (Original Post) Bill USA Aug 2016 OP
How does it get more energy on E85? Travis_0004 Aug 2016 #1
You're on the right track. House of Roberts Aug 2016 #7
most likely the turbo-charger is controlled by a sensor that detects how much alcohol is in the fuel Bill USA Aug 2016 #10
What does FFV mean? MADem Aug 2016 #2
Flex Fuel Vehicle House of Roberts Aug 2016 #4
AHHHH.....thanks!!! MADem Aug 2016 #5
Indycar has been using E85 since the 2012 season. House of Roberts Aug 2016 #3
Well written! Wilms Aug 2016 #6
0-250mph in 20 seconds? Glamrock Aug 2016 #8
this is the first working vehicle. Economies to scale will come in as they sell some. Maybe you Bill USA Aug 2016 #11
I was willing to consider it at $2.5 Glamrock Aug 2016 #12
This car would do very well in NHRA events brush Aug 2016 #9
here's the url for 1/4 mile record holders Bill USA Aug 2016 #13
 

Travis_0004

(5,417 posts)
1. How does it get more energy on E85?
Mon Aug 29, 2016, 08:59 PM
Aug 2016

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)
7. You're on the right track.
Mon Aug 29, 2016, 09:16 PM
Aug 2016

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)
10. most likely the turbo-charger is controlled by a sensor that detects how much alcohol is in the fuel
Tue Aug 30, 2016, 05:45 PM
Aug 2016

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)
2. What does FFV mean?
Mon Aug 29, 2016, 09:07 PM
Aug 2016

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)
3. Indycar has been using E85 since the 2012 season.
Mon Aug 29, 2016, 09:08 PM
Aug 2016

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)
6. Well written!
Mon Aug 29, 2016, 09:13 PM
Aug 2016
There’s time aplenty to frame a couple of thoughts. First, and most pressingly, I wonder what will happen if we finish upside down in a car with scissor-hinged doors. Second, and more incongruously, I observe that the grounds-keeping standards have really slipped since the Swedish air force vacated this place 12 years ago. As the edge of the runway approaches, it seems to be made up more of stuff than space: bush, gap, tree, gap, bush, gap, and so on, rushing past like the repeating background in a Hanna-Barbera cartoon.


Bill USA

(6,436 posts)
11. this is the first working vehicle. Economies to scale will come in as they sell some. Maybe you
Tue Aug 30, 2016, 05:50 PM
Aug 2016

could pick one up for a mere $500,000 in a few years.

Glamrock

(11,802 posts)
12. I was willing to consider it at $2.5
Tue Aug 30, 2016, 06:07 PM
Aug 2016

$2.8 is a bit much for my pocketbook. I guess I'll just keep my Mini.

brush

(53,917 posts)
9. This car would do very well in NHRA events
Mon Aug 29, 2016, 11:31 PM
Aug 2016

Wonder what its top speed for the quarter mile is — oh wait, they don't run a full quarter mile anymore.

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