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Shop Talk
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http://www.clubcobra.com/forums/shop-talk/)
| Hiker |
11-01-2007 07:38 PM |
What's your answer to this question??
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| Rick Parker |
11-01-2007 07:42 PM |
I would say #3
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| mr bruce |
11-01-2007 07:47 PM |
two is the answer
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| vanoochka |
11-01-2007 07:47 PM |
#5 - Because it's there.
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| Hiker |
11-01-2007 07:48 PM |
Oh...this is going to be good....
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| vettestr |
11-01-2007 07:49 PM |
# 3 describes a normally aspirated engine.
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| bmwdb10 |
11-01-2007 07:57 PM |
I agree with Mr. Bruce! #2! I think there is more vac with the down stroke and open valve than outside pres.
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| Chaplin |
11-01-2007 07:58 PM |
Quote:
Originally Posted by mr bruce
two is the answer
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That is Correct! |
| mr bruce |
11-01-2007 08:02 PM |
Go out to the garage, take off your aircleaner. Place you hand over the carb. What do you feel, NUTHIN'. Now start your engine, what do you feel, SUCTION.Piston PULLING the fuel/air charge into the cylinder.
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| computerworks |
11-01-2007 08:07 PM |
Quote:
During the intake stroke of a naturally aspirated engine, a vacuum in created. Because the pressure inside the cylinder is now lower then atmospheric pressure, air enters the cylinder and the pressure is equalized.
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Lousy wording of the answers. :MECOOL:
3. ...but I'd give the 2's a correct answer also. |
| pgermond |
11-01-2007 08:07 PM |
The #3's have superchargers!!! :cool:
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| Yetiman |
11-01-2007 08:08 PM |
I know what test this is from !
I had a lot more head scratching in the section with the pulleys.
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| vanoochka |
11-01-2007 08:17 PM |
When the piston goes down, it causes a vacuum - a volume of space in which the gaseous pressure is much less than standard atmospheric pressure. That would lead me to guess that the answer is #3 because when the valve opens the air would be pushed into the vacuum at a pressure of 14.7 lbs per square inch.
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| fasterpatrick |
11-01-2007 08:18 PM |
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| Hiker |
11-01-2007 08:20 PM |
I got a 94... 96 is the question 48 is B.....lol
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The Intake Stroke:
On the intake stroke, the intake valve has opened. The piston is moving down, and a mixture of air and vaporized fuel is being pushed by atmospheric pressure into the cylinder through the intake valve port.
I've worked with pumps for 30+ years. This is basic stuff.
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| Hiker |
11-01-2007 08:33 PM |
So when I breath and my lungs expand....atmospheris pressure is filling my lungs, or are my lungs causing a vacuum sucking air in??
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| o'brien |
11-01-2007 08:42 PM |
why would you lose h.p. at higher altitude?
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| Chaplin |
11-01-2007 08:44 PM |
less oxygen in the air.
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