本帖最後由 BHP 於 2009-4-25 00:30 編輯
係隔垃圾
lunb 發表於 2009-4-24 19:31
靚仔多過有用........
DC5 發表於 2009-4-24 19:50
Really OMG...
Sorry I don't check posts all the time,
happened to miss this interesting post. =)
If you have played any larger scale engines .21+,
then you will know what it's used for.
#1 It stabilizes the pressure inside the fuel tank (i.e. regulates fuel pressure).
Have you ever noticed the difference in throttle response (fuel richness) between a full-tank car and a half-tank car?
The pressure chamber helps regulate the air pressure when the tank is full.
#2 For large-scale cars, because the exhaust pipe and fuel tank are not in the same positions,
it is easy for the air pressure(inside fuel tank) to rise/drop during left/right corners.
Routing the back-pressure line helps,
and positioning this pressure chamber at a strategic position helps minimize that pressure difference in left/right turns so the engine runs much much more stable with a stablized fuel pressure (resulting in stabilized air/fuel ratio)
For this reson, you'll see a lot of top buggy drivers route the back-pressure line in strategic ways,
and many of them have a pressure chamber installed along the pressure line.
There is no filter inside the pressure chamber,
so it's not for 隔垃圾 LOL, I laughed so hard when I saw 隔垃圾.
Some people can really be ignorant
I guess for .12 to .15 engines, the pressure difference isn't that big,
so the actual use of the pressure chamber is minimal.
When you've driven .21+, such as a .28 used in Savage for example,
then you'll feel the difference in fuel pressure under left/right turns;
You would want to eliminate that damn difference,
and the pressure chamber is a solution that helps =)
Cheers,
BigHead |