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im still lost. the physical limit is that the air is still atmo pressure levels of air. moving at 500kmph or 200kph doesnt change the physical mass of the air, i dont see how the density of the air can physically be compressed.
Am I wrong that the speed of the car can aid in compression of the air going into the cylinder?
Hold on
I think we're arguing the same point here.
Ive been saying they have similar operation from the start.
They share too many similarities and from the code one backs up the other.
Quote:
Originally Posted by tinkerbell
Pornstar,
colder air, holds less volume than warmer air. This contributes to Volumetric efficiency as well as other factors such as, port flow efficiency & cam design.
i dotn see why a baro sensor would see kpa when seea level is the lowest level and thus anything lower is physically impossible.
the air at higher altitude would see less desnity, and ie less PW per cycle of injector. but the map sesnor can do this. why would the baro do this? >.< stupid late nite drinking owns my brain
Tinker
disconnect your MAP sensor and tell me if the bitch still idles!
There's your proof right there!
yer i know the density argument, but the colder air that an NA car draws into the chamber is still the same temp as ambient air outside. Therefore if we define VE as to be 100% filled cylinders, it is 100% filled but filled with 100% colder air, the reason for boost being above 100% VE is that the physical volume of the air in the cylinders equates to more than 100% of the chambers capacity compared to ambient outside.
unless u have a different definition of VE? or that im wrong that the cars speed does not affect the airs compression into the chamber!
I agree with you entirely, cam overlap causes a "suck" in the piston chamber which will allow you to fill the cylinders.
this whole thread has been a pissing comp on who has the best information.
it is highly likely that we will all be arguing about very similar concepts, if not from slightly different perspectives on the same issue...
hence the appearance that we are arguing when we are really thrashing out the info we have to develop a combined stance on the controversial issues.
poor pornstar is caught in the middle trying to grasp what we (or maybe just me) are still ourselves trying to comprehend and convey to the world...
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pornstar the BARO and MAP *see* things opposite, that is why the MAP is called an ABSOLUTE sensor, it tries to see vacuum as a positive rationale to make it a useful input to the MAP/RPM table
proof that there is no 'back-up' for it? proof of what?Quote:
Originally Posted by ProECU
are you saying disconnect from the ECU or from the vacuum reference? i guess it will die if you disconnect from the ecu...
it is a very important sensor in the who engines operation isn't it!
I dont see this as a pissing comp at all. Im actaully enjoying thinking through all the arguments. In fact this thread was about how the same thing can be described by differeent people as different things.
the baro reads below 100kpa in absolute value, in traditional values, its feet of mercury. essentially tho, its reading below sea level pressures of ambient air. The map sensor can do this, just different expression, i guess the map can account for temps whilst the baro cannot.