Auto boost?

ok so i know s/c and t/c are compressed air, i was wondering what if you were to hook on a small air compressor on to the intake, and boost about 5-6 psi's when you need it. I was thinking of installing the compressor in the trunk, running lines to the intake, then a pressured type button behing the pedal so when you step on all the way for accelaration it would open up the lines that go into the intake and realese the air into the intake.,,..i just want to know if something like this is possible and if it would acutaly give you a boost,.

Auto boost?
I have thought about this too.


But I could not find a compressor that could meet the air demands on a constant basis. In order to do away with the heat associated with it I would have used a heat exchanger and a holding tank. Then used the compressed air as an injector (similar to the set on on a water driven para-jet).


Operating on the principle of fewest moving parts and least weight, I rejected the idea.


A modern engine uses an air sensor, and once the air enters the intakes the fuel is allocated for the air charge. If I pressurized the intake and all the pressure could no be used it could cause the engine to flood. I could not come up with a way to keep the system "charged" with out causing a flow restriction that would offset any perceived gain.


I am not saying that it can't work, I just decided that NOX or forced induction would be easier as all the parts already exist and come in easy to install packages.
Reply:i thought about this at one stage, but it needs to be pressurized, ie you cant just stick the line into the intake system because it will just blow straight back out. thats why with turbo/supercharger it is actually a part of the intake. ie filter/duct/turbo/duct/engine.


i'm not saying it cant be done i just found i wasn't able to. you may well succeed.


good luck
Reply:What the guy above me said it exactly right! I just want to add that the weight of the compressor will prob take most of your gains out of the car. Not to mention it would take a fairly big compressor to keep a constant 5-6 psi! I cant imagine what your air/fuel ratios will be like or trying to tune a car jumping around on differnt boost levels!
Reply:its possible but unreliable. basically, you are trying to create a low cost turbo. that is your plan. here are a few things to know:





1) the compressed air will be hot, as air heats when it is compressed. you will need a way to cool it down or else it will either overheat your engine or ruiiinnn your gas mileage(that is why they use intercoolers on turbos)


2) a turbine(turbo) is much more efficient that having an air compressor. it stays in the engine bay, so it does not take trunk space. it does not need to store air (does not use your cars power), and keeps air cooler than your idea.


3) a turbo kicks in at a certain RPM, so you would not need to floor it to get it to work.


4) you can adjust a turbo's PSI to exactly what you want, and have a guage that tells you how much "boost" you are getting.








a turbo kit is more expensive, but much more reliable