That's defiantly thinking out-side the square. As a primary filter I think (I really do) the turbulence might upset the MAF sensor. How about using the idea as a pre-filter, especially on cold air intakes mounted under the front guard as they're more likely to pickup crap. It would have to be driven by ram air because the motor noise would drive you insane. A whirly bird type of set-up in the beginning of the pipe could be used maybe. [Mount it next to your solar panel hot water system] That would allow the air to straighten out before it hits the main filter. The dirt could be vented through holes in the pipe. I wonder if the cyclonic effect might help suck air into the pipe. :my: It might be easier to make some sought of venturi.
A canister vacuum pushes dirt into the canister, which will then become trapped as filters in the canister prevent it from getting out. Tiny holes in the filter allow air to flow through but are small enough to trap tiny particles of dirt and dust.
The problem with these models is that the filters act as the preventing device to block dirt. These filters, however, get dirty themselves. As a bag fills up or a canister vacuum is used, the filters become too dirty to be effective. A dirty filter means that air passages become blocked, which can also cause up to 50% power reduction in the suction from the vacuum.
The way a Dyson vacuum cleaner works is different from these other vacuums, as it doesn’t depend on the filters as it cleans. The cyclone technology inside the vacuum works on the same principle as a cyclone does. The air whirls around the inside of the vacuum, like a tornado. As it does, dirt and dust that enters the vacuum cleaner are pushed outward, away from the continuing air stream. By the time the air is traveling through the filters, there is no more dirt in the air, so it never loses suction