Quote:
Originally Posted by churchx
Won't sequential turbos need different shape of blades if they further accelerate/pressurise air stream vs standalone compressor, which may complicate finding off the shelf compressors, no? Also adding two blowers imho will add unnecessary complexity both to mounting and for controller for those two, rising price of development and kit itself and reducing simplicity of retrofit of such. Imho mild boost but keeping things simple would be more beneficial then aim for high boost levels of classic SCs/turbo-s.
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I agree, and that’s what I was getting at when I said I’m not sure how the ESC and turbo would interact. Conceptually it’s an interesting idea but I agree it would probably be cost/complexity prohibitive for most of the aftermarket crowd that would be interested.
I actually did some quick research and there is an electric anti lag crowd funding project on indiegogo right now but it’s only raised about $100. It’s a pretty simple system that uses an air compressor, tank, electrically operated valve, and micro controller. The concept is compressed air from the tank is released into the exhaust manifold. The compressed air then expands both due to pressure differential between the tank and the manifold, and the cool air being heated by the hot manifold(Boyle’s Law). This in turn increases the exhaust pressure spooling the turbo. They control it by tying the throttle position sensor into their controller so that when the throttle body is open more than a predefined setting it opens the valve releasing compressed air into the exhaust manifold.
https://www.indiegogo.com/projects/e...charged-cars#/
It’s a pretty slick idea and supposedly they have a working prototype. I have a few thoughts/concerns
1. How does the system know when the turbo has spoiled enough and stop supplying compressed air rather then just continuing until throttle position lowers or the tank is empty
2. Is there any risk to the hot manifold/turbine by suddenly introducing cool air
3. Where is the optimal and/or most practical place to introduce the compressed. Probably easier on an aftermarket turbo vs. a factory turbo like the one on my C30 that is integrated into the manifold. I’d probably have to weld a bung into the manifold to connect the compressed air
4. If they aren’t already I’d add a pressure regulator to get consistent air pressure and the ability to adjust pressure
5. Would introducing fresh air into the exhaust cause problems with emissions controls i.e. the O2 sensor(s). If so is there a way to manage that
I wouldn’t count on that indiegogo turning out a real product but the concept may have merit.