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Old 03-29-2013, 12:36 PM   #1 (permalink)
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Exhaust turbine with electric generator

Hello people

I come from switzerland. Sorry my english is not so good.

I have a Idea, but this Idea is not new.

At the end of the muffler, we fix a exhaust turbine with a electric generator.
The generator charge a battery.

So we thus use the exhaust energy.

10-20% better efficiency?


Instead of a exhaust turbine, one could uses a little roots-charger as exhaust turbine?



cu

PowerPiston


Last edited by PowerPiston; 03-29-2013 at 12:45 PM..
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Old 03-29-2013, 12:57 PM   #2 (permalink)
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In order to get power out of the exhaust there must be a pressure/temperature drop between the two sides of the generator (be it a turbine or roots type charger). I would stick to a turbo type setup since it is designed to do what you want. A roots type charger really is not designed to take power out of something, its only designed as a compressor. I am assuming you mean a roots charger like this: Roots-type supercharger - Wikipedia, the free encyclopedia
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Old 03-29-2013, 01:26 PM   #3 (permalink)
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I know the roots-charger. A roots-charger is only a pump, and a pump can also drive a generator. A exhaust turbine is relatively expensive and not very insensitive. So my idea a roots-charger instead a exhaust turbine.
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Old 03-29-2013, 01:36 PM   #4 (permalink)
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Sorry can't post links. Next post sorry
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Old 03-29-2013, 01:37 PM   #5 (permalink)
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This engine uses also the exhaust energy.

The 5-stroke petrol engine so good as a diesel engine.
This engine uses the exhaust energy with a bigger piston.
The piston is greater than a larger force acting on the piston.

My idea is without piston, but with exhaust turbine or a exhaust-pump.
In the exhaust gases is still a lot of energy.

5-Takt-Motor - Konzept

Ilmore
Ilmor Engineering - 5-Stroke Concept Engine.
Fünftaktmotor
5-Takt-Motor

Last edited by PowerPiston; 03-29-2013 at 01:44 PM..
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Old 03-30-2013, 03:40 PM   #6 (permalink)
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Quote:
Originally Posted by PowerPiston View Post
At the end of the muffler, we fix a exhaust turbine with a electric generator.
The generator charge a battery. So we thus use the exhaust energy.
10-20% better efficiency?
Discussed >here<:
Quote:
Originally Posted by Air-Hybrid View Post
"TIGERS (Turbogenerator Integrated Gas Energy Recovery System) is a water cooled switched reluctance generator coupled to an exhaust driven turbine. It is capable of operating in exhaust temperatures > 900ºC, at speeds up to 80,000rpm, delivering a shaft power of 6kW"

Controlled Power Technologies... TIGERS

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