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It is a natural part of our concept to use a heat exchanger in the exhaust system in order to condense water from the exhaust, in order to use in our internal cooling system. This heat exchanger will also be able to work as a evaporator, producing steam of considerable pressure to be expanded in the cylinder in steam power strokes alternating the combustion power strokes.
So, the hot exhaust gases meet the cool plates of the heat exchanger. The water in the exhaust gas is condensed and pumped into the other side of the heat exchanger where it is brought to the boiling point to produce steam. The steam is expanded in the cylinders to produce work on the engine crankshaft. |
So, where is this different from previous attempts on exhaust heat recycling?
First, this system requires computer controllable valve actuators providing possibility to alternate normal combustion cycles with steam expansion cycles at a rate, which is not static or anywhere near static. This means that existing hardware may be used, where the friction is already "paid for". This way we need very small marginal gains to make exhaust heat recycling worthwhile. |
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Exhaust Heat Regeneration
Exhaust heat is a main energy loss in combustion engines. Many attempts have been made to try to find ways of turning some of this energy into mechanical work. So far the increased friction, cost, weight and other factors have proved it, if not impossible, at least uneconomical to regenerate exhaust heat
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