Thread: High efficiency ICE (exhaust heat recovery)
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Old 06-25-2010, 03:26 AM   #19 (permalink)
Piwoslaw
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Location: Warsaw, Poland
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Svietlana II - '13 Peugeot 308SW e-HDI 6sp
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Quote:
Originally Posted by mpgx2 View Post
Also, water boils at lower temperatures if it is in a vacuum.

Boiling Tempetrature of Water in Vacuum -* Engineers Edge

In my vehicle I get a vacuum of 10-20Hg on the vacuum
gauge on the manifold which suggests the water only needs
158-194F to boil.
But the pressure in the cylinder where water gets injected will be far from a vacuum. Is it possible that at that high pressure the temperature will be too low for water to instantly vaporize?

BTW: Here's a similar exhaust-utilizing engine (without the water injection) prototype:
5 stroke engine could increase FE by 5%-20%
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[Old] Piwoslaw's Peugeot 307sw modding thread
Last edited by Piwoslaw; 06-25-2010 at 03:36 AM..
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