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- Newsgroups: rec.autos
- Path: sparky!uunet!infonode!cherokee!greg
- From: greg@cherokee.NoSubdomain.NoDomain (Greg Moritz)
- Subject: Hydrogen & NOx's (Was: Rotary vs Pist.)
- Message-ID: <1992Nov22.000808.14684@infonode.ingr.com>
- Lines: 50
- Sender: usenet@infonode.ingr.com (Usenet Administrator)
- Reply-To: greg@cherokee.b23b.ingr.com (Greg Moritz)
- Organization: Dazix, An Intergraph Company
- Date: Sun, 22 Nov 1992 00:08:08 GMT
-
- ramiro@rrunner.NoSubdomain.NoDomain (Ramiro Reinoso) says:
-
- RR> ... I saw a display ... demonstrated that rotary engines are more
- RR> suitablefor hydrogen fuel because the combustion chamber section
- RR> was not the same as the intake chamber section. ...
-
- RR> And as far as emissions, when you burn hydrogen you end up with
- RR> water vapor (very environmentally friendly).
- ^^^^^^^^^^^
- aas7@po.CWRU.Edu (Andrew A. Spencer) responded:
-
- AS> ... with some various complications...it sounds great..but..you have
- AS> to inject water into the combustion chamber in order to keep certain
- AS> nasties like nitrogen(NOx's) mostly from also deciding to steal some
- AS> of the H's O's... it sounds realy great..but..not only would we have
- AS> to come up with tanks practicle for a car to carry H..but also tote
- AS> around water ...
-
- ... but mwp@iconix.oz.au (Michael Paddon) added:
-
- MP> The resulting water would be vapour at exhaust temperatures;
- ^^^^^ ^^^^^^
- MP> ie. no we wouldn't have to "tote" it around.
-
- ... and aas7@po.CWRU.Edu (Andrew A. Spencer) corrected:
-
- AS> you didn't read what i wrote, did you? like i said, you have to inject
- AS> water into a H powered IC motor to get H2O out, otherwise you will get
- AS> some nasty undesirable other byproducts. ...
-
- I think that there is a misconception as to where the NOx emissions come
- from. The makeup of the air around us is about 80% Nitrogen and 20%
- Oxygen (approximately). Since that N2 gets into the combustion chamber
- and is heated up, it gets to participate in the chemical reaction with
- the Gasoline, Hydrogen, Methanol, Natural Gas, or whatever you are using
- as fuel.
-
- I believe that this misconception arises from the NASA rockets that burn
- Hydrogen that is mixed with *pure* Oxygen. Those do indeed give off pure
- water vapour ( which is then dumped into the atmosphere at high
- temperature which then probably reacts with the air ... ).
-
- Do you know how the injected water prevents NOx's from forming?
- Couldn't an H2 powered car use a Cat-converter?
-